Abstract

The present invention relates to a process for producing a scalenohedral PCC product, to a scalenohedral PCC product obtainable by the inventive process as well as to the use of the inventive scalenohedral PCC product in polymer applications, paper coating applications, paper making, paints, coatings, sealants, adhesives, feed, pharmaceuticals, concrete, cement, cosmetics, water treatment, engineered wood applications, plasterboard applications, packaging applications, catalysis, gas treatment applications and/or agricultural applications.

IPC Classes  ?

• C01F 11/18 - Carbonates
• D21H 17/67 - Water-insoluble compounds, e.g. fillers or pigments
• D21H 19/38 - Coatings with pigments characterised by the pigments

Goods & Services

Chemical substances, chemical materials and chemical preparations, and natural elements (chemicals) for industrial use; industrial chemicals; salts for industrial purposes; fertilisers, and chemicals for use in agriculture, horticulture and forestry; salts [fertilisers]; potassium chloride; potassium chloride fertilizer; potassium sulphate; potassium sulphate fertilizer; potassium salts, other than for medical purposes; lime chloride; sodium chloride; ammonia; phosphorus; phosphates; calcium phosphates; ammonium phosphate; ammonium salts; ammonium sulphate; aluminium salts; aluminium hydrate; aluminium chloride; aluminium sulphate; rare earth metals; iron salts; iron hydroxide; iron chloride; ferrous sulphate; alkaline metals; agglutinants for plaster; fly ash for general manufacturing use; fertilisers. Recycling services; recycling of waste; treatment of waste and garbage; reclamation (recycling) of material from waste; treatment [reclamation] of material from waste; treatment of material from waste; treatment [reclamation] of material from hazardous products; treatment of ashes; recycling of minerals; recycling of metals; recycling of valuable materials; information, advice and consultancy services relating to the recycling of waste and trash; extraction of elements contained in waste residues; extraction of minerals contained in waste residues; treatment of liquids, namely extraction of salts from liquids; treatment of liquids, namely extraction of calcium chloride from liquids; treatment of liquids, namely extraction of potassium chloride from liquids; treatment of liquids, namely extraction of sodium chloride from liquids; treatment of liquids, namely extraction of ammonia from liquids; water purification. Scientific and technological services and research and design relating thereto; industrial analysis and research services; research relating to mineral resources; research relating to raw materials; research relating to raw material sources; research relating to waste; technical consultancy in the field of environmental science and environmental engineering.

Abstract

A method for production of pure phosphates comprises providing (S10) of a strip solution being an aqueous solution of one of monoammonium phosphate and monopotassium phosphate, loaded with stripped phosphate from a feed liquid comprising phosphoric acid contaminated by heavy metals and iron A base is added (S20) into the separated strip solution raising the pH to 2 – 5.5, forming of a heated solution and causing compounds comprising iron and phosphate to precipitate. A precipitant, precipitating heavy metals, is added (S30). Precipitated compounds comprising iron and phosphate and precipitated heavy metal compounds are separated (S40). The heated filtered solution is thereafter cooled off (S50) into a cooled solution, causing precipitation of phosphate compounds. The precipitated phosphate compounds are removed (S60) from the cooled solution. The cooled solution is recirculated (S70) for use as input strip solution in the stripping operation. A system for production of pure phosphates is also disclosed.

IPC Classes  ?

• C01B 25/46 - Preparation involving solvent-solvent extraction
• C01B 25/22 - Preparation by reacting phosphate containing material with an acid, e.g. wet process
• C01B 25/238 - Cationic impurities
• C01B 25/28 - Ammonium phosphates
• C01B 25/30 - Alkali metal phosphates
• C02F 11/00 - Treatment of sludgeDevices therefor
• C05B 11/12 - Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using aqueous hydrochloric acid

Abstract

A method for chemical processing of sewage sludge ash comprises dissolving a start material, emanating from sewage sludge ash, in an acid comprising hydrochloric acid. The start material comprising at least silicon and iron compounds. Undissolved residues are separated, whereby a leachate remains. The amount of colloidal silica in the dissolved sewage sludge ash is controlled. At least one of iron and phosphorus is extracted from the leachate by liquid-liquid extraction with an organic solvent. At least a part of a raffinate at least partly depleted in at least one of iron and phosphorus originating from the step of extracting at least one of iron and phosphorus is recirculated for dissolving the start material, emanating from sewage sludge ash. The recirculated part of the raffinate at least partly depleted in at least one of iron and phosphorus comprises chloride ions.

IPC Classes  ?

• C22B 3/26 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
• C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
• C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof

Abstract

A method for recovery of commercial substances from apatite mineral comprises dissolving of apatite mineral in an acid comprising hydrochloride. The dissolution gives a first liquid solution comprising phosphate, calcium and chloride ions. The first liquid solution is treated into a second liquid solution comprising calcium and chloride ions. This treatment in turn comprises extracting of a major part of the phosphate ions with an organic solvent. A bleed solution is removed from the second solution. Solid gypsum comprising at least 70% in a di-hydrate crystal form is precipitated from the second solution. This precipitation of solid gypsum comprises adding the second solution and sulfuric acid simultaneously into a continuous-stirred reactor in the presence of gypsum crystals. Thereby, the precipitation of solid gypsum gives a third liquid solution comprising hydrochloride. An arrangement for recovery of commercial substances from apatite mineral is also presented.

IPC Classes  ?

• C01F 11/46 - Sulfates
• C01B 25/26 - Phosphates

Abstract

A method for processing of phosphate compounds comprises providing (S10) of a primary liquid being an acid solution comprising at least phosphorous. Phosphate compounds comprising iron are precipitated (S20) from the primary liquid by adding (S22) a first additive material to the primary liquid. The first additive material comprises iron hydroxide and a solid filter-aid material. First solid matter, comprising the precipitated phosphate compounds and the solid filter-aid material is separated (S28) by a first filtering. The separated first solid matter is exposed (S30) for an alkaline solution, causing a dissolution (S32) of phosphate compounds and precipitation (S32) of iron hydroxide, which gives a secondary liquid. Second solid matter comprising the precipitated iron hydroxide and the solid filter-aid material is removed (S38) by a second filtering. Part of the second solid matter is recycled (S40) as the first additive material. A system for processing of phosphate compounds is also disclosed.

IPC Classes  ?

• C01B 25/30 - Alkali metal phosphates
• B01D 37/02 - Precoating the filtering elements or materialAddition of filter aids to the liquid being filtered
• C01B 25/22 - Preparation by reacting phosphate containing material with an acid, e.g. wet process
• C02F 11/00 - Treatment of sludgeDevices therefor
• B01J 20/14 - Diatomaceous earth

Goods & Services

Cleaning, inspection and repair, in relation to the following goods: cisterns, oil tanks, and chemical tanks; cleaning, inspection and repair, in relation to the following goods: pools, tanks and other spaces for fish farming; sludge suction and flushing of waste and storm water systems; information relating to construction, repair and building; plumbing installation, maintenance and repair; cleaning of buildings [interior and exterior surface]; emptying of grease traps; building construction; construction of waste incineration plants and waste processing plants; construction, overhaul, repair and installation of waste incineration equipment; installation and repair of electrical, heating and central heating equipment; repair and maintenance of equipment and hardware for process automation systems and computer systems; inspection, control and repair of oil burners; installation, maintenance and repair of charging apparatus and electric monitoring apparatus; installation, maintenance and repair of district heating apparatus; repair of machines, devices and instruments used in the waste industry; installation of machines, devices and instruments used in the waste industry; construction services, maintenance and repair services, repair and installation services in connection with the transfer and distribution of waste; construction inspection; examination, maintenance and repair in power plant operations and energy-intensive industry; installation services, maintenance and repair services, and maintenance for equipment relating to the production, use, transmission and delivery of waste; installation, overhaul, maintenance and advisory services for different kinds of power plants and industrial production plants; construction, installation, overhaul and repair of power plant boilers; construction and installation services relating to energy solutions for buildings and cooling solutions for computer rooms and industrial processes; installation and overhaul services for solar electricity systems and advisory services relating thereto; installation and overhaul services for solar heat systems and advisory services relating thereto. Scientific and technological services and research and design relating thereto; industrial analysis and research services; research relating to mineral resources; research on raw materials; research on raw material sources; research on waste; provision of technical advice, in the following fields: environmental science and environmental engineering.

Abstract

An arrangement for production of fully soluble, pure and well-defined mono- or di-potassium phosphates, comprises an extraction section, a stripping section and end treatment arrangements. The extraction section performs a liquid-liquid extraction of phosphate between a feed liquid comprising phosphoric acid. The stripping section performs a liquid-liquid extraction of phosphate between solvent loaded with phosphate and a strip solution. The solvent depleted in phosphate is recirculated to the extraction section for further extraction of phosphate. The strip solution is an aqueous potassium phosphate solution. The end treatment arrangements comprise a source of potassium base, an adding arrangement, a cooling arrangement, a precipitate remover and a recirculation system.

IPC Classes  ?

• C01B 25/30 - Alkali metal phosphates

Goods & Services

Salts for industrial purposes; fertilizing preparations; growing media, fertilizers and chemicals for use in agriculture, horticulture and forestry; salts [fertilizers]; potassium chloride; potassium chloride fertilizer; potassium sulphate; potassium sulphate fertilizer; potassium salts, other than for medical purposes; ammonia; phosphorus; phosphates; calcium phosphates; ammonium phosphate; ammonium salts; ammonium sulphate; aluminium salts; aluminium hydrate; aluminium chloride; aluminium sulphate; alkaline metals; iron salts; iron chloride; ferrous sulphate; agglutinants for plaster; fly ash for general manufacturing use; sodium chloride; lime chloride; chemicals used in horticulture; chemicals used in forestry; chemical preparations for use in photography; chemicals for use in agriculture; compost, manures, fertilizers; biological preparations for use in industry and science; sal ammoniac; ammonium nitrate; nitrogen; nitrogen compounds; sands for use in metallurgy; aluminate; lime carbonate; foundry sand; sodium aluminate; none of the aforementioned products include resin or resin products or products related thereto. Water purification; extraction of minerals contained in waste residues; extraction of elements contained in waste residues; information, advice and consultancy services relating to the recycling of waste and trash; recycling of valuable materials; recycling of metals; treatment [reclamation] of material from hazardous products; treatment [reclamation] of material from waste; recycling of waste; reclamation of material from waste; recycling and waste treatment; recycling services; recycling of waste; chemical treatment of waste products; water treatment and purification; recycling of waste and trash; air treatment; waste water treatment; recycling of minerals. Technological services; industrial analysis and research services; research relating to mineral resources; scientific and technology services; technological research; scientific services and design relating thereto; technological services and design relating thereto; scientific research; none of the aforementioned services are in the field of polyurethane products and adhesives for use in industry.

Goods & Services

(1) Salts for industrial purposes; fertilizing preparations; growing media, fertilizers and chemicals for use in agriculture, horticulture and forestry; salts [fertilizers]; potassium chloride; potassium chloride fertilizer; potassium sulphate; potassium sulphate fertilizer; potassium salts, other than for medical purposes; ammonia; phosphorus; phosphates; calcium phosphates; ammonium phosphate; ammonium salts; ammonium sulphate; aluminium salts; aluminium hydrate; aluminium chloride; aluminium sulphate; alkaline metals; iron salts; iron chloride; ferrous sulphate; agglutinants for plaster; fly ash for general manufacturing use; sodium chloride; lime chloride; chemicals used in horticulture; chemicals used in forestry; chemical preparations for use in photography; chemicals for use in agriculture; compost, manures, fertilizers; biological preparations for use in industry and science; sal ammoniac; ammonium nitrate; nitrogen; nitrogen compounds; sands for use in metallurgy; aluminate; lime carbonate; foundry sand; sodium aluminate; none of the aforementioned products include resin or resin products or products related thereto. (1) Water purification; extraction of minerals contained in waste residues; extraction of elements contained in waste residues; information, advice and consultancy services relating to the recycling of waste and trash; recycling of valuable materials; recycling of metals; treatment [reclamation] of material from hazardous products; treatment [reclamation] of material from waste; recycling of waste; reclamation of material from waste; recycling and waste treatment; recycling services; chemical treatment of waste products; water treatment and purification; recycling of waste and trash; air treatment; waste water treatment; recycling of minerals. (2) Technological services; industrial analysis and research services; research relating to mineral resources; scientific and technology services; technological research; scientific services and design relating thereto; technological services and design relating thereto; scientific research; none of the aforementioned services are in the field of polyurethane products and adhesives for use in industry.

Goods & Services

Salts for industrial purposes; fertilizing preparations; growing media for plants, fertilizers and chemicals for use in agriculture, horticulture and forestry except fungicides, herbicides, insecticides and parasiticides; salts being fertilizers; potassium chloride for industrial purposes; potassium chloride fertilizer; potassium sulphate; potassium sulphate fertilizer; potassium salts, other than for medical purposes, for industrial purposes; ammonia for industrial purposes; phosphorus; phosphates; calcium phosphates; ammonium phosphate; ammonium salts; ammonium sulphate; aluminium salts; aluminium hydrate; aluminium chloride; aluminium sulphate; alkaline metals; iron salts for industrial purposes; iron chloride; ferrous sulphate; agglutinants for plaster, namely industrial gluing agents; fly ash for general manufacturing use; sodium chloride; lime chloride; chemicals used in horticulture except fungicides, herbicides, insecticides and parasiticides; chemicals used in forestry except fungicides, herbicides, insecticides and parasiticides; chemical preparations for use in photography; chemicals for use in agriculture except fungicides, herbicides, insecticides and parasiticides; compost, manures, fertilizers; biological preparations for use in industry and science; sal ammoniac; ammonium nitrate; nitrogen; nitrogen compounds; foundry sands for use in metallurgy; aluminate; lime carbonate; foundry sand; sodium aluminate; none of the aforementioned products include resin or resin products or products related thereto Water purification; extraction of minerals contained in waste residues, namely, waste treatment; extraction of elements contained in waste residues, namely waste treatment; information, advice and consultancy services relating to the recycling of waste and trash; recycling of valuable materials; recycling of metals; treatment of material from hazardous products, namely metal reclamation services; treatment of material from waste, namely metal reclamation services; reclamation of material from waste, namely metal reclamation services; recycling and waste treatment; recycling services; recycling of waste; chemical treatment of waste products; water treatment and purification; recycling of waste and trash; air treatment, namely air purification; waste water treatment; recycling of minerals Technological services, namely computer technology consultancy; industrial analysis and research services in the field of biochemistry and agricultural chemistry; scientific research relating to mineral resources; scientific and technology services, namely, scientific research and development; technological research, namely, research and development of technology in the field of environmental science and product development; scientific services and design relating thereto, namely, engineering design services; technological services and design relating thereto, namely, computer systems design; scientific research; none of the aforementioned services are in the field of polyurethane products and adhesives for use in industry

Goods & Services

Cleaning, Inspection and Repair, in relation to the following goods: Cisterns, Oil tanks, and Chemical tanks; Cleaning, Inspection and Repair, in relation to the following goods: Pools, tanks and other spaces for fish farming; Sludge suction and flushing of waste and storm water systems; Information relating to construction, repair and building; Plumbing installation, maintenance and repair; Cleaning of buildings [interior and exterior surface]; Emptying of grease traps; Building construction; construction of waste incineration plants and waste processing plants; construction, overhaul, repair and installation of waste incineration equipment; installation and repair of electrical, heating and central heating equipment; repair and maintenance of equipment and hardware for process automation systems and computer systems; inspection, control and repair of oil burners; installation, maintenance and repair of charging apparatus and electric monitoring apparatus; installation, maintenance and repair of district heating apparatus; Repair of machines, devices and instruments used in the waste industry; Installation of machines, devices and instruments used in the waste industry; Construction services, surveying services for maintenance and repair, repair and installation services in connection with the transfer and distribution of waste; Construction inspection; Examination, maintenance and repair in power plant operations and energy-intensive industry; Installation services, surveying services for maintenance and repair, and maintenance for equipment relating to the production, use, transmission and delivery of waste; Installation, overhaul, maintenance and advisory services for different kinds of power plants and industrial production plants; construction, installation, overhaul and repair of power plant boilers; Construction and installation services relating to energy solutions for buildings and cooling solutions for computer rooms and industrial processes; installation and overhaul services for solar electricity systems and advisory services relating thereto; installation and overhaul services for solar heat systems and advisory services relating thereto. Scientific and technological services and research and design relating thereto; Industrial analysis and research services; Research relating to mineral resources; Research on raw materials; Research on raw material sources; Research on waste; Provision of technical advice, in the following fields: Environmental science and Environmental engineering.

Goods & Services

Chemicals used in industry; salts for industrial purposes; manures; growing media, fertilizers and chemicals for use in agriculture, horticulture and forestry; salts [fertilisers]; potassium chloride; potassium chloride fertilizer; potassium sulphate; potassium sulphate fertilizer; potassium salts, other than for medical purposes; ammonia; phosphorus; phosphates; calcium phosphates; ammonium phosphate; ammonium salts; ammonium sulphate; aluminium salts; aluminium hydroxide; aluminium chloride; aluminium sulphate; alkaline metals; iron salts; iron chloride; ferrous sulphate; agglutinants for plaster; fly ash for general manufacturing use; sodium chloride; lime chloride; chemicals used in horticulture; chemicals used in science; chemicals used in forestry; chemicals used in photography; chemicals used in industry; chemicals for use in agriculture; adhesives used in industry; compost, manures, fertilizers; biological preparations for use in industry and science; sal ammoniac; ammonium nitrate; nitrogen; nitrogen compounds; sands for use in metallurgy; aluminate; lime carbonate; monoammonium phosphate. Water purification; extraction of minerals contained in waste residues; extraction of elements contained in waste residues; information, advice and consultancy services relating to the recycling of waste and trash; recycling of valuable materials; recycling of metals; treatment [reclamation] of material from hazardous products; treatment [reclamation] of material from waste; recycling of waste; reclamation of material from waste; recycling and waste treatment; recycling services; recycling of waste; chemical treatment of waste products; water treatment and purification; recycling of waste and trash; air treatment; waste water treatment; recycling of minerals. Technological services; industrial analysis and research services; research relating to mineral resources; scientific and technological services; research relating to technology; scientific services and design relating thereto; technological services and design relating thereto; scientific research.

Goods & Services

Industrial chemicals; salts for industrial purposes; fertilizing preparations; growing media, fertilizers and chemicals for use in agriculture, horticulture and forestry; salts [fertilizers]; potassium chloride; potassium chloride fertilizer; potassium sulphate; potassium sulphate fertilizer; potassium salts, other than for medical purposes; ammonia; phosphorus; phosphates; calcium phosphates; ammonium phosphate; ammonium salts; ammonium sulphate; aluminium salts; aluminium hydrate; aluminium chloride; aluminium sulphate; alkaline metals; iron salts; iron chloride; ferrous sulphate; agglutinants for plaster; fly ash for general manufacturing use; sodium chloride; lime chloride; chemicals used in horticulture; chemicals used in science; chemicals used in forestry; chemical preparations for use in photography; industrial chemicals; chemicals for use in agriculture; adhesives for use in industry; compost, manures, fertilizers; biological preparations for use in industry and science; sal ammoniac; ammonium nitrate; nitrogen; nitrogen compounds; sands for use in metallurgy; aluminate; lime carbonate; ammonium nitrogen. Water purification; extraction of minerals contained in waste residues; extraction of elements contained in waste residues; information, advice and consultancy services relating to the recycling of waste and trash; recycling of valuable materials; recycling of metals; treatment [reclamation] of material from hazardous products; treatment [reclamation] of material from waste; recycling of waste; reclamation of material from waste; recycling and waste treatment; recycling services; recycling of waste; chemical treatment of waste products; water treatment and purification; recycling of waste and trash; air treatment; waste water treatment; recycling of minerals. Technological services; industrial analysis and research services; research relating to mineral resources; scientific and technological services; technological research; scientific services and design relating thereto; technological services and design relating thereto; scientific research.

Goods & Services

(1) Industrial chemicals; salts for industrial purposes; fertilizing preparations; growing media, fertilizers and chemicals for use in agriculture, horticulture and forestry; salts [fertilizers]; potassium chloride; potassium chloride fertilizer; potassium sulphate; potassium sulphate fertilizer; potassium salts, other than for medical purposes; ammonia; phosphorus; phosphates; calcium phosphates; ammonium phosphate; ammonium salts; ammonium sulphate; aluminium salts; aluminium hydrate; aluminium chloride; aluminium sulphate; alkaline metals; iron salts; iron chloride; ferrous sulphate; agglutinants for plaster; fly ash for general manufacturing use; sodium chloride; lime chloride; chemicals used in horticulture; chemicals used in science; chemicals used in forestry; chemical preparations for use in photography; chemicals for use in agriculture; adhesives for use in industry; compost, manures, fertilizers; biological preparations for use in industry and science; sal ammoniac; ammonium nitrate; nitrogen; nitrogen compounds; sands for use in metallurgy; aluminate; lime carbonate; ammonium nitrogen. (1) Water purification; extraction of minerals contained in waste residues; extraction of elements contained in waste residues; information, advice and consultancy services relating to the recycling of waste and trash; recycling of valuable materials; recycling of metals; treatment [reclamation] of material from hazardous products; treatment [reclamation] of material from waste; recycling of waste; reclamation of material from waste; recycling and waste treatment; recycling services; chemical treatment of waste products; water treatment and purification; recycling of waste and trash; air treatment; waste water treatment; recycling of minerals. (2) Technological services; industrial analysis and research services; research relating to mineral resources; scientific and technological services; technological research; scientific services and design relating thereto; technological services and design relating thereto; scientific research.

Goods & Services

(1) Chemicals used in industry; salts for industrial purposes; manures; growing media, fertilizers and chemicals for use in agriculture, horticulture and forestry; salts [fertilisers]; potassium chloride; potassium chloride fertilizer; potassium sulphate; potassium sulphate fertilizer; potassium salts, other than for medical purposes; ammonia; phosphorus; phosphates; calcium phosphates; ammonium phosphate; ammonium salts; ammonium sulphate; aluminium salts; aluminium hydroxide; aluminium chloride; aluminium sulphate; alkaline metals; iron salts; iron chloride; ferrous sulphate; agglutinants for plaster; fly ash for general manufacturing use; sodium chloride; lime chloride; chemicals used in horticulture; chemicals used in science; chemicals used in forestry; chemicals used in photography; chemicals for use in agriculture; adhesives used in industry; compost, manures, fertilizers; biological preparations for use in industry and science; sal ammoniac; ammonium nitrate; nitrogen; nitrogen compounds; sands for use in metallurgy; aluminate; lime carbonate; monoammonium phosphate. (1) Water purification; extraction of minerals contained in waste residues; extraction of elements contained in waste residues; information, advice and consultancy services relating to the recycling of waste and trash; recycling of valuable materials; recycling of metals; treatment [reclamation] of material from hazardous products; treatment [reclamation] of material from waste; recycling of waste; reclamation of material from waste; recycling and waste treatment; recycling services; chemical treatment of waste products; water treatment and purification; recycling of waste and trash; air treatment; waste water treatment; recycling of minerals. (2) Technological services; industrial analysis and research services; research relating to mineral resources; scientific and technological services; research relating to technology; scientific services and design relating thereto; technological services and design relating thereto; scientific research.

Goods & Services

Industrial chemicals; salts for industrial purposes; fertilizing preparations; growing media for plants, fertilizers and chemicals for use in agriculture, horticulture and forestry except fungicides, herbicides, insecticides and parasiticides; salts being fertilizers; potassium chloride for industrial purposes; potassium chloride fertilizer; potassium sulphate; potassium sulphate fertilizer; potassium salts, other than for medical purposes for industrial purposes; ammonia for industrial purposes; phosphorus; phosphates; calcium phosphates; ammonium phosphate; ammonium salts; ammonium sulphate; aluminium salts; aluminium hydrate; aluminium chloride; aluminium sulphate; alkaline metals; iron salts for industrial purposes; iron chloride; ferrous sulphate; agglutinants for plaster, namely, industrial gluing agents; fly ash for general manufacturing use; sodium chloride; lime chloride; chemicals used in horticulture except fungicides, herbicides, insecticides, and parasiticides; chemicals used in science; chemicals used in forestry, except fungicides, herbicides, insecticides and parasiticides; chemical preparations for use in photography; chemicals for use in agriculture except fungicides, herbicides, insecticides and parasiticides; adhesives for use in industry; compost, manures, fertilizers; biological preparations for use in industry and science; sal ammoniac; ammonium nitrate; nitrogen; nitrogen compounds; foundry sands for use in metallurgy; aluminate; lime carbonate; ammonium nitrogen, namely, chemicals for use in industry Water purification; extraction of minerals contained in waste residues, namely, waste processing; extraction of elements contained in waste residues, namely, waste treatment; information, advice and consultancy services relating to the recycling of waste and trash; recycling of valuable materials; recycling of metals; treatment reclamation of material from hazardous products, namely, metal reclamation services; treatment reclamation of material from waste, namely, waste processing; recycling of waste; reclamation of material from waste, namely, metal reclamation services; recycling and waste treatment; recycling services; chemical treatment of waste products; water treatment and purification; recycling of waste and trash; air treatment, namely, air purification; waste water treatment; recycling of minerals Technological services, namely, research and development for others in connection with new technology and processes for extracting raw materials and using them in manufacturing; industrial analysis and research services in the field of waste treatment analysis; scientific research relating to mineral resources; scientific and technological services, namely, scientific research and development; technological research, namely, research and development of technology in the field of environmental science and environmental engineering; scientific services and design relating thereto, namely, engineering design services; technological services and design relating thereto, namely, research and development for others in connection with new technology and processes for extracting raw materials and using them in manufacturing; scientific research

Goods & Services

Industrial analysis and research services in the field of biochemistry and agricultural chemistry; scientific research relating to mineral resources; scientific and technological services, namely, scientific research and development; research relating to technology, namely, research and development of technology in the field of environmental science and product development; scientific services and design relating thereto, namely, engineering design services; scientific research Chemicals used in industry; salts for industrial purposes; manures; growing media for plants, fertilizers and chemicals for use in agriculture, horticulture and forestry except fungicides, herbicides, insecticides and parasiticides; salts being fertilisers; potassium chloride for industrial purposes; potassium chloride fertilizer; potassium sulphate; potassium sulphate fertilizer; potassium salts, other than for medical purposes, for industrial purposes; ammonia for industrial purposes; phosphorus; phosphates; calcium phosphates; ammonium phosphate; ammonium salts; ammonium sulphate; aluminium salts; aluminium hydroxide; aluminium chloride; aluminium sulphate; alkaline metals; iron salts for industrial purposes; iron chloride; ferrous sulphate; agglutinants for plaster, namely, industrial gluing agents; fly ash for general manufacturing use; sodium chloride; lime chloride; chemicals used in horticulture except fungicides, herbicides, insecticides and parasiticides; chemicals used in science; chemicals used in forestry except fungicides, herbicides, insecticides and parasiticides; chemicals used in photography; chemicals for use in agriculture except fungicides, herbicides, insecticides and parasiticides; adhesives used in industry; compost, manures, fertilizers; biological preparations for use in industry and science; sal ammoniac; ammonium nitrate; nitrogen; nitrogen compounds; foundry sands for use in metallurgy; aluminate; lime carbonate; monoammonium phosphate Water purification; extraction of minerals contained in waste residues, namely, waste treatment; extraction of elements contained in waste residues, namely, waste treatment; information, advice and consultancy services relating to the recycling of waste and trash; recycling of valuable materials; recycling of metals; treatment reclamation of material from hazardous products, namely, metal reclamation services; treatment reclamation of material from waste, namely metal reclamation services; recycling of waste; reclamation of material from waste; recycling and waste treatment; recycling services; chemical treatment of waste products; water treatment and purification; recycling of waste and trash; air treatment, namely, air purification; waste water treatment; recycling of minerals

Abstract

A method for decomposing struvite comprises dissolving of a feed material comprising struvite in a mineral acid. Thereby a solution having an acid pH is formed. Magnesium is removed from the solution. The removing of magnesium comprises increasing a pH of the solution to a pH in the range of 4.5 to 6, precipitating magnesium compounds that do not comprise ammonium, and separating the precipitated magnesium compounds from the solution. Thereby, the solution, after the removing of magnesium, comprises an ammonium salt of the mineral acid. An arrangement for performing such a method is also disclosed. Also, a method and arrangement for recovering at least nitrogen from waste material, based on the decomposing of struvite are disclosed.

IPC Classes  ?

• C02F 1/66 - Treatment of water, waste water, or sewage by neutralisationTreatment of water, waste water, or sewage pH adjustment
• C02F 1/52 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities

Abstract

A method for chemical processing of sewage sludge ash comprises dissolving (S10) a start material, emanating from sewage sludge ash, in an acid comprising hydrochloric acid. The start material comprising at least silicon and iron compounds. Undissolved residues are separated (S12), whereby a leachate remains. The amount of colloidal silica in the dissolved sewage sludge ash is controlled (S15). At least one of iron and phosphorus is extracted (20) from the leachate by liquid-liquid extraction with an organic solvent. At least a part of a raffinate at least partly depleted in at least one of iron and phosphorus originating from the step of extracting at least one of iron and phosphorus is recirculated (S90) for dissolving the start material, emanating from sewage sludge ash. The recirculated part of the raffinate at least partly depleted in at least one of iron and phosphorus comprises chloride ions. An arrangement for chemical processing of sewage sludge ash is also disclosed.

IPC Classes  ?

• C01B 25/22 - Preparation by reacting phosphate containing material with an acid, e.g. wet process
• C01B 25/46 - Preparation involving solvent-solvent extraction
• C05B 11/12 - Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using aqueous hydrochloric acid

Abstract

A method for chemical processing of sewage sludge ash comprises dissolving (S10) a start material, emanating from sewage sludge ash, in an acid comprising hydrochloric acid. The start material comprising at least silicon and iron compounds. Undissolved residues are separated (S12), whereby a leachate remains. The amount of colloidal silica in the dissolved sewage sludge ash is controlled (S15). At least one of iron and phosphorus is extracted (20) from the leachate by liquid-liquid extraction with an organic solvent. At least a part of a raffinate at least partly depleted in at least one of iron and phosphorus originating from the step of extracting at least one of iron and phosphorus is recirculated (S90) for dissolving the start material, emanating from sewage sludge ash. The recirculated part of the raffinate at least partly depleted in at least one of iron and phosphorus comprises chloride ions. An arrangement for chemical processing of sewage sludge ash is also disclosed.

IPC Classes  ?

• C01B 25/22 - Preparation by reacting phosphate containing material with an acid, e.g. wet process
• B09B 3/00 - Destroying solid waste or transforming solid waste into something useful or harmless
• C01B 25/46 - Preparation involving solvent-solvent extraction
• C01G 49/00 - Compounds of iron
• C02F 11/00 - Treatment of sludgeDevices therefor
• C05B 11/12 - Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using aqueous hydrochloric acid
• C05F 7/00 - Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses

Goods & Services

Industrial chemicals; Salts for industrial purposes; Fertilizing preparations; Growing media, fertilizers and chemicals for use in agriculture, horticulture and forestry; Salts [fertilizers]; Potassium chloride; Potassium chloride fertilizer; Potassium sulphate; Potassium sulphate fertilizer; Potassium salts, other than for medical purposes; Ammonia; Phosphorus; Phosphates; Calcium phosphates; Ammonium phosphate; Ammonium salts; Ammonium sulphate; Aluminium salts; Aluminium hydrate; Aluminium chloride; Aluminium sulphate; Alkaline metals; Iron salts; Iron chloride; Ferrous sulphate; Agglutinants for plaster; Fly ash for general manufacturing use; Sodium chloride; Lime chloride; Chemicals used in horticulture; Chemicals used in science; Chemicals used in forestry; Chemical preparations for use in photography; Industrial chemicals; Chemicals for use in agriculture; Adhesives for use in industry; Compost, manures, fertilizers; Biological preparations for use in industry and science; Sal ammoniac; Ammonium nitrate; Nitrogen; Nitrogen compounds; Sands for use in metallurgy; Aluminate; Lime carbonate; Ammonium nitrogen. Water purification; Extraction of minerals contained in waste residues; Extraction of elements contained in waste residues; Information, advice and consultancy services relating to the recycling of waste and trash; Recycling of valuable materials; Recycling of metals; Treatment [reclamation] of material from hazardous products; Treatment [reclamation] of material from waste; Recycling of waste; Reclamation of material from waste; Recycling and waste treatment; Recycling services; Recycling of waste; Chemical treatment of waste products; Water treatment and purification; Recycling of waste and trash; Air treatment; Waste water treatment; Recycling of minerals. Technological services; Industrial analysis and research services; Research relating to mineral resources; Science and technology services; Technological research; Scientific services and design relating thereto; Technological services and design relating thereto; Scientific research.

Goods & Services

Chemicals used in industry; Salts for industrial purposes; Manures; Growing media, fertilizers and chemicals for use in agriculture, horticulture and forestry; Salts [fertilisers]; Potassium chloride; Potassium chloride fertilizer; Potassium sulphate; Potassium sulphate fertilizer; Potassium salts, other than for medical purposes; Ammonia; Phosphorus; Phosphates; Calcium phosphates; Ammonium phosphate; Ammonium salts; Ammonium sulphate; Aluminium salts; Aluminium hydroxide; Aluminium chloride; Aluminium sulphate; Alkaline metals; Iron salts; Iron chloride; Ferrous sulphate; Agglutinants for plaster; Fly ash for general manufacturing use; Sodium chloride; Lime chloride; Chemicals used in horticulture; Chemicals used in science; Chemicals used in forestry; Chemicals used in photography; Chemicals used in industry; Chemicals for use in agriculture; Adhesives used in industry; Compost, manures, fertilizers; Biological preparations for use in industry and science; Sal ammoniac; Ammonium nitrate; Nitrogen; Nitrogen compounds; Sands for use in metallurgy; Aluminate; Lime carbonate; monoammonium phosphate. Water purification; Extraction of minerals contained in waste residues; Extraction of elements contained in waste residues; Information, advice and consultancy services relating to the recycling of waste and trash; Recycling of valuable materials; Recycling of metals; Treatment [reclamation] of material from hazardous products; Treatment [reclamation] of material from waste; Recycling of waste; Reclamation of material from waste; Recycling and waste treatment; Recycling services; Recycling of waste; Chemical treatment of waste products; Water treatment and purification; Recycling of waste and trash; Air treatment; Waste water treatment; Recycling of minerals. Technological services; Industrial analysis and research services; Research relating to mineral resources; Science and technology services; Research relating to technology; Scientific services and design relating thereto; Technological services and design relating thereto; Scientific research.

Goods & Services

Salts for industrial purposes; Fertilizing preparations; Growing media, fertilizers and chemicals for use in agriculture, horticulture and forestry; Salts [fertilizers]; Potassium chloride; Potassium chloride fertilizer; Potassium sulphate; Potassium sulphate fertilizer; Potassium salts, other than for medical purposes; Ammonia; Phosphorus; Phosphates; Calcium phosphates; Ammonium phosphate; Ammonium salts; Ammonium sulphate; Aluminium salts; Aluminium hydrate; Aluminium chloride; Aluminium sulphate; Alkaline metals; Iron salts; Iron chloride; Ferrous sulphate; Agglutinants for plaster; Fly ash for general manufacturing use; Sodium chloride; Lime chloride; Chemicals used in horticulture; Chemicals used in forestry; Chemical preparations for use in photography; Chemicals for use in agriculture; Compost, manures, fertilizers; Biological preparations for use in industry and science; Sal ammoniac; Ammonium nitrate; Nitrogen; Nitrogen compounds; Sands for use in metallurgy; Aluminate; Lime carbonate; Sand; Sodium aluminate; none of the aforementioned products include resin or resin products or products related thereto. Water purification; Extraction of minerals contained in waste residues; Extraction of elements contained in waste residues; Information, advice and consultancy services relating to the recycling of waste and trash; Recycling of valuable materials; Recycling of metals; Treatment [reclamation] of material from hazardous products; Treatment [reclamation] of material from waste; Recycling of waste; Reclamation of material from waste; Recycling and waste treatment; Recycling services; Recycling of waste; Chemical treatment of waste products; Water treatment and purification; Recycling of waste and trash; Air treatment; Waste water treatment; Recycling of minerals. Technological services; Industrial analysis and research services; Research relating to mineral resources; Science and technology services; Technological research; Scientific services and design relating thereto; Technological services and design relating thereto; Scientific research; none of the aforementioned services are in the field of polyurethane products and adhesives for use in industry.

Abstract

A method for recovery of commercial substances from apatite mineral comprises dissolving (S10) of apatite mineral in an acid comprising hydrochloride. The dissolution gives a first liquid solution comprising phosphate, calcium and chloride ions. The first liquid solution is treated (S20) into a second liquid solution comprising calcium and chloride ions. This treatment in turn comprises extracting (S22) of a major part of the phosphate ions with an organic solvent. A bleed solution is removed (S30) from the second solution. Solid gypsum comprising at least 70% in a di-hydrate crystal form is precipitated (S40) from the second solution. This precipitation of solid gypsum comprises adding (S42) the second solution and sulfuric acid simultaneously into a continuous-stirred reactor in the presence of gypsum crystals. Thereby, the precipitation of solid gypsum gives a third liquid solution comprising hydrochloride. An arrangement for recovery of commercial substances from apatite mineral is also presented.

IPC Classes  ?

• C01B 25/22 - Preparation by reacting phosphate containing material with an acid, e.g. wet process
• C01F 11/46 - Sulfates

Abstract

A method for recovery of commercial substances from apatite mineral comprises dissolving (S10) of apatite mineral in an acid comprising hydrochloride. The dissolution gives a first liquid solution comprising phosphate, calcium and chloride ions. The first liquid solution is treated (S20) into a second liquid solution comprising calcium and chloride ions. This treatment in turn comprises extracting (S22) of a major part of the phosphate ions with an organic solvent. A bleed solution is removed (S30) from the second solution. Solid gypsum comprising at least 70% in a di-hydrate crystal form is precipitated (S40) from the second solution. This precipitation of solid gypsum comprises adding (S42) the second solution and sulfuric acid simultaneously into a continuous-stirred reactor in the presence of gypsum crystals. Thereby, the precipitation of solid gypsum gives a third liquid solution comprising hydrochloride. An arrangement for recovery of commercial substances from apatite mineral is also presented.

IPC Classes  ?

• C01B 25/22 - Preparation by reacting phosphate containing material with an acid, e.g. wet process
• C01F 11/46 - Sulfates

Goods & Services

(1) Industrial chemicals for use in the recycling of waste and garbage and in the reclamation of usable materials from residue of waste and garbage; industrial chemicals, namely, sodium aluminate, iron phosphates and calcium chloride; salts for industrial purposes, namely, alkali-metal salts, salts for water softening, salts for galvanic batteries, salts for coloring metal, salts for use for de-dusting of roads, salts for use for de-icing of roads; fertilisers, and chemicals for use in agriculture, horticulture and forestry; salts for use as fertilizers; potassium chloride; potassium chloride fertilizer; potassium sulphate; potassium sulphate fertilizer; potassium salts, other than for medical purposes; lime chloride; sodium chloride; ammonium hydroxide; anhydrous ammonia; ammonia for use in fertilizers; ammonia water; ammonia volatile alkali for industrial purposes; ammonium sulfate; phosphorus; phosphate for use in animal feed; phosphate fertilizers; fused phosphate fertilizers; potassium phosphates; aluminum phosphates; calcium phosphates; ammonium phosphate; ammonium salts; ammonium sulphate; aluminium salts; aluminium hydrate; aluminium chloride; aluminium sulphate; rare earth metal powder; rare earth metal salts; iron salts; iron hydroxide; iron chloride; ferrous sulphate; alkaline metals; agglutinants for plaster; fly ash for general manufacturing use; fertilisers (1) Recycling of precious metals; recycling of trash; recycling of mineral waste; recycling of waste; environmental remediation services being treatment of waste and garbage produced in industry to reclaim usable materials; incineration of waste and trash; recycling of waste and trash; treatment of chemical waste; recycling and reclamation of usable materials from residue of waste produced in industry for others; decontamination of hazardous materials; detoxification of hazardous materials; treatment of ashes; recycling of minerals; recycling of metals; recycling of valuable materials; information, advice and consultancy services relating to the recycling of waste and trash; extraction of elements contained in waste residues; extraction of minerals contained in waste residues; treatment of liquids, namely extraction of salts from liquids; treatment of liquids, namely extraction of calcium chloride from liquids; treatment of liquids, namely extraction of potassium chloride from liquids; treatment of liquids, namely extraction of sodium chloride from liquids; treatment of liquids, namely extraction of ammonia from liquids; water purification (2) Design and development of heating, ventilating and air conditioning equipment and systems, configuration of electrical building control systems for heating, ventilation and air conditioning, design and development of safe waste and sludge disposal equipment and systems, design and development of plumbing equipment and systems, development of voluntary standards for eco-friendly building construction; bacteriological research and analysis, biochemical research and analysis, chemical analysis, conducting sampling and analysis services to check for contamination, industrial structural analysis, structural analysis of buildings; research relating to mineral resources; research relating to raw materials; research relating to raw material sources; research relating to waste; technical consultancy in the field of environmental science and environmental engineering

Goods & Services

Chemical substances, chemical materials and chemical preparations, and natural fertilizers; industrial chemicals; salts for industrial purposes; fertilizing preparations; growing media, fertilizers and chemicals for use in agriculture, horticulture and forestry; salts [fertilizers]; potassium chloride; potassium chloride fertilizer; potassium sulphate; potassium sulphate fertilizer; potassium salts, other than for medical purposes; ammonia; phosphorus; phosphates; calcium phosphates; ammonium phosphate; ammonium salts; ammonium sulphate; aluminium salts; aluminium hydrate; aluminium chloride; aluminium sulphate; rare earth metals; alkaline metals; iron salts; iron hydroxide; iron chloride; ferrous sulphate; agglutinants for plaster; fly ash for general manufacturing use; sodium chloride; lime chloride. Recycling services; recycling of waste; treatment of waste and garbage; reclamation of material from waste; treatment [reclamation] of material from waste; treatment of material from waste; treatment [reclamation] of material from hazardous products; treatment of ashes; recycling of minerals; recycling of metals; recycling of valuable materials; information, advice and consultancy services relating to the recycling of waste and trash; extraction of elements contained in waste residues; extraction of minerals contained in waste residues; treatment of liquids, namely extraction of salts from liquids; treatment of liquids, namely extraction of calcium chloride from liquids; treatment of liquids, namely extraction of potassium chloride from liquids; treatment of liquids, namely extraction of sodium chloride from liquids; treatment of liquids, namely extraction of ammonia from liquids; water purification.

Abstract

An arrangement (100) for production of fully soluble, pure and well-defined mono- or di-potassium phosphates, comprises an extraction section (10), a stripping section (20) and end treatment arrangements (90). The extraction section performs a liquid-liquid extraction of phosphate between a feed liquid (1) comprising phosphoric acid. The stripping section performs a liquid-liquid extraction of phosphate between solvent loaded with phosphate and a strip solution (4). The solvent depleted in phosphate is recirculated to the extraction section for further extraction of phosphate. The strip solution is an aqueous potassium phosphate solution. The end treatment arrangements comprise a source of potassium base (60), an adding arrangement (70), a cooling arrangement (50), a precipitate remover (40) and a recirculation system (80).

IPC Classes  ?

• C05B 11/10 - Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using orthophosphoric acid
• C01B 25/30 - Alkali metal phosphates

Abstract

An arrangement (100) for production of fully soluble, pure and well-defined mono- or di-potassium phosphates, comprises an extraction section (10), a stripping section (20) and end treatment arrangements (90). The extraction section performs a liquid-liquid extraction of phosphate between a feed liquid (1) comprising phosphoric acid. The stripping section performs a liquid-liquid extraction of phosphate between solvent loaded with phosphate and a strip solution (4). The solvent depleted in phosphate is recirculated to the extraction section for further extraction of phosphate. The strip solution is an aqueous potassium phosphate solution. The end treatment arrangements comprise a source of potassium base (60), an adding arrangement (70), a cooling arrangement (50), a precipitate remover (40) and a recirculation system (80).

IPC Classes  ?

• C05B 11/10 - Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using orthophosphoric acid
• C01B 25/30 - Alkali metal phosphates
• C05B 7/00 - Fertilisers based essentially on alkali or ammonium orthophosphates

Goods & Services

[ Chemical substances, chemical materials and chemical preparations, and natural fertilizers, all for industrial use; industrial chemicals; ] salts for industrial purposes; [ fertilizing preparations; growing media for plants, fertilizers and chemicals for use in agriculture, horticulture and forestry except fungicides, herbicides, insecticides and parasiticides; ] salts being fertilizers; potassium chloride; potassium chloride fertilizer; potassium sulphate; potassium sulphate fertilizer; potassium salts, other than for medical purposes; ammonia for industrial purposes; phosphorus; [ phosphates; calcium phosphates; ammonium phosphate; ] ammonium salts; ammonium sulphate; aluminium salts; aluminium hydrate; aluminium chloride; aluminium sulphate; rare earth metals; alkaline metals; iron salts; iron hydroxide; iron chloride; ferrous sulphate; agglutinants for plaster; [ fly ash for general manufacturing use; ] sodium chloride; lime chloride [ Recycling services; recycling of waste; treatment of waste and garbage; recycling, namely, reclamation of material from waste; waste treatment, namely, reclamation of material from waste; treatment of material from waste; hazardous waste treatment services, namely, reclamation of material from hazardous products; treatment of ashes; recycling of minerals; ] recycling of metals; [ recycling of valuable materials; information, advice and consultancy services relating to the recycling of waste and trash; waste processing, namely, extraction of elements contained in waste residues; waste processing, namely, extraction of minerals contained in waste residues; ] treatment of liquids, namely, extraction of salts from liquids; treatment of liquids, namely, extraction of calcium chloride from liquids; treatment of liquids, namely, extraction of potassium chloride from liquids; treatment of liquids, namely, extraction of sodium chloride from liquids; treatment of liquids, namely, extraction of ammonia from liquids; water purification

Goods & Services

(1) Salts for industrial purposes, namely, alkali-metal salts, salts for water softening, salts for galvanic batteries and salts for colouring metal; salts for use as fertilizer; potassium chloride; potassium chloride fertilizer; potassium sulphate; potassium sulphate fertilizer; potassium salts, other than for medical purposes; anhydrous ammonia, ammonia for use in fertilizers, ammonia water, ammonia volatile alkali for industrial purposes; phosphorus; ammonium salts; ammonium sulphate; aluminium salts; aluminium hydrate; aluminium chloride; aluminium sulphate; rare earth metal powder, rare earth metal salts; alkaline metals; iron salts; iron hydroxide; iron chloride; ferrous sulphate; agglutinants for plaster; sodium chloride; lime chloride. (1) Recycling of metals; treatment of liquids, namely extraction of salts from liquids; treatment of liquids, namely extraction of calcium chloride from liquids; treatment of liquids, namely extraction of potassium chloride from liquids; treatment of liquids, namely extraction of sodium chloride from liquids; treatment of liquids, namely extraction of ammonia from liquids; water purification.

Goods & Services

Cleaning, inspection and repair, in relation to the following goods: cisterns, oil tanks, and chemical tanks; cleaning, inspection and repair, in relation to the following goods: pools, tanks and other spaces for fish farming; sludge suction and flushing of waste and storm water systems; information relating to construction, repair and building; plumbing installation, maintenance and repair; cleaning of buildings [interior and exterior surface]; emptying of grease traps; building construction; construction of waste incineration plants and waste processing plants; construction, overhaul, repair and installation of waste incineration equipment; installation and repair of electrical, heating and central heating equipment; repair and maintenance of equipment and hardware for process automation systems and computer systems; inspection, control and repair of oil burners; installation, maintenance and repair of charging apparatus and electric monitoring apparatus; installation, maintenance and repair of district heating apparatus; repair of machines, devices and instruments used in the waste industry; installation of machines, devices and instruments used in the waste industry; construction, inspection prior to maintenance and repair, repair and installation services relating to the transfer and distribution of waste; construction inspection; examination, maintenance and repair in power plant operations and energy-intensive industry; installation, inspection prior to maintenance and repair, and maintenance for equipment relating to the production, use, transfer and delivery of waste; installation, overhaul, maintenance and advisory services for different kinds of power plants and industrial production plants; construction, installation, overhaul and repair of power plant boilers; building and installation services relating to energy solutions for buildings as well as to cooling solutions for computer rooms and industrial processes; installation and overhaul services for solar electricity systems and advisory services relating thereto; installation and overhaul services for solar heat systems and advisory services relating thereto. Scientific and technological services and research and design relating thereto; industrial analysis and research services; research relating to mineral resources; research on raw materials; research on raw material sources; research on waste; provision of technical advice, in the following fields: environmental science and environmental engineering.

Goods & Services

(1) Cleaning, inspection and repair of cisterns, oil tanks, and chemical tanks; cleaning, inspection and repair of pools, tanks and other spaces for fish farming; sludge suction and flushing of waste and storm water systems, namely, sludge pumps, suction pumps, suction filters, flushing tanks, storm water filtering tubes and sewer pipes; providing information relating to building construction and repair; plumbing installation, maintenance and repair; cleaning of interior and exterior surfaces of buildings; cleaning of grease traps; building construction; construction of waste incineration plants and waste processing plants; construction, overhaul, repair and installation of waste incineration equipment; installation and repair of electrical, heating and central heating equipment; repair and maintenance of equipment and hardware for process automation systems and computer systems; inspection, control and repair of oil burners; installation, maintenance and repair of charging apparatus and electric monitoring apparatus; installation, maintenance and repair of district heating apparatus; repair of machines, devices and instruments used in the waste industry; installation of machines, devices and instruments used in the waste industry; construction, inspection prior to maintenance and repair, repair and installation services relating to the transfer and distribution of waste; construction inspection; examination, maintenance and repair in power plant operations and energy intensive industry; installation, inspection prior to maintenance and repair, and maintenance for equipment relating to the production, use, transfer and delivery of waste; installation, overhaul, maintenance and advisory services for different kinds of power plants and industrial production plants; construction, installation, overhaul and repair of power plant boilers; building and installation services relating to energy solutions for buildings as well as to cooling solutions for computer rooms and industrial processes; installation and overhaul services for solar electricity systems and advisory services relating thereto; installation and overhaul services for solar heat systems and advisory services relating thereto (2) Design and development of heating, ventilating and air conditioning equipment and systems, configuration of electrical building control systems for heating, ventilation and air conditioning, design and development of safe waste and sludge disposal equipment and systems, design and development of plumbing equipment and systems, development of voluntary standards for eco-friendly building construction; bacteriological research and analysis, biochemical research and analysis, chemical analysis, conducting sampling and analysis services to check for contamination, industrial structural analysis, structural analysis of buildings; chemical and industrial research relating to mineral resources; scientific and technological research on raw materials; scientific and technological research on raw material sources; bacteriological, biochemical, chemical and industrial research on waste; provision of technical advice in the fields of environmental science and environmental engineering

Goods & Services

Cleaning and repair of cisterns, oil tanks, and chemical tanks; cleaning and repair of pools, tanks and other spaces for fish farming; cleaning of sludge and flushing of waste and storm water systems; information relating to construction, repair and building of industrial waste treatment machines; plumbing installation, maintenance and repair; cleaning of buildings for interior and exterior surface; cleaning of grease traps; building construction; construction of waste incineration plants and waste processing plants; construction, overhaul, repair and installation of waste incineration equipment; installation and repair of electrical, heating and central heating equipment; repair and maintenance of equipment and hardware for process automation systems and computer systems; regulation and repair of oil burners; installation, maintenance and repair of charging apparatus and electric monitoring apparatus; installation, maintenance and repair of district heating apparatus; repair of machines, devices and instruments used in the waste industry; installation of machines, devices and instruments used in the waste industry; construction, inspection prior to maintenance and repair and repair and installation services relating to the transfer and distribution of waste; construction inspection of buildings; maintenance and repair in power plant operations and energy intensive industry; installation, inspection prior to maintenance and repair, and maintenance for equipment relating to the production, use, transfer and delivery of waste; installation, overhaul, maintenance and advisory services for different kinds of power plants and industrial production plants; construction, installation, overhaul and repair of power plant boilers; building and installation services relating to energy solutions for buildings as well as to cooling solutions for computer rooms and industrial processes; installation and overhaul services for solar electricity systems and advisory services relating thereto; installation and overhaul services for solar heat systems and advisory services relating thereto Scientific and technological services, namely, research and design in the field of computer aided scientific research services; industrial analysis and research services in the field of waste treatment analysis; research relating to mineral resources; industrial research on raw materials; industrial research on raw material sources; industrial research on waste; provision of technical consultation in the field of environmental science and environmental engineering

Goods & Services

Cleaning, Inspection and Repair, In relation to the following goods: Cisterns, Oil tanks, and Chemical tanks; Cleaning, Inspection and Repair, In relation to the following goods: Pools, tanks and other spaces for fish farming; Sludge suction and flushing of waste and storm water systems; Information relating to construction, repair and building; Plumbing installation, maintenance and repair; Cleaning of buildings [interior and exterior surface]; Emptying of grease traps; Building construction; construction of waste incineration plants and waste processing plants; construction, overhaul, repair and installation of waste incineration equipment; installation and repair of electrical, heating and central heating equipment; repair and maintenance of equipment and hardware for process automation systems and computer systems; inspection, control and repair of oil burners; installation, maintenance and repair of charging apparatus and electric monitoring apparatus; installation, maintenance and repair of district heating apparatus; Repair of machines, devices and instruments used in the waste industry; Installation of machines, devices and instruments used in the waste industry; Construction, surveying, repair and installation services relating to the transfer and distribution of waste; Construction inspection; Examination, maintenance and repair in power plant operations and energy-intensive industry; Installation, use, surveying and maintenance for equipment relating to the production, use, transfer and delivery of waste; Installation, overhaul, maintenance and advisory services for different kinds of power plants and industrial production plants; construction, installation, overhaul and repair of power plant boilers; building and implementation services relating to energy solutions for buildings as well as to cooling solutions for computer rooms and industrial processes; installation and overhaul services for solar electricity systems and advisory services relating thereto; installation and overhaul services for solar heat systems and advisory services relating thereto. Scientific and technological services and research and design relating thereto; Industrial analysis and research services; Research relating to mineral resources; Research on raw materials; Research on raw material sources; Research on waste; Provision of technical advice, in the following fields: Environmental science and Environmental engineering.

Goods & Services

Potassium sulphate; Potassium sulphate fertilizer; Ammonia; Phosphorus; Phosphates; Calcium phosphates; Ammonium phosphate; Ammonium sulphate; Aluminium hydrate; Aluminium sulphate; Soil metals; Alkaline metals; Iron hydroxide; Ferrous sulphate; Agglutinants for plaster. Plaster of paris; Building materials, not of metal. Recycling of metals; Treatment of liquids, Namely the extraction of ammonia from liquids; Water purification.

Goods & Services

Salts for industrial purposes; Salts [fertilizers]; Potassium chloride; Potassium chloride fertilizer; Potassium sulphate; Potassium sulphate fertilizer; Potassium salts, other than for medical purposes; Ammonia; Phosphorus; Ammonium salts; Ammonium sulphate; Aluminium salts; Aluminium hydrate; Aluminium chloride; Aluminium sulphate; Soil metals; Alkaline metals; Iron salts; Iron hydroxide; Iron chloride; Ferrous sulphate; Agglutinants for plaster; Sodium chloride; Lime chloride. Plaster of paris; Building materials, not of metal. Recycling of metals; Treatment of liquids, Namely the extraction of salts from liquids; Treatment of liquids, Namely the extraction of calcium chloride from liquids; Treatment of liquids, Namely the extraction of potassium chloride from liquids; Treatment of liquids, Namely the extraction of sodium chloride from liquids; Treatment of liquids, Namely the extraction of ammonia from liquids; Water purification.

Abstract

A method for decomposing struvite comprises dissolving (S10) of a feed material comprising struvite in a mineral acid. Thereby a solution having an acid pH is formed. Magnesium is removed (S30) from the solution. The removing of magnesium comprises increasing (S32) a pH of the solution to a pH in the range of 4.5 to 6, precipitating (S34) magnesium compounds that do not comprise ammonium, and separating (S36) the precipitated magnesium compounds from the solution. Thereby, the solution, after the removing of magnesium, comprises an ammonium salt of the mineral acid. An arrangement for performing such a method is also disclosed. Also, a method and arrangement for recovering at least nitrogen from waste material, based on the decomposing of struvite are disclosed.

IPC Classes  ?

• C05F 7/00 - Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
• C05B 11/00 - Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes
• C02F 1/52 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
• C05B 7/00 - Fertilisers based essentially on alkali or ammonium orthophosphates
• C05B 9/00 - Fertilisers based essentially on phosphates or double phosphates of magnesium

Abstract

A method for decomposing struvite comprises dissolving (S10) of a feed material comprising struvite in a mineral acid. Thereby a solution having an acid pH is formed. Magnesium is removed (S30) from the solution. The removing of magnesium comprises increasing (S32) a pH of the solution to a pH in the range of 4.5 to 6, precipitating (S34) magnesium compounds that do not comprise ammonium, and separating (S36) the precipitated magnesium compounds from the solution. Thereby, the solution, after the removing of magnesium, comprises an ammonium salt of the mineral acid. An arrangement for performing such a method is also disclosed. Also, a method and arrangement for recovering at least nitrogen from waste material, based on the decomposing of struvite are disclosed.

IPC Classes  ?

• C05F 7/00 - Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
• C05B 11/00 - Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes
• C02F 1/52 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
• C05B 7/00 - Fertilisers based essentially on alkali or ammonium orthophosphates
• C05B 9/00 - Fertilisers based essentially on phosphates or double phosphates of magnesium

Abstract

A method for decomposing struvite comprises dissolving (S10), in sulphuric acid, of a feed material comprising struvite, thereby forming a solution. Phosphate ions are removed (S20) from the solution. Magnesium compounds are precipitated (S40) from the solution, after the removing of phosphate ions. This precipitation of magnesium compounds is caused by increasing a pH of the solution. By the precipitation of magnesium compounds a solution comprising ammonium sulphate is formed. An arrangement for performing the method is also disclosed. Also, a method for recovering at least one of nitrogen, phosphorus and potassium from waste material comprises precipitating of struvite from an initial liquid of waste material, by adding a magnesium source to said initial liquid of waste material and adjusting a pH to an alkaline pH, separating the precipitated struvite from the initial liquid of waste material and decomposing the separated struvite by a method according to the above concepts.

IPC Classes  ?

• C05F 7/00 - Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
• C05B 11/00 - Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes
• C01C 1/24 - Sulfates of ammonium
• C05B 7/00 - Fertilisers based essentially on alkali or ammonium orthophosphates
• C05B 9/00 - Fertilisers based essentially on phosphates or double phosphates of magnesium

Abstract

2 of at least 15% by weight. The treatment (230) comprises at least one of reduction of water content and addition of Ca. The treatment (230) generates a solid mix of Na Cl and KCl. The solid mix of NaCl and KCl is separated (235) from the enriched aqueous solution, giving a depleted aqueous solution comprising ions of Ca and Cl as main dissolved substances. An arrangement for recovery of salts is also disclosed.

IPC Classes  ?

• C01F 11/32 - Purification
• C02F 1/52 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
• C02F 101/12 - Halogens or halogen-containing compounds
• C02F 103/18 - Nature of the water, waste water, sewage or sludge to be treated from the wet purification of gaseous effluents

Abstract

Amethod for decomposing struvite comprises dissolving of a feed material comprising struvite (100) in HCl(11), forming an acid solution(103). Phosphorus is removed from the acid solution, forming a phosphorus-depleted solution(106). A neutralized solution (108) is formed by adding a base (107) to the phosphorus-depleted solution. Achloride salt solution(110)is formed from the neutralized solution.An arrangement (1) for decomposing struvite comprises a dissolver container(10), a phosphorus removing section(20), a neutralizer container (70) and achloride salt solution handlingsection(79). The dissolver container is configured for dissolving a feed material comprising struvite in HCl. The phosphorus removing section is configured for removing phosphorus from the acid solution. The neutralizer container is configured for forming a neutralized solution by adding a base to the phosphorus-depleted solution. The chloride salt solution handlingsection is configured for forming a chloride salt solutionfrom the neutralized solution.

IPC Classes  ?

• C02F 1/52 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
• C05F 7/00 - Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses

Abstract

A method for production of phosphate compounds comprises dissolving of a raw material comprising phosphorus, aluminium and iron, in a mineral acid. Insoluble residues from the dissolving step are separated. Iron hydroxide is added causing precipitation of phosphate compounds. The precipitated phosphate compounds are removed. The phosphate compounds are dissolved by an alkaline solution. Iron hydroxide is filtered out. Lime is added, causing precipitation of calcium phosphate. The precipitated calcium phosphate is separated. The leach solution after the separating of precipitated calcium phosphate is recycled to be used for dissolving phosphate compounds by an alkaline solution.

IPC Classes  ?

• C01B 25/32 - Phosphates of magnesium, calcium, strontium, or barium
• C01B 25/28 - Ammonium phosphates
• C01B 25/36 - Aluminium phosphates
• C01B 25/37 - Phosphates of heavy metals
• C01G 49/02 - OxidesHydroxides
• C01G 49/10 - Halides
• C01G 49/14 - Sulfates
• C01F 7/34 - Preparation of aluminium hydroxide by precipitation from solutions containing aluminium salts
• C01F 7/56 - Chlorides
• C01F 7/74 - Sulfates
• C01G 45/02 - Oxides
• C01G 49/00 - Compounds of iron
• C01G 1/12 - Sulfides
• C05B 11/12 - Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using aqueous hydrochloric acid
• C05B 11/16 - Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using alkaline lyes
• C05F 7/00 - Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
• C02F 11/00 - Treatment of sludgeDevices therefor
• C01F 11/46 - Sulfates
• C02F 1/66 - Treatment of water, waste water, or sewage by neutralisationTreatment of water, waste water, or sewage pH adjustment
• C02F 101/10 - Inorganic compounds

Goods & Services

Chemicals used in industry and science; chemicals used in agriculture, horticulture and forestry, except fungicides, herbicides, insecticides and parasiticides; manures

Abstract

A method for recovery of salts comprises providing (210) of an initial aqueous solution comprising ions of Na, K, Cl and optionally Ca or a material which when brought in contact with water forms an initial aqueous solution comprising ions of Na, K, Cl and optionally Ca. The start material is treated (230) into an enriched aqueous solution having a concentration of CaCl2 of at least 15% by weight. The treatment (230) comprises at least one of reduction of water content and addition of Ca. The treatment (230) generates a solid mix of Na Cl and KCl. The solid mix of NaCl and KCl is separated (235) from the enriched aqueous solution, giving a depleted aqueous solution comprising ions of Ca and Cl as main dissolved substances. An arrangement for recovery of salts is also disclosed.

IPC Classes  ?

• B09B 3/00 - Destroying solid waste or transforming solid waste into something useful or harmless
• C01D 3/08 - Preparation by working up natural or industrial salt mixtures or siliceous minerals
• C01F 11/32 - Purification

Abstract

A method for recovery of salts comprises providing (210) of an initial aqueous solution comprising ions of Na, K, Cl and optionally Ca or a material which when brought in contact with water forms an initial aqueous solution comprising ions of Na, K, Cl and optionally Ca. The start material is treated (230) into an enriched aqueous solution having a concentration of CaCl2 of at least 15% by weight. The treatment (230) comprises at least one of reduction of water content and addition of Ca. The treatment (230) generates a solid mix of Na Cl and KCl. The solid mix of NaCl and KCl is separated (235) from the enriched aqueous solution, giving a depleted aqueous solution comprising ions of Ca and Cl as main dissolved substances. An arrangement for recovery of salts is also disclosed.

IPC Classes  ?

• B09B 3/00 - Destroying solid waste or transforming solid waste into something useful or harmless
• C01D 3/04 - Chlorides
• C01F 11/32 - Purification

Goods & Services

Chemical substances, chemical materials and chemical preparations, and natural elements (chemicals) for industrial use; industrial chemicals; salts for industrial purposes; fertilisers, and chemicals for use in agriculture, horticulture and forestry; salts [fertilisers]; potassium chloride; potassium chloride fertilizer; potassium sulphate; potassium sulphate fertilizer; potassium salts, other than for medical purposes; lime chloride; sodium chloride; ammonia; phosphorus; phosphates; calcium phosphates; ammonium phosphate; ammonium salts; ammonium sulphate; aluminium salts; aluminium hydrate; aluminium chloride; aluminium sulphate; rare earth metals; iron salts; iron hydroxide; iron chloride; ferrous sulphate; alkaline metals; agglutinants for plaster; fly ash for general manufacturing use; fertilisers. Recycling services; recycling of waste; treatment of waste and garbage; reclamation (recycling) of material from waste; treatment [reclamation] of material from waste; treatment of material from waste; treatment [reclamation] of material from hazardous products; treatment of ashes; recycling of minerals; recycling of metals; recycling of valuable materials; information, advice and consultancy services relating to the recycling of waste and trash; extraction of elements contained in waste residues; extraction of minerals contained in waste residues; treatment of liquids, namely extraction of salts from liquids; treatment of liquids, namely extraction of calcium chloride from liquids; treatment of liquids, namely extraction of potassium chloride from liquids; treatment of liquids, namely extraction of sodium chloride from liquids; treatment of liquids, namely extraction of ammonia from liquids; water purification. Scientific and technological services and research and design relating thereto; industrial analysis and research services; research relating to mineral resources; research relating to raw materials; research relating to raw material sources; research relating to waste; technical consultancy in the field of environmental science and environmental engineering.

Goods & Services

Chemical substances, chemical materials and chemical preparations, and natural chemical elements, all for industrial use; industrial chemicals; salts for industrial purposes; fertilisers, and chemicals for use in agriculture, horticulture and forestry; salts being fertilisers; potassium chloride; potassium chloride fertilizer; potassium sulphate; potassium sulphate fertilizer; potassium salts, other than for medical purposes; lime chloride; sodium chloride; ammonia for industrial purposes; phosphorus; phosphate fertilisers, feed phosphate; calcium phosphates; ammonium phosphate; ammonium salts; ammonium sulphate; aluminium salts; aluminium hydrate; aluminium chloride; aluminium sulphate; rare earth metals; iron salts; iron hydroxide; iron chloride; ferrous sulphate; alkaline metals; agglutinants for plaster; fly ash for general manufacturing use; fertilisers Recycling services; Recycling of waste; Treatment of waste and garbage; Recycling, namely, reclamation of material from waste; Waste treatment, namely, reclamation of material from waste; Treatment of material from waste; Hazardous waste treatment services, namely reclamation of material from hazardous products; Treatment of ashes; Recycling of minerals; Recycling of metals; Recycling of valuable materials; Information, advice and consultancy services relating to the recycling of waste and trash; Waste processing, namely, extraction of elements contained in waste residues; Waste processing, namely, extraction of minerals contained in waste residues; Treatment of liquids, namely extraction of salts from liquids; Treatment of liquids, namely extraction of calcium chloride from liquids; Treatment of liquids, namely extraction of potassium chloride from liquids; Treatment of liquids, namely extraction of sodium chloride from liquids; Treatment of liquids, namely extraction of ammonia from liquids; Water purification Scientific and technological services within the field of extraction and recovery of elements from ashes, namely, designing recovery protocols, machinery and processes; Industrial analysis and research services in the field of extraction and recovery of elements from ashes; Research relating to mineral resources; Research relating to raw materials; Research relating to raw material sources; Research relating to waste; Technical consultancy in the field of environmental science and environmental engineering

Goods & Services

Chemical substances, chemical materials and chemical preparations, and natural elements; Industrial chemicals; Salts for industrial purposes; Fertilisers, and chemicals for use in agriculture, horticulture and forestry; Salts [fertilisers]; Potassium chloride; Potassium chloride fertilizer; Potassium sulphate; Potassium sulphate fertilizer; Potassium salts, other than for medical purposes; Lime chloride; Sodium chloride; Ammonia; Phosphorus; Phosphates; Calcium phosphates; Ammonium phosphate; Ammonium salts; Ammonium sulphate; Aluminium salts; Aluminium hydrate; Aluminium chloride; Aluminium sulphate; Rare earth metals; Iron salts; Iron hydroxide; Iron chloride; Ferrous sulphate; Alkaline metals; Agglutinants for plaster; Fly ash for general manufacturing use; Fertilisers. Metals. Precious metals. Gypsum; Building materials, not of metal. Recycling services; Recycling of waste; Treatment of waste and garbage; Reclamation of material from waste; Treatment [reclamation] of material from waste; Treatment of material from waste; Treatment [reclamation] of material from hazardous products; Treatment of ashes; Recycling of minerals; Recycling of metals; Recycling of valuable materials; Information, advice and consultancy services relating to the recycling of waste and trash; Extraction of elements contained in waste residues; Extraction of minerals contained in waste residues; Treatment of liquids, namely extraction of salts from liquids; Treatment of liquids, namely extraction of calcium chloride from liquids; Treatment of liquids, namely extraction of potassium chloride from liquids; Treatment of liquids, namely extraction of sodium chloride from liquids; Treatment of liquids, namely extraction of Ammonia from liquids; Water purification. Scientific and technological services and research and design relating thereto; Industrial analysis and research services; Research relating to mineral resources; Research relating to raw materials; Research relating to raw material sources; Research relating to waste; Technical consultancy in the field of environmental science and environmental engineering.

Abstract

A method for concentration of phosphate compounds comprises dissolving (205) of sludge ash in hydrochloric acid. Insoluble residues are separated (210), thereby forming a first leach solution. A mole ratio of phosphorus to a sum of ferric iron and aluminum in the first leach solution is controlled (215) to be larger than 1. A base is added (220) to the first leach solution in an amount causing precipitation of phosphate compounds. The precipitated phosphate compounds are removed (225) from the first leach solution. Sulphuric acid is added (240) to the first leach solution, causing precipitation of sulphate compounds. The precipitated sulphate compounds are separated (245) from the first leach solution. At least a part of the leach solution is recycled (248) as the hydrochloric acid used for the dissolving of sludge ash. Further methods for processing the precipitated phosphate compounds are presented as well as arrangements for performing the methods.

IPC Classes  ?

• C01B 25/32 - Phosphates of magnesium, calcium, strontium, or barium
• C05B 11/12 - Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using aqueous hydrochloric acid
• C05B 11/16 - Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using alkaline lyes
• C05F 7/00 - Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
• C02F 11/00 - Treatment of sludgeDevices therefor
• C01B 25/28 - Ammonium phosphates
• C01B 25/36 - Aluminium phosphates
• C01B 25/37 - Phosphates of heavy metals
• C01G 49/02 - OxidesHydroxides
• C01G 49/10 - Halides
• C01G 49/14 - Sulfates
• C01F 7/34 - Preparation of aluminium hydroxide by precipitation from solutions containing aluminium salts
• C01F 7/56 - Chlorides
• C01F 7/74 - Sulfates
• C01G 45/02 - Oxides
• C01G 49/00 - Compounds of iron
• C01G 1/12 - Sulfides
• C01F 11/46 - Sulfates
• C02F 1/66 - Treatment of water, waste water, or sewage by neutralisationTreatment of water, waste water, or sewage pH adjustment
• C02F 101/10 - Inorganic compounds

Abstract

An arrangement (100) for production of fully soluble, pure and well defined mono- or di-ammonium phosphates, comprises an extraction section (10), a stripping section (20) and end treatment arrangements (90). The extraction section performs a liquid-liquid extraction of phosphate between a feed liquid (1) comprising phosphoric acid and being essentially free from nitrate ions, and a solvent (5) having a solubility in water of less than 2%. The stripping section performs a liquid-liquid extraction of phosphate between solvent loaded with phosphate and a strip solution (4). The solvent depleted in phosphate is recirculated to the extraction section for further extraction of phosphate. The strip solution is an aqueous ammonium phosphate solution, wherein at least 80% of the ammonium phosphate is monoammonium phosphate and/or wherein the solvent is a water-immiscible alcohol. The end treatment arrangements comprise a source of ammonia (60), an adding arrangement (70), a cooling arrangement (50), a precipitate remover (40) and a recirculation system (80).

IPC Classes  ?

• C05B 7/00 - Fertilisers based essentially on alkali or ammonium orthophosphates
• C01B 25/28 - Ammonium phosphates
• B01J 19/24 - Stationary reactors without moving elements inside
• C01B 25/46 - Preparation involving solvent-solvent extraction
• B01D 11/04 - Solvent extraction of solutions which are liquid
• B01D 9/00 - Crystallisation
• C05B 11/10 - Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using orthophosphoric acid

Abstract

A method for concentration of phosphate compounds comprises dissolving (205) of sludge ash in hydrochloric acid. Insoluble residues are separated (210), thereby forming a first leach solution. A mole ratio of phosphorus to a sum of ferric iron and aluminium in the first leach solution is controlled (215) to be larger than 1. A base is added (220) to the first leach solution in an amount causing precipitation of phosphate compounds. The precipitated phosphate compounds are removed (225) from the first leach solution. Sulphuric acid is added (240) to the first leach solution, causing precipitation of sulphate compounds. The precipitated sulphate compounds are separated (245) from the first leach solution. At least a part of the leach solution is recycled (248) as the hydrochloric acid used for the dissolving of sludge ash. Further methods for processing the precipitated phosphate compounds are presented as well as arrangements for performing the methods.

IPC Classes  ?

• C02F 11/00 - Treatment of sludgeDevices therefor
• C01B 25/22 - Preparation by reacting phosphate containing material with an acid, e.g. wet process
• C01B 25/238 - Cationic impurities
• C01B 25/46 - Preparation involving solvent-solvent extraction
• C05B 11/12 - Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using aqueous hydrochloric acid
• C05B 11/16 - Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using alkaline lyes
• C05F 7/00 - Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses

Abstract

A method for concentration of phosphate compounds comprises dissolving (205) of sludge ash in hydrochloric acid. Insoluble residues are separated (210), thereby forming a first leach solution. A mole ratio of phosphorus to a sum of ferric iron and aluminium in the first leach solution is controlled (215) to be larger than 1. A base is added (220) to the first leach solution in an amount causing precipitation of phosphate compounds. The precipitated phosphate compounds are removed (225) from the first leach solution. Sulphuric acid is added (240) to the first leach solution, causing precipitation of sulphate compounds. The precipitated sulphate compounds are separated (245) from the first leach solution. At least a part of the leach solution is recycled (248) as the hydrochloric acid used for the dissolving of sludge ash. Further methods for processing the precipitated phosphate compounds are presented as well as arrangements for performing the methods.

IPC Classes  ?

• C02F 11/00 - Treatment of sludgeDevices therefor
• C01B 25/22 - Preparation by reacting phosphate containing material with an acid, e.g. wet process
• C01B 25/238 - Cationic impurities
• C01B 25/46 - Preparation involving solvent-solvent extraction
• C05B 11/12 - Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using aqueous hydrochloric acid
• C05B 11/16 - Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using alkaline lyes
• C05F 7/00 - Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses

Abstract

An arrangement (100) for production of fully soluble, pure and well defined mono-or di-ammonium phosphates, comprises an extraction section (10), a stripping section (20) and end treatment arrangements (90). The extraction section performs a liquid-liquid extraction of phosphate between a feed liquid (1) comprising phosphoric acid and being essentially free from nitrate ions, and a solvent (5) having a solubility in water of less than 2%. The stripping section performs a liquid-liquid extraction of phosphate between solvent loaded with phosphate and a strip solution (4). The solvent depleted in phosphate is recirculated to the extraction section for further extraction of phosphate. The strip solution is an aqueous ammonium phosphate solution, wherein at least 80% of the ammonium phosphate is monoammonium phosphate and/or wherein the solvent is a water-immiscible alcohol. The end treatment arrangements comprise a source of ammonia (60), an adding arrangement (70), a cooling arrangement (50), a precipitate remover (40) and a recirculation system (80).

IPC Classes  ?

• C01B 25/28 - Ammonium phosphates
• B01D 11/04 - Solvent extraction of solutions which are liquid
• C01B 25/46 - Preparation involving solvent-solvent extraction
• C05B 7/00 - Fertilisers based essentially on alkali or ammonium orthophosphates
• C05B 11/08 - Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using sulfuric acid
• C05C 3/00 - Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor

Abstract

An arrangement (100) for production of fully soluble, pure and well defined mono-or di-ammonium phosphates, comprises an extraction section (10), a stripping section (20) and end treatment arrangements (90). The extraction section performs a liquid-liquid extraction of phosphate between a feed liquid (1) comprising phosphoric acid and being essentially free from nitrate ions, and a solvent (5) having a solubility in water of less than 2%. The stripping section performs a liquid-liquid extraction of phosphate between solvent loaded with phosphate and a strip solution (4). The solvent depleted in phosphate is recirculated to the extraction section for further extraction of phosphate. The strip solution is an aqueous ammonium phosphate solution, wherein at least 80% of the ammonium phosphate is monoammonium phosphate and/or wherein the solvent is a water-immiscible alcohol. The end treatment arrangements comprise a source of ammonia (60), an adding arrangement (70), a cooling arrangement (50), a precipitate remover (40) and a recirculation system (80).

IPC Classes  ?

• C01B 25/28 - Ammonium phosphates
• B01D 11/04 - Solvent extraction of solutions which are liquid
• C01B 25/46 - Preparation involving solvent-solvent extraction
• C05B 7/00 - Fertilisers based essentially on alkali or ammonium orthophosphates
• C05B 11/08 - Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using sulfuric acid
• C05C 3/00 - Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor

Goods & Services

Chemicals used in industry, science, as well as in agriculture, horticulture and forestry; manures.

Abstract

Phosphorus containing material is treated with mineral acid to form a leach-solution (7) comprising of trivalent aluminum, phosphorus and optionally trivalent iron. Aluminum and possibly iron is extracted by adsorbing in a scavenger (22) having an affinity for cations and by releasing aluminum and iron into a strip-solution during regeneration. The regeneration is performed with hydrochloric acid (31). Anionic metal chloride complexes are extracted from the hydrochloric acid strip-solution (32) by adsorbing in a scavenger (42) having affinity for anionic metal chlorides. Metal chlorides are recovered from the loaded scavenger (46) by elution with water (49). Gaseous hydrogen chloride (38) is added to the raffinate (33) from the metal chloride extraction. Crystalline aluminum chloride hexahydrate (37) is separated. The hydrochloric acid strip-solution (31) is recycled and used for stripping a scavenger (26) loaded with aluminum and/or iron. The depleted ash leach-solution (9) is treated for phosphorus recovery and preferably reused for dissolution of a phosphorus containing material.

IPC Classes  ?

• C02F 11/00 - Treatment of sludgeDevices therefor
• C01F 7/56 - Chlorides
• C01G 49/10 - Halides
• C02F 1/52 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities

Abstract

A method for production of ammonium phosphates comprises providing (210) of a phosphorus-loaded water immiscible liquid phase, adding (212) of anhydrous ammonia to the water immiscible liquid phase, precipitating (214) of mono-ammonium phosphate and/or di-ammonium phosphate from the water immiscible liquid phase and extracting (218) of the precipitated mono-ammonium phosphate and/or di-ammonium phosphate from the water immiscible liquid phase. The method further comprises controlling (216) of a temperature of the water immiscible liquid phase during the adding (212) and precipitating (214) to a predetermined temperature interval.

IPC Classes  ?

• C01B 25/28 - Ammonium phosphates
• B01D 11/04 - Solvent extraction of solutions which are liquid
• C01B 25/46 - Preparation involving solvent-solvent extraction
• C05B 11/08 - Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using sulfuric acid
• C05B 7/00 - Fertilisers based essentially on alkali or ammonium orthophosphates
• C05C 3/00 - Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor

Goods & Services

Chemicals used in industry, science, as well as in agriculture, horticulture and forestry; Manures. Treatment of materials; Production of inorganic salts; Processes for the extraction of substances from solutions from industrial process flows for the production of fertilisers. Scientific and technological services and research and design relating thereto; Industrial analysis and research services; Development of treatment processes and application of technology in the field of chemical engineering; Development of treatment processes and application of technology for the production of fertilisers.

Abstract

Phosphorous ions are extracted (210) from solutions by adsorbing phosphorous ions in a scavenger and by releasing the phosphorous ions into an eluate during regeneration (230) of the scavenger. The regeneration (230) is performed by ammonia. Phosphate anions are precipitated (262) in form of tri-ammonium phosphate upon introduction (260) of excess amounts of ammonia. The ammonia remaining in solution after the precipitation of tri- ammonium phosphate is reused (266) for regenerating the scavenger.

IPC Classes  ?

• C01B 25/234 - PurificationStabilisationConcentration
• B01J 49/00 - Regeneration or reactivation of ion-exchangersApparatus therefor
• C01B 25/222 - Preparation by reacting phosphate containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen
• C02F 1/42 - Treatment of water, waste water, or sewage by ion-exchange
• C02F 11/00 - Treatment of sludgeDevices therefor
• C05F 1/00 - Fertilisers made from animal corpses, or parts thereof
• C05F 7/00 - Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses