The invention comprises a process for remediation of soil comprising PFAS. The process comprises steps a)-d). In step a) sludge and a first gaseous stream are heated in a first spouting bed incinerator, thereby generating a raw material for a ceramic article and a first gaseous stream comprising a first flue gas, the first gaseous stream comprising the first flue gas having a temperature of at least 800° C. In step b) the first gaseous stream comprising the first flue gas is heat exchanged with a second gaseous stream in an air-to-air heat exchanger, thereby generating a second gaseous stream with a temperature of at least 500° C. In step c) the soil comprising PFAS is contacted with the second gaseous stream in a dryer, thereby evaporating the PFAS from the soil and generating clean soil and a second gaseous stream comprising PFAS. In step d) the second gaseous stream comprising PFAS is further heated to a temperature of at least 1000° C. in a second spouting bed incinerator, thereby generating a second gaseous stream comprising destructed PFAS.
B09C 1/06 - Reclamation of contaminated soil thermally
B01D 53/02 - Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography
B01D 53/14 - Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption
B01D 53/76 - Gas phase processes, e.g. by using aerosols
C02F 11/06 - Treatment of sludge; Devices therefor by oxidation
The invention comprises a process for remediation of soil comprising PFAS. The process comprises steps a) ? d). In step a) sludge and a first gaseous stream are heated in a first spouting bed incinerator, thereby generating a raw material for a ceramic article and a first gaseous stream comprising a first flue gas, the first gaseous stream comprising the first flue gas having a temperature of at least 800 °C. In step b) the first gaseous streamcomprising the first flue gas is heat exchanged with a second gaseous stream in an air-to-air heat exchanger, thereby generating a second gaseous stream with a temperature of at least 500 °C. In step c) the soil comprising PFAS is contacted with the second gaseous stream in a dryer, thereby evaporating the PFAS from the soil and generating clean soil and a second gaseous stream comprising PFAS. In step d) the second gaseous stream comprising PFAS is further heated to a temperature of at least 1000 °C in a second spouting bed incinerator, thereby generating a second gaseous stream comprising destructed PFAS.
B09C 1/06 - Reclamation of contaminated soil thermally
C02F 11/13 - Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
B09B 3/40 - Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
F23G 7/14 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of specific waste or low grade fuels, e.g. chemicals of contaminated soil, e.g. soil contaminated by oil
The invention comprises a process for remediation of soil comprising PFAS. The process comprises steps a) – d). In step a) sludge and a first gaseous stream are heated in a first spouting bed incinerator, thereby generating a raw material for a ceramic article and a first gaseous stream comprising a first flue gas, the first gaseous stream comprising the first flue gas having a temperature of at least 800 °C. In step b) the first gaseous streamcomprising the first flue gas is heat exchanged with a second gaseous stream in an air-to-air heat exchanger, thereby generating a second gaseous stream with a temperature of at least 500 °C. In step c) the soil comprising PFAS is contacted with the second gaseous stream in a dryer, thereby evaporating the PFAS from the soil and generating clean soil and a second gaseous stream comprising PFAS. In step d) the second gaseous stream comprising PFAS is further heated to a temperature of at least 1000 °C in a second spouting bed incinerator, thereby generating a second gaseous stream comprising destructed PFAS.
B09C 1/06 - Reclamation of contaminated soil thermally
B09B 3/40 - Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
C02F 11/13 - Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
C04B 35/622 - Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
C04B 35/626 - Preparing or treating the powders individually or as batches
F23G 7/04 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of specific waste or low grade fuels, e.g. chemicals of waste liquors, e.g. sulfite liquors
F23G 7/14 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of specific waste or low grade fuels, e.g. chemicals of contaminated soil, e.g. soil contaminated by oil
F23G 5/30 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of waste or low-grade fuels with combustion in a fluidised bed
B09B 101/90 - Soil, e.g. excavated soil from construction sites
4.
Process for Preparing a Ceramic Article Containing Sludge
The invention relates to a process for the preparation of a ceramic article containing industrial, domestic or natural sludge, the ceramic article, and treated domestic or natural sludge suitable as raw material for the production of the ceramic article. The sludge (which definition excludes digestate that is obtained from a Municipal Solid Waste (MSW) process comprising liquefaction of the organic fraction of MSW by addition of one or more enzymes) has been pretreated by a process comprising the optional step of drying the sludge to a moisture content of at most 10% by weight, resulting in dried sludge, and heating the sludge or dried sludge in a spouting bed incinerator and reducing the content of organic matter to less than 5% by weight. The invention furthermore relates to a process wherein the pretreatment comprises using the domestic or natural sludge as a food source for larvae.
The invention relates to a process for the preparation of a ceramic article containing industrial, domestic or natural sludge, the ceramic article, and treated domestic or natural sludge suitable as raw material for the production of the ceramic article. The sludge (which definition excludes digestate that is obtained from a Municipal Solid Waste (MSW) process comprising liquefaction of the organic fraction of MSW by addition of one or more enzymes) has been pretreated by a process comprising the optional step of drying the sludge to a moisture content of at most 10% by weight, resulting in dried sludge, and heating the sludge or dried sludge in a spouting bed incinerator and reducing the content of organic matter to less than 5% by weight. The invention furthermore relates to a process wherein the pretreatment comprises using the domestic or natural sludge as a food source for larvae.
C04B 35/01 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides
C04B 35/622 - Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
C04B 35/626 - Preparing or treating the powders individually or as batches
C04B 35/63 - Preparing or treating the powders individually or as batches using additives specially adapted for forming the products
The invention relates to a process for the preparation of a ceramic article containing industrial, domestic or natural sludge, the ceramic article, and treated domestic or natural sludge suitable as raw material for the production of the ceramic article. The sludge (which definition excludes digestate that is obtained from a Municipal Solid Waste (MSW) process comprising liquefaction of the organic fraction of MSW by addition of one or more enzymes) has been pretreated by a process comprising the optional step of drying the sludge to a moisture content of at most 10% by weight, resulting in dried sludge, and heating the sludge or dried sludge in a spouting bed incinerator and reducing the content of organic matter to less than 5% by weight. The invention furthermore relates to a process wherein the pretreatment comprises using the domestic or natural sludge as a food source for larvae.
C04B 35/01 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides
C04B 35/622 - Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
C04B 35/626 - Preparing or treating the powders individually or as batches
C04B 35/63 - Preparing or treating the powders individually or as batches using additives specially adapted for forming the products
patents
