Abstract

The present disclosure concerns processes for removal of nitrate from nitrate-rich brines, typically selective removal that permits reclaiming the nitrate after such removal.

IPC Classes  ?

• C01B 21/42 - Preparation from nitrates
• C01B 21/02 - Preparation of nitrogen
• C02F 1/20 - Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• C02F 101/16 - Nitrogen compounds, e.g. ammonia

Abstract

The present disclosure concerns processes for removal of nitrate from nitrate-rich brines, typically selective removal that permits reclaiming the nitrate after such removal.

IPC Classes  ?

• C02F 1/02 - Treatment of water, waste water, or sewage by heating
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• C02F 1/66 - Treatment of water, waste water, or sewage by neutralisationTreatment of water, waste water, or sewage pH adjustment
• C02F 1/70 - Treatment of water, waste water, or sewage by reduction
• C02F 101/16 - Nitrogen compounds, e.g. ammonia
• C02F 103/06 - Contaminated groundwater or leachate
• C02F 103/10 - Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
• C02F 103/34 - Nature of the water, waste water, sewage or sludge to be treated from the chemical industry not provided for in groups

Abstract

The present disclosure concerns processes for removal of nitrate from nitrate-rich brines, typically selective removal that permits reclaiming the nitrate after such removal.

IPC Classes  ?

• C02F 1/02 - Treatment of water, waste water, or sewage by heating
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• C02F 1/70 - Treatment of water, waste water, or sewage by reduction
• C02F 101/16 - Nitrogen compounds, e.g. ammonia
• C02F 103/06 - Contaminated groundwater or leachate
• C02F 103/10 - Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
• C02F 103/34 - Nature of the water, waste water, sewage or sludge to be treated from the chemical industry not provided for in groups
• C02F 1/66 - Treatment of water, waste water, or sewage by neutralisationTreatment of water, waste water, or sewage pH adjustment

Abstract

The present disclosure concerns processes for regenerating organocations from perchlorate-rich waste products, more specifically transformation of water-insoluble organocation-perchlorate salt, originating from perchlorate-removal water treatment processes, into a water-soluble perchlorate salt for reusing same.

IPC Classes  ?

• C02F 1/52 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
• C01B 11/18 - Perchlorates
• C02F 1/04 - Treatment of water, waste water, or sewage by heating by distillation or evaporation
• C07C 209/86 - Separation
• C07C 211/63 - Quaternary ammonium compounds having quaternised nitrogen atoms bound to acyclic carbon atoms

Abstract

The present disclosure concerns processes for regenerating organocations from perchlorate-rich waste products, more specifically transformation of water-insoluble organocation-perchlorate salt, originating from perchlorate-removal water treatment processes, into a water-soluble perchlorate salt for reusing same.

IPC Classes  ?

• C02F 1/26 - Treatment of water, waste water, or sewage by extraction
• C02F 1/52 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
• C07C 209/12 - Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of functional groups by amino groups by substitution of halogen atoms with formation of quaternary ammonium compounds
• C07C 209/86 - Separation
• C07C 211/62 - Quaternary ammonium compounds
• C02F 1/04 - Treatment of water, waste water, or sewage by heating by distillation or evaporation
• C02F 1/66 - Treatment of water, waste water, or sewage by neutralisationTreatment of water, waste water, or sewage pH adjustment
• C02F 101/12 - Halogens or halogen-containing compounds

Abstract

The invention provides processes for purification of aqueous industrial liquids from perchlorate ions by reducing perchlorate ion concentration or by precipitating a water-insoluble perchlorate salts.

IPC Classes  ?

• C02F 1/52 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
• B01D 21/01 - Separation of suspended solid particles from liquids by sedimentation using flocculating agents
• C02F 1/38 - Treatment of water, waste water, or sewage by centrifugal separation
• B01D 37/00 - Processes of filtration
• C02F 1/54 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
• C02F 1/00 - Treatment of water, waste water, or sewage
• B03D 3/00 - Differential sedimentation
• C02F 1/76 - Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
• B01D 21/26 - Separation of sediment aided by centrifugal force
• C07C 211/00 - Compounds containing amino groups bound to a carbon skeleton
• C07C 215/00 - Compounds containing amino and hydroxy groups bound to the same carbon skeleton
• C02F 1/68 - Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
• C02F 1/58 - Treatment of water, waste water, or sewage by removing specified dissolved compounds
• C02F 1/70 - Treatment of water, waste water, or sewage by reduction
• C02F 101/12 - Halogens or halogen-containing compounds
• C02F 103/00 - Nature of the water, waste water, sewage or sludge to be treated
• C02F 103/06 - Contaminated groundwater or leachate
• C02F 103/32 - Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters

Abstract

The invention provides processes for purification of aqueous industrial liquids from perchlorate ions by reducing perchlorate ion concentration or by precipitating a water- insoluble perchlorate salts.

IPC Classes  ?

• 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 1/70 - Treatment of water, waste water, or sewage by reduction

Abstract

Activated carbon modified by a cationic or anionic modifier or by a chelant is used as sorbent for removing heavy metal complexes and anionic and/or cationic inorganic contaminants and optionally organic contaminants from a fluid.

IPC Classes  ?

• B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
• B01J 20/32 - Impregnating or coating
• B01J 39/24 - Carbon, coal or tar
• B01J 41/18 - Carbon, coal or tar
• B01J 20/34 - Regenerating or reactivating
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption