PROCESS FOR REMOVING SELENIUM FROM WASTEWATER USING BIOLOGICAL REDUCTION AND SURFACE COMPLEXATION

PROCESS FOR REMOVING SELENIUM FROM WASTEWATER USING BIOLOGICAL REDUCTION AND SURFACE COMPLEXATION

A process for removing selenium from water is described. Through a biological reduction process, selenium +6 species are reduced to selenium +4 species. A coagulant is mixed with the water and as a result, solids having complexation binding sites are formed. The reduced selenium +4 species is adsorb...

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Hauptverfasser: DE LADURANTAYE-NOEL, Myriam, LALIBERTE, Marc
Format: Patent
Sprache:eng ; fre ; ger
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CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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LALIBERTE, Marc
description A process for removing selenium from water is described. Through a biological reduction process, selenium +6 species are reduced to selenium +4 species. A coagulant is mixed with the water and as a result, solids having complexation binding sites are formed. The reduced selenium +4 species is adsorbed onto the complexation binding sites of the solids. Thereafter, the solids having adsorbed selenium +4 species is separated from the water and ultimately separate from the process. The resulting effluent is subjected to a second biological treatment under aerobic conditions which converts residual selenium and organo-selenium to selenate.
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TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
title PROCESS FOR REMOVING SELENIUM FROM WASTEWATER USING BIOLOGICAL REDUCTION AND SURFACE COMPLEXATION
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