Liquid purification or separation – Processes – Treatment by living organism
Patent
1984-06-01
1985-05-28
Wyse, Thomas
Liquid purification or separation
Processes
Treatment by living organism
210616, 210912, C02F 334
Patent
active
045199132
ABSTRACT:
A process is provided for reducing the concentration of water soluble ionic selenium species in aqueous waste solutions containing the same. The process comprises passing said waste solution through a treatment zone containing a porous matrix on which are retained populations of at least one bacteria of the genus Clostridium. The passing of said aqueous solution through said treatment zone is carried out at predetermined rates of flow, and contact between said solution and said bacteria is conducted under anaerobic conditions and at predetermined pH and temperature levels. The process provides for the conversion of the water soluble ionic selenium species to water insoluble selenium metal, which metal is retained on the porous matrix and can be recovered therefrom.
REFERENCES:
patent: 4332904 (1982-06-01), Kurane et al.
patent: 4405464 (1983-09-01), Baldwin et al.
"Removal of Selenium from Drinking Water-State of the Art", Thomas J. Sorg and Gary S. Logdson; Symposium on Selenium-Tellurium in the Environment, 5/11-13, 1976, pp. 114-128.
Baldwin Roger A.
Kauffman Jim W.
Laughlin William C.
Stauter John C.
Addison William G.
Kerr-McGee Corporation
Ward John P.
Wyse Thomas
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