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Orrie Olsen Phones & Addresses

  • Walnut Creek, CA
  • Pleasant Hill, CA

Publications

Us Patents

Method For Removing Toxic Substances From Industrial And Agricultural Waste Water

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US Patent:
52000826, Apr 6, 1993
Filed:
Jul 2, 1991
Appl. No.:
7/724993
Inventors:
Orrie C. Olsen - Walnut Creek CA
Peter F. Santina - Walnut Creek CA
Assignee:
Santina Water Company - Concord CA
International Classification:
C02F 148
C02F 170
US Classification:
210667
Abstract:
A method and system for removing toxic substances such as selenium from industrial and agricultural drain water, and particularly refinery effluent liquor, achieves very high removal of the toxic substance economically, by a chemical reduction process. Preferably, the effluent liquor is first filtered, which ordinarily is effective to remove selenium suspended in the liquor. Next the liquor is heated, preferably to about 150. degree. F. , and a reducing agent such as finely powdered iron is added to bring, for example, the selenium down from a +6 valence to +4 and lower valences. Sulfur is added to the slurry to greatly improve the effectiveness of the iron in reducing the liquor. The slurry is constantly agitated. After a reaction time which may be about 15 minutes, an oxidizing agent is added, with the temperature of the slurry then raised to at least about 180. degree. , with continued agitation.

Method For Removing Toxic Metals From Agricultural Drain Water

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US Patent:
49405497, Jul 10, 1990
Filed:
Jan 31, 1989
Appl. No.:
7/304497
Inventors:
Orrie C. Olsen - Walnut Creek CA
Peter F. Santina - Walnut Creek CA
Assignee:
Santina Water Company - Concord CA
International Classification:
C02F 148
C02F 170
US Classification:
210695
Abstract:
A method and system for removing toxic substances such as selenium and molybdenum from agricultural irrigation water achieves nearly 100% removal of the toxic substance economically, by a chemical reduction process. The process is particulary efficacious for removing naturally occurring selenium and molybdenum from irrigation water which has seeped through the ground and taken compounds of these metals into solution. Preferably, the drain tile water solution is first concentrated, to about 30% dissolved solids. This may be economically accomplished by on site evaporation in an open pond which is impermeable to seepage. Next the concentrated brine solution is heated, preferably to about 150. degree. F. , and a reducing agent such as finely powdered iron is added to bring, for example, the selenium down from a +6 valence to +4 and lower valences. Wettable sulfur is added to the slurry to greatly improve the effectiveness of the iron in reducing the solution.
Orrie C Olsen from Walnut Creek, CADeceased Get Report