Liquid purification or separation – Processes – Treatment by living organism
Patent
1992-07-28
1993-09-21
Upton, Christopher
Liquid purification or separation
Processes
Treatment by living organism
210621, 210631, 210180, 210188, 2101951, 210901, 210916, 210718, 435262, 435266, C02F 120, C02F 302
Patent
active
052465845
ABSTRACT:
A method and apparatus for destroying organic contaminants, such as trichloroethylene, in aqueous liquids, such as groundwater, utilizing steam stripping integrated with biodegradation. The contaminated aqueous liquid is fed into a steam stripper causing the volatilization of essentially all of the organic contaminants and a portion of the aqueous liquid. The majority of the aqueous liquid is discharged from the steam stripper. The volatilized vapors are then condensed to the liquid phase and introduced into a bioreactor. The bioreactor contains methanotrophic microorganisms which convert the organic contaminants into mainly carbon dioxide. The effluent from the bioreactor is then recycled back to the steam stripper for further processing.
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This invention was made with Government support under Contract No. DE-AC05-84OR21400 awarded by the U.S. Department of Energy to Martin Marietta Energy Systems, Inc. and the Government has certain rights in this invention.
Donaldson Terrence L.
Wilson James H.
Adams H. W.
Martin Marietta Energy Systems Inc.
Smirman P. H.
Upton Christopher
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