Liquid purification or separation – Processes – Treatment by living organism
Patent
1981-07-09
1983-08-30
Castel, Benoit
Liquid purification or separation
Processes
Treatment by living organism
210622, 210747, 210170, 210901, 405128, 435262, 435281, 166246, C02F 300, C10G 3200
Patent
active
044015690
ABSTRACT:
A method and apparatus for treating ground and ground water contaminated with hydrocarbon and halogenated hydrocarbon compounds. Treatment of contaminated water removed from the ground is accomplished by microorganisms which consume the contaminants. Growth of microorganisms is enhanced under controlled conditions by addition of nutrients and gases such as oxygen, nitrogen, carbon dioxide or a combination of these and other gases to the contaminated water. Treated water carrying microorganisms, nutrients and gases is returned for recirculation through the contaminated area of ground to leach out and biodegrade the contaminants deposited in the ground. Microorganism activity is also enhanced in the ground by injection of nutrients and oxygen or other gases into the ground and ground water in the contaminated area.
REFERENCES:
patent: 3846290 (1974-11-01), Raymond
patent: 3995436 (1976-12-01), Diggs
patent: 4167973 (1979-09-01), Forte et al.
patent: 4288174 (1981-09-01), Laws
Jhaveri Vidyut
Mazzacca Alfred J.
Snyder Harold
Castel Benoit
Groundwater Decontamination Systems, Inc.
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