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Title: Bioremediation of contaminated groundwater

Abstract

Disclosed is an apparatus and method for in situ remediation of contaminated subsurface soil or groundwater contaminated by chlorinated hydrocarbons. A nutrient fluid (NF) is selected to simulated the growth and reproduction of indigenous subsurface microorganisms capable of degrading the contaminants; an oxygenated fluid (OF) is selected to create an aerobic environment with anaerobic pockets. NF is injected periodically while OF is injected continuously and both are extracted so that both are drawn across the plume. NF stimulates microbial colony growth; withholding it periodically forces the larger, healthy colony of microbes to degrade the contaminants. Treatment is continued until the subsurface concentration of contaminants is acceptable. NF can be methane and OF be air, for stimulating production of methanotrophs to break down chlorohydrocarbons, especially TCE and tetrachloroethylene.

Inventors:
;
Issue Date:
Research Org.:
Westinghouse Savannah River Co., Aiken, SC (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
205137
Patent Number(s):
-US-A8207506
Application Number:
ON: DE96006516; PAN: 8-207,506
Assignee:
SRS; SCA: 540220; 540250; PA: EDB-96:061304; NTS-96:012846; SN: 96001550310
DOE Contract Number:  
AC09-89SR18035
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 1994
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; GROUND WATER; REMEDIAL ACTION; SOILS; MICROORGANISMS; GROWTH; WATER POLLUTION; LAND POLLUTION; IN-SITU PROCESSING; ORGANIC CHLORINE COMPOUNDS; NUTRIENTS; OXYGEN ENRICHMENT; METHANOTROPHIC BACTERIA; PLUMES; INJECTION WELLS; ORGANIC COMPOUNDS; VOLATILE MATTER; HAZARDOUS MATERIALS

Citation Formats

Hazen, T.C., and Fliermans, C.B. Bioremediation of contaminated groundwater. United States: N. p., 1994. Web.
Hazen, T.C., & Fliermans, C.B. Bioremediation of contaminated groundwater. United States.
Hazen, T.C., and Fliermans, C.B. Sat . "Bioremediation of contaminated groundwater". United States. https://www.osti.gov/servlets/purl/205137.
@article{osti_205137,
title = {Bioremediation of contaminated groundwater},
author = {Hazen, T.C. and Fliermans, C.B.},
abstractNote = {Disclosed is an apparatus and method for in situ remediation of contaminated subsurface soil or groundwater contaminated by chlorinated hydrocarbons. A nutrient fluid (NF) is selected to simulated the growth and reproduction of indigenous subsurface microorganisms capable of degrading the contaminants; an oxygenated fluid (OF) is selected to create an aerobic environment with anaerobic pockets. NF is injected periodically while OF is injected continuously and both are extracted so that both are drawn across the plume. NF stimulates microbial colony growth; withholding it periodically forces the larger, healthy colony of microbes to degrade the contaminants. Treatment is continued until the subsurface concentration of contaminants is acceptable. NF can be methane and OF be air, for stimulating production of methanotrophs to break down chlorohydrocarbons, especially TCE and tetrachloroethylene.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {1}
}