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.:
- Savannah River Site (SRS), Aiken, SC (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 205137
- Patent Number(s):
- 8207506
- Application Number:
- ON: DE96006516; PAN: 8-207,506
- Assignee:
- SRS; SCA: 540220; 540250; PA: EDB-96:061304; NTS-96:012846; SN: 96001550310
- Patent Classifications (CPCs):
-
C - CHEMISTRY C03 - GLASS C03C - CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS
G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION
- 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 = {Sat Jan 01 00:00:00 EST 1994},
month = {Sat Jan 01 00:00:00 EST 1994}
}