Bioremediation of contaminated groundwater
Abstract
An apparatus and method for in situ remediation of contaminated subsurface soil or groundwater contaminated by chlorinated hydrocarbons. A nutrient fluid is selected to stimulate the growth and reproduction of indigenous subsurface microorganisms that are capable of degrading the contaminants; an oxygenated fluid is selected to create a generally aerobic environment for these microorganisms to degrade the contaminants, leaving only pockets that are anaerobic. The nutrient fluid is injected periodically while the oxygenated fluid is injected continuously and both are extracted so that both are drawn across the plume. The nutrient fluid stimulates microbial colony growth; withholding it periodicially forces the larger, healthy colony of microbes to degrade the contaminants. Treatment is continued until the subsurface concentration of contaminants is reduced to an acceptable, preselected level. The nutrient fluid can be methane and the oxygenated fluid air for stimulating production of methanotrophs to break down chlorohydrocarbons, especially trichloroethylene (TCE) and tetrachloroethylene.
- Inventors:
-
- Augusta, GA
- Issue Date:
- Research Org.:
- Savannah River Site (SRS), Aiken, SC (United States)
- OSTI Identifier:
- 869718
- Patent Number(s):
- 5384048
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B09 - DISPOSAL OF SOLID WASTE B09C - RECLAMATION OF CONTAMINATED SOIL
C - CHEMISTRY C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE C02F - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- DOE Contract Number:
- AC09-89SR18035
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- bioremediation; contaminated; groundwater; apparatus; method; situ; remediation; subsurface; soil; chlorinated; hydrocarbons; nutrient; fluid; selected; stimulate; growth; reproduction; indigenous; microorganisms; capable; degrading; contaminants; oxygenated; create; aerobic; environment; degrade; leaving; pockets; anaerobic; injected; periodically; continuously; extracted; drawn; plume; stimulates; microbial; colony; withholding; periodicially; forces; larger; healthy; microbes; treatment; continued; concentration; reduced; acceptable; preselected; level; methane; air; stimulating; production; methanotrophs; break; chlorohydrocarbons; especially; trichloroethylene; tce; tetrachloroethylene; chlorinated hydrocarbons; contaminated groundwater; selected level; subsurface soil; water contaminated; preselected level; chlorinated hydrocarbon; contaminated subsurface; situ remediation; /210/405/435/588/
Citation Formats
Hazen, Terry C, and Fliermans, Carl B. Bioremediation of contaminated groundwater. United States: N. p., 1995.
Web.
Hazen, Terry C, & Fliermans, Carl B. Bioremediation of contaminated groundwater. United States.
Hazen, Terry C, and Fliermans, Carl B. Sun .
"Bioremediation of contaminated groundwater". United States. https://www.osti.gov/servlets/purl/869718.
@article{osti_869718,
title = {Bioremediation of contaminated groundwater},
author = {Hazen, Terry C and Fliermans, Carl B},
abstractNote = {An apparatus and method for in situ remediation of contaminated subsurface soil or groundwater contaminated by chlorinated hydrocarbons. A nutrient fluid is selected to stimulate the growth and reproduction of indigenous subsurface microorganisms that are capable of degrading the contaminants; an oxygenated fluid is selected to create a generally aerobic environment for these microorganisms to degrade the contaminants, leaving only pockets that are anaerobic. The nutrient fluid is injected periodically while the oxygenated fluid is injected continuously and both are extracted so that both are drawn across the plume. The nutrient fluid stimulates microbial colony growth; withholding it periodicially forces the larger, healthy colony of microbes to degrade the contaminants. Treatment is continued until the subsurface concentration of contaminants is reduced to an acceptable, preselected level. The nutrient fluid can be methane and the oxygenated fluid air for stimulating production of methanotrophs to break down chlorohydrocarbons, especially trichloroethylene (TCE) and tetrachloroethylene.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1995},
month = {Sun Jan 01 00:00:00 EST 1995}
}
Works referenced in this record:
Biodegradation of chlorinated ethenes by a methane-utilizing mixed culture
journal, April 1986
- Fogel, M. M.; Taddeo, A. R.; Fogel, S.
- Applied and Environmental Microbiology, Vol. 51, Issue 4
Biodegradation of trichloroethylene and involvement of an aromatic biodegradative pathway
journal, May 1987
- Nelson, M. J.; Montgomery, S. O.; Mahaffey, W. R.
- Applied and Environmental Microbiology, Vol. 53, Issue 5
Aerobic Metabolism of Trichloroethylene by a Bacterial Isolate
journal, August 1986
- Nelson, Michael J. K.; Montgomery, S. O.; O'Neill, E. J.
- Applied and Environmental Microbiology, Vol. 52, Issue 2