Permeable Organic Biowalls for Remediation Of Perchlorate in Groundwater
Enhanced in situ anaerobic bioremediation using permeable organic biowalls can be an effective method of degrading perchlorate in groundwater, and is anticipated to be a cost-effective and widely applicable treatment technology for shallow groundwater plumes. Biowalls constructed with organic substrates such as mulch and compost are intended to provide a long-term source of organic carbon to stimulate anaerobic biodegradation of contaminants over periods of several years, typically 3 to 5 years without modification based on experience at the former Naval Weapons Industrial Reserve Plant (NWIRP) in McGregor, Texas (CH2M HILL, 2006). Biowall systems may be replenished with fluid substrates (e.g., emulsified vegetable oil) to operate over longer periods of time.
Permeable biowalls are used in a biobarrier configuration to intercept and degrade perchlorate (and other contaminants subject to anaerobic degradation processes) dissolved in shallow groundwater (e.g., Perlmutter...
KeywordsTotal Organic Carbon United States Environmental Protection Agency Tree Mulch Perchlorate Concentration Soluble Organic Carbon
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