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FIELD DEMONSTRATION OF PROPANE BIOSPARGING FOR IN SITU REMEDIATION OF N-NITROSODIMETHYLAMINE (NDMA) IN GROUNDWATER: ESTCP COST AND PERFORMANCE REPORT
ESTCP Project ER-200828, 74 pp, 2015
Propane gas and oxygen were added to groundwater via sparging to stimulate native microbes to biodegrade NDMA in situ at the Aerojet Superfund site in Rancho Cordova, Calif. Groundwater NDMA concentrations at the test site ranged from ~2,000 to >30,000 ng/L. The sparging system, which consisted of three biosparging wells connected to an air compressor and propane gas feed, supplied ~1.8 lb of propane to the in situ test plot per day for a period of 374 days. NDMA concentrations declined by >99.7% in the treatment area. A full-scale propane biosparge system was estimated to be ~40% less expensive to build, install, and operate than a comparable UV system over a 30-yr time frame. https://www.estcp.com/content/download/40785/390111/file/ER-200828%20C&P%20Report.pdf
Propane gas and oxygen were added to groundwater via sparging to stimulate native microbes to biodegrade NDMA in situ at the Aerojet Superfund site in Rancho Cordova, Calif. Groundwater NDMA concentrations at the test site ranged from ~2,000 to >30,000 ng/L. The sparging system, which consisted of three biosparging wells connected to an air compressor and propane gas feed, supplied ~1.8 lb of propane to the in situ test plot per day for a period of 374 days. NDMA concentrations declined by >99.7% in the treatment area. A full-scale propane biosparge system was estimated to be ~40% less expensive to build, install, and operate than a comparable UV system over a 30-yr time frame. https://www.estcp.com/content/download/40785/390111/file/ER-200828%20C&P
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