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ENVIRONMENTAL TECHNOLOGY VERIFICATION: JOINT (NSF-EPA) VERIFICATION STATEMENT AND REPORT FOR TREATMENT OF WASTEWATER GENERATED DURING DECONTAMINATION ACTIVITIES - ULTRASTRIP SYSTEMS, INC., MOBILE EMERGENCY FILTRATION SYSTEM (MEFS) - 04/14/WQPC-HS
Citation:
NSF International. ENVIRONMENTAL TECHNOLOGY VERIFICATION: JOINT (NSF-EPA) VERIFICATION STATEMENT AND REPORT FOR TREATMENT OF WASTEWATER GENERATED DURING DECONTAMINATION ACTIVITIES - ULTRASTRIP SYSTEMS, INC., MOBILE EMERGENCY FILTRATION SYSTEM (MEFS) - 04/14/WQPC-HS. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-04/096.
Description:
Performance verification testing of the UltraStrip Systems, Inc., Mobile Emergency Filtration System (MEFS) was conducted under EPA's Environmental Technology Verification (ETV) Program at the EPA Test and Evaluation (T&E) Facility in Cincinnati, Ohio, during November, 2003, through January, 2004. The MEFS is a self-contained, transportable wastewater treatment device that is capable of treating wastewater generated from building decontamination activities resulting from intentional or accidental release of chemical or biological agents. The system, as tested, was equipped with a dechlorination sub-system; centrifuge for solids removal; media filtration including sand, activated carbon, and granular Bayoxide E33 for metals; ultra filtration for fine particles; and reverse osmosis to remove salts and large microorganisms. Three separate 10-day test phases were completed during which the MEFS was challenged with a wastewater mixture including partially-treated sewerage, used motor oil, surfactants and sediments. The tests included: trivalent arsenic, to simulate decontamination wastewater from an inorganic chemical agent (Lewisite) event; methyl parathion, to simulate decontamination wastewater from an organic chemical nerve agent event, and; sodium hypochlorite (bleach) to simulate decontamination wastewater from a biological event where chlorine dioxide and bleach were used to disinfect the contaminated area. The treatment system processed approximately 8,600 gallons per day, at a flow of about 24 gallons per minute. The MEFS demonstrated a mean treatment efficiency greater than 99.6% for the inorganic chemical simulation with an initial mean concentration of 5 mg/L arsenic. For the organic chemical simulation using an initial concentration of methyl parathion at an average of 0.72 mg/L, the MEFS displayed a mean treatment efficiency of 99.9%. The biological stimulant wastewater contained an influent concentration of free and total chlorine averaging 5,500 mg/L. Free chlorine concentrations in the effluent were below the detection limit of 0.02 mg/L for 13 of 20 samples, with the remaining samples ranging from 0.02 to 0.14 mg/L.