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Technology Demonstration Summary. CWM PO*WW*ER™ Evaporation-Catalytic Oxidation Technology (EPA/540/SR-93/506)
Citation:
Labunski, S. AND et al. Technology Demonstration Summary. CWM PO*WW*ER™ Evaporation-Catalytic Oxidation Technology (EPA/540/SR-93/506). EPA/540/R-93/506a (NTIS 94-160637), 1994.
Impact/Purpose:
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Description:
As part of the Superfund Innovative Technology Evaluation (SITE) program, the U.S. Environmental Protection Agency (EPA) demonstrated the Chemical Waste Management, Inc. (CWM), PO*WW*ER™ technology. The SITE demonstration was conducted in September 1992 at CWM's Lake Charles Treatment Center (LCTC) site in Lake Charles, LA. During the demonstration, the PO*WW*ER™ system treated landfill leachate contaminated with volatile organic compounds (VOC), semivolatile organic compounds (SVOC), metals, ammonia, cyanide, and other inorganic contaminants. SITE demonstration results show that during treatment in the PO*WW*ER™ system, the volume of the landfill leachate was significantly reduced. A total solids (TS) concentration ratio of 32 to 1 was achieved. The SITE demonstration results also show that the PO*WW*ER™ system effectively removed sources of toxicity such as VOCs, SVOCs, metals, ammonia, and cyanide. Concentrations of VOCs and SVOCs in product condensate exiting the PO*WW*ER™ system were below their respective detection limits of 5 to10 micrograms per liter (ug/L) and 10 to 130 ug/L. Product condensate contained trace levels of metals. Ammonia and cyanide concentrations in the product condensate samples were below their respective detection limits of 0.1 and 0.01milligrams per liter mg/L). The product condensate was nontoxic but only after it was cooled and its pH, dissolved oxygen level, and hardness or salinity were increased to meet demonstration objectives and as allowed in EPA acute toxicity testing procedures. Noncondensible vent gas emissions met proposed permit requirements for the LCTC site. Data provided by CWM show that the PO*WW*ER™ technology can effectively treat the following wastes: (1) landfill leachate, (2) contaminated well water, (3) contaminated lagoon water, (4) fuels decant water, (5) oil emulsion wastewater, and (6) nitrogen-containing organic compounds wastewater. The PO*WW*ER™ technology also effectively treats the following contaminants: VOCs, SVOCs, pesticides, herbicides, solvents, heavy metals, ammonia, cyanide, nitrate, chloride, and sulfide.