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首页> 美国政府科技报告 >Demonstration of In-Situ Thermal Desorption-Destruction of PCB's in Contaminated Soils at Mare Island Shipyard
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Demonstration of In-Situ Thermal Desorption-Destruction of PCB's in Contaminated Soils at Mare Island Shipyard

机译：在mare Island造船厂污染土壤中原位热解吸 - 破坏pCB的示范

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TerraTherm Environmental Services, Inc. and RT Environmental Services, Inc. conducted a successful field demonstration of In-Situ Thermal Desorption (ISTD) sponsored by the Bay Area Defense Conversion Action Team Environmental Technology Partnership. The ISTD technology uses the direct application of heat supplied by electrical heater elements to raise the temperature of soil in-situ to destroy the organic contaminant targeted. Two configurations of the heating elements are the Thermal Blankets, which treat surface soil up to 18 inches deep, and the Thermal Wells, which are drilled vertically or horizontally to treat deep or hard-to-reach areas. Both ISTD configurations were demonstrated at Mare Island Shipyard in Vallejo, California. The goals of the demonstration were to gain further evidence on the performance of ISTD to destroy and remove PCB's to well below 2 mg/kg and to obtain cost estimate data. Verification sampling results showed that TerraTherm met the 2 mg/kg goal by achieving non-detect readings in all areas tested. Continuous air monitoring from the stack showed all emissions within allowable limits, as was ambient HCl levels. The cost of ISTD depends on a variety of factors such as depth of contamination, soil moisture and contaminant types.

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