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COMPREHENSIVE REPORT ON THE KPEG PROCESS FOR TREATING CHLORINATED WASTES
Citation:
Taylor, M., J. Wentz, M. Dosani, W. Gallagher, AND J. Greber. COMPREHENSIVE REPORT ON THE KPEG PROCESS FOR TREATING CHLORINATED WASTES. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/2-90/005.
Description:
This comprehensive report describes the work performed in several laboratories toward the development of the alkali metal polyethylene glycolate (APEG) chemical dechlorination technology. he equipment and operational procedures implemented in various studies (ranging in scope from laboratory scale to full scale) are described and the results obtained are presented. uch of the work described herein was funded by the U.S. Environmental Protection Agency's Risk Reduction Engineering Laboratory, Cincinnati, OH.The initial laboratory studies that were performed focused on treatment of oils that were contaminated with PCBs as well as closely related compounds, including polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCOFs). Laboratory-scale studies involving PCB-, PCDD-, and PCDF-contaminated soils were performed during the early to mid-1980's; the results of these studies led to the design and implementation of drum and pilot-scale versions of the APEG process. he largest APEG treatment system demonstrated to date consists of a steam-jacketed mixer a steam-generating plant, and a condensate-collection system. n the Island of Guam, approximately 15 yds3 of soil in batches of 1.5 to 2 yds1 each (with average initial PCB concentration of 3340 ppm) were treated with KPEG. he PCB concentrations in the Guam soil were reduced by more than 99 percent, with no individual PCB congener exceeding 2 ppm.This report includes detailed information regarding the preparation of the contaminated soils prior to treatment; equipment and reagents used during treatment; and analyses performed before, after, and during treatment. he report provides the potential users of the APEG process with information that can be used to assess which version of the APEG process is best suited for implementation at a particular site.