ELI/SBP's UVB (Vacuum Vaporization Well) System for Treatment of VOC-Contaminated211 Soils. Innovative Technology Evaluation Report

摘要

This report summarizes the findings of an evaluation of the Unterdruck-Verdampfer-211u001eBrunnen (UVB) technology developed by IEG Technologies (IEG) and licensed in the 211u001eeastern United States by Environmental Laboratories, Inc. (ELI) and SBP 211u001eTechnologies (SBP). The UVB technology was demonstrated over a period of 14 211u001emonths from July 1994 through October 1995 at the Sweden-3 Chapman Lanfill in 211u001eSweden, NY. A modified microbial system employing an in-well biofilter was 211u001edemonstrated, along with the ENSR/Larsen Biovault technology and the R. E. Wright 211u001eEnvironmental, Inc. In Situ Bioventing System, as part of a multivendor 211u001ebioremediation demonstration. The primary objective of the demonstration was to 211u001edetermine the effectiveness of the UVB process in reducing the concentration of 211u001esix target VOCs in the vadoze zone to below New York State Department of 211u001eEnvironmental Conservation Soil Cleanup Criteria (NYSDEC). The VOCs and criteria 211u001eare: acetone 0.2 ppm; methyl ethyl ketone 0.6 ppm; 4-methyl-2-pentanone 2 ppm; 211u001ecis-1,2-dichloroethene 0.6 ppm; tirchloroethene 1.5 ppm; and tetrachloroethene 211u001e2.5 ppm. After 5.5 months, 65% of the approximately 50 soil samples from both the 211u001evadose zone and saturated zones met the NYSDEC criteria. Seventy percent met the 211u001ecriteria after 14 months.