Explosives contaminated soils, scheduled for remediation using a thermal treatment unit, was also found to contain low levels of perchlorate. It was decided that the treatment process could be altered to address this compound as well as the explosives. A bench scale study verified treatability of perchlorate via thermal destruction and helped establish baseline treatment conditions. Subsequently, pilot scale studies were conducted with soils spiked with perchlorate. These tests allowed field proofing of the laboratory results and defined the process parameters. During full scale operations, process parameters were further modified to increase the efficiency of remediation. Analytical results from approximately 60,000 tons of treated soils indicate that thermal treatment is successful in the removal of explosives and perchlorate from soil.
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