Thermal Desorption/Ultraviolet Photolysis Process Technology Research, Test, and Evaluation Performed at the Naval Construction Battalion Center, Gulfport, Mississippi, for the USAF Installation Restoration Program. Volume 1

摘要

The objective of this effort was to examine the feasibility of using a thermal desorption/ultraviolet (TD/UV) destruction technology to treat Herbicide Orange (HO)-contaminated soil at the Naval Construction Battalion Center (NCBC), Gulfport, Mississippi. The IT Corporation pilot-scale TD/UV apparatus was used to successfully treat 1700 pounds of sandy-loam, cement stabilized, soil that had been contaminated with HO and tetrachlorodibenzo-p-dioxin (TCDD). The TD/UV process volatilizes organic compounds from the soil matrix; collects the desorbed organics in a solvent; and destroys the contaminants with high-intensity ultraviolet light. The desorption process occurs between 850 to 1150 degrees F. in a nitrogen atmosphere to prevent combustion of the organics. Analysis of feedstock showed TCDD levels ranged from 233-272 parts per billion (ppb). Concentration in the treated soil, measured as the sum of all dioxin/furan congeners, was less than 1ppb, the USAF criterion. The TD/UV process demonstrated the capability to treat dioxin-contaminated soil and a scaled up version could be considered as a bulk reduction process for restoration of sites contaminated with chlorinated organic compounds including other DOD Herbicide Orange contaminated sites. This report is organized into four volumes: Volume I presents the final report on the performance of the Thermal Desorption/Ultraviolet Photolysis process for use in decontaminating soil containing Herbicide Orange/Dioxin. Volume II contains appendices A through O. Volume III contains appendix P. Volume IV contains appendices Q through V. Keywords: Incineration. (aw)