Terra-Kleen Response Group, Inc. Solvent Extraction Technology. Innovative Technology Evaluation Report

摘要

Terra-Kleen Response Group, Inc. (Terra-Kleen) has developed a solvent extraction technology to remove organic contaminants from soil. The U. S. Environmental Protection Agency (EPA) Superfund Innovative Technology Evaluation (SITE) Program evaluated the performance of this technology during a demonstration at Site 4 of Naval Air Station North Island (NASNI) in San Diego, California in May and June 1994. This Innovative Technology Evaluation Report (ITER) describes the technology and environmental requirements, an economic analysis of treatment costs, and an evaluation of the performance of the technology during the SITE demonstration. The Terra-Kleen technology employs a proprietary solvent that extracts organic contaminants from contaminated soil. Following this extraction, the organic-laden solvent is then filtered and purified, using a proprietary purification unit. Regenerated solvent is continuously recycled through the contaminated soil until a target cleanup level is achieved. Any solvent remaining in the treated soil is removed using vacuum extraction and biological treatment. Terra-Kleen claims that its treatment process removes polychlorinated biphenyls (PCB), petroleum hydrocarbons, chlorinated hydrocarbons, polynuclear aromatic hydrocarbons, polychlorinated dibenzo-p-dioxins, polychlorinated dibenzo-p-furans, and metals from contaminated soil.