Toxicity Reduction in Soil-Based Treatment Systemby Srinivasa M. Dasappa, Engineering Science Inc, United States,
Raymond C. Loehr, Engineering Science Inc, United States,
Abstract: With the introduction of environmental; regulations such as RCRA, HSWA, CERCLA and SARA, the treatment of hazardous wastes in soil-based systems is required to be protective of human health and the environment. The success of soil-based treatment systems lies in: a) ensuring non-toxic conditions when a waste is applied to soil, and b) complete detoxification of the waste within the treatment zone. Both aspects can be assured using waste toxicity informationazlong with supportive chemical analyses information in design and operation of soil-based systems. Laboratory studies of phenolic compounds were conducted to characterize chemical toxicity, determine chemical loading on soil, overall chemical degradation, and toxicity reduction. The results indicated that the toxicity parameter is important in: a) conducting initial treatbility studies, b) design and operation of soil-based treatment systems, and c) monitoring the waste detoxification.
Subject Headings: Soil treatment | Chemical degradation | Toxicity | Waste treatment | Environmental issues | Public health and safety | Laboratory tests
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