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DESIGN AND OPERATION OF A HIGH STRENGTH ORGANIC WASTEWATER TREATMENT SYSTEM TO APPROACH ZERO NET SLUDGE PRODUCTION AT A SPECIALTY CHEMICAL PLANT

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The purpose of this paper is to present the four year operational experience with an aerobic thermophilic biological treatment system that is treating high strength organic chemical wastes(130,000 mg/L) with over 400 mg/L of toluene and 8% salt (non-volatile dissolved solids). The particular installation is of interest since it has treated over 4,000 tons of COD without making any waste sludge that had to be hauled off-site. It should be noted that there is total control of biological solids in the system because solids separation is achieved using an ultrafilter. This particular proprietary system also has an integral chemical treatment step that mitigates the need for wasting of biomass. The goal of this paper is to present key design and operational considerations that are needed for the successful application of this technology. The application of this technology saved the plant site an estimated 1.5 million/year in disposal costs and provided a secure, “green”, on-site destruction technology for disposing of the production wastes.
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Document Type: Research Article

Publication date: 01 January 2004

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