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A manufacturer of metal cutting fluids had a problem complying with their permitted limit of oil and grease in their wastewater. A feasibility study identified source reduction and treatment alternatives, described bench-scale tests, estimated capital and operating costs of technologies, and recommended the most economical of the effective alternatives. The study recommended evaporation to treat the problematic wastewater. The author designed and constructed the evaporation complex. The improvements allowed the manufacturer to maintain quality control by completely flushing product piping and equipment between batches. The residual is automatically discharged to a tank for disposal or to be burned in a boiler that provides steam heat to the evaporator. Burning the residual waste reduced the disposal cost and the net operating cost of evaporation.

Document Type: Research Article


Publication date: January 1, 2001

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  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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