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In August 1998 the DuPont Nylon Intermediates manufacturing plant at Victoria, Texas commenced operation of a new wastewater management facility to replace deepwell disposal of wastewater. The new wastewater management facility features an innovative anoxic/aerobic biological treatment plant, a 53-acre post treatment constructed wetland, and a 200-acre area for demonstration of the beneficial reuse of biosolids. The use of innovative processes produced a design basis and scope that reduced the total end-of-pipe wastewater management capital cost estimate from 100 million in 1991 to an actual cost of approximately 40 million. Cost reductions were achieved through a combination of conversion of former byproducts into coproducts, manufacturing process changes, and, recycle, recovery and reuse of ingredients. The wastewater treatment process is working extremely well with Chemical Oxygen Demand (COD) removal approaching 99% and complete removal of nitrate nitrogen. Wetland and beneficial reuse performance has met or exceeded expectations.

This paper will cover technology innovation, design basis, equipment type/sizing, performance, risk management, cost, and key learning's for the three portions of the wastewater management facility (i.e. biological treatment, wetland and beneficial reuse).

Document Type: Research Article


Publication date: 2000-01-01

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