Enhancing Nitrification in an Oil Refinery WWTP with IFAS
Abstract:The Frontier Oil refinery in Cheyenne, WY had a great deal of trouble meeting a new effluent permit limit of 2.18 mg/l monthly average ammonia nitrogen, mainly due to large fluctuations in the strength and type of influent wastewater. The company decided to become the first documented oil refinery in the United States to use the Integrated Fixed-Film/Activated Sludge process to upgrade their exisitng WWTP for better nitrification. Frontier added 240 m3 (16% fill fraction) of high surface area plastic carrier elements to each of their two parallel activated sludge aeration basins, and have since acheived consistant nitrification despite several major refinery process changes and corresponding wastewater plant upsets.
Document Type: Research Article
Publication date: 2008-01-01
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