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首页> 美国政府科技报告 >Evaluation of Performance and Operational Costs for Three Biological Nutrient Removal Schemes at a Full-Scale Wastewater Treatment Plant.
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Evaluation of Performance and Operational Costs for Three Biological Nutrient Removal Schemes at a Full-Scale Wastewater Treatment Plant.

机译：全尺寸污水处理厂三种生物营养物去除方案的性能和运行成本评估。

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摘要

A two-year nutrient removal study was conducted at McDowell Cook Wastewater Treatment Plant in Charlotte, North Carolina. The overall objective of the research was to evaluate the plant, including documenting costs for three biological nutrient removal schemes implemented at the plant, including documenting and monitoring effluent nitrogen and phosphorus levels for each configuration, and tracking the operations, maintenance and chemical input costs for operation. The nutrient removal schemes evaluated included the University of Cape Town/Virginia Initiative Plant (UCT/VIP) process, the Charlotte, North Carolina (CNC) process, the modified Orange Water and Sewer Authority (OWASA) process, and the chemical phosphorous removal process. All processes were successful in removing phosphorus and nitrogen from the wastewater to meet permit limits of 1 mg/L and 10 mg/L for total phosphorous and nitrogen respectively. All processes required supplemental acetic acid feed to assist in anaerobic phosphorus release. Problems with process stability were encountered due to the plant expansion underway, and it was discovered that each process must be closely monitored to ensure efficient removal. Low levels of alum addition for phosphorous precipitation were necessary to meet regulatory limits during periods of instability.

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