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Optimization of Biological Nutrient Removal in a Membrane Bioreactor System |
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| Authors: | Jignesh Patel George Nakhla Argyrios Margaritis |
| Affiliation: | 1Research Assistant, Dept. of Chemical and Biochemical Engineering, The Univ. of Western Ontario, London Ont., Canada N6A 5B9. E-mail: jpatel6@uwo.ca 2Associate Professor, Dept. of Chemical and Biochemical Engineering, The Univ. of Western Ontario, London Ont., Canada N6A 5B9 (corresponding author). E-mail: gnakhla@eng.uwo.ca 3Professor, Dept. of Chemical and Biochemical Engineering, The Univ. of Western Ontario, London Ont., Canada N6A 5B9. E-mail: amarg@uwo.ca |
| Abstract: | The main objective of the present study is to develop a modified membrane bioreactor (MBR) system for the treatment of municipal wastewater for the enhanced biological removal of nitrogen (N) and phosphorus (P) simultaneously with the ultimate goal of optimizing the two processes. The paper will address the implementation and optimization of the MBR process with respect to biological characteristics, operational performance, and effluent quality. The system utilizes anoxic P uptake and nitrification–denitrification in a MBR. Following optimization, the system achieved 99% chemical oxygen demand (COD), 98.4% NH3–N, 77.5% TN, and 96.3% P removal producing effluent biological oxygen demand, COD, NH3–N,NO3–N,NO2–N, and P of <3, 3, 0.4, 5.8, 0.050, and 0.18?mg/L, respectively. |
| Keywords: | Abatement and removal Nutrients Biological treatment Nitrification Denitrification Phosphorus Wastewater treatment |