Comparison of Bio-P module and the Modified Bio-P module in the step-feed biological nutrient removal process |
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| Authors: | Kyungik Gil Haeyeon Rho Daeik Kim and Michael K Stenstrom |
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| Institution: | (1) School of Civil Engineering, Seoul National University of Science and Technology, Nowon-Gu, Seoul, 139-743, South Korea;(2) Department of Civil Engineering, Seoul National University of Science and Technology, Nowon-Gu, Seoul, 139-743, South Korea;(3) DechloriTek, Inc., 2575 Coventry Circle, Fullerton, CA 92833, USA;(4) Department of Civil and Environmental Engineering, University of California, Los Angeles, CA 90095-1593, USA |
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| Abstract: | The Modified Bio-P module was evaluated in terms of the kinetic rate expression and engineering parameters, comparing the
measured data of full-scale plant with simulated data. To simulate step-feed BNR (Biological Nutrient Removal), the ASM3 (Activated
Sludge Model 3) with the EAWAG Bio-P Module (The Swiss Federal Institute for Environmental Science and Technology) and the
ASM3+Modified Bio-P module were used. The RMSEs (root mean square error) of the T-N (total nitrogen) concentration of the
effluent levels of measured and simulated examples were 2.29 for ASM3+Bio-P and 1.28 for ASM3+Modified Bio-P. In the case
of T-P (total phosphorus), the RMSEs were 0.28 for ASM3+Bio-P and 0.25 for ASM3+Modified Bio-P. The annual removal rates for
T-N were 0.77 for the measured, 0.69 for the Bio-P, and 0.74 for the Modified Bio-P samples, while the annual removal rates
for T-P were 0.64 for the measured, 0.72 for the Bio-P, and 0.60 for the Modified Bio-P cases. With simulated data, the Modified
Bio-P model was a better fit for the field data compared to Bio-P. The Modified Bio-P module reproduced the step-feed process
more effectively than the Bio-P module. |
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