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http://dx.doi.org/10.1007/s11814-010-0502-2

Simulation and performance evaluation of the anoxic/anaerobic/aerobic process for biological nutrient removal  

Zhou, Zhen (School of Energy and Environmental Engineering, Shanghai University of Electric Power)
Wu, Zhichao (State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University)
Wang, Zhiwei (State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University)
Tang, Shujuan (State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University)
Gu, Guowei (State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University)
Wang, Luochun (School of Energy and Environmental Engineering, Shanghai University of Electric Power)
Wang, Yingjun (School of Energy and Environmental Engineering, Shanghai University of Electric Power)
Xin, Zhiling (School of Energy and Environmental Engineering, Shanghai University of Electric Power)
Publication Information
Korean Journal of Chemical Engineering / v.28, no.5, 2011 , pp. 1233-1240 More about this Journal
Abstract
As a modified configuration of the conventional anaerobic/anoxic/aerobic (AAO) process, a novel anoxic/anaerobic/aerobic (Reversed AAO, RAAO) process has been extensively applied in domestic wastewater treatment plants (WWTP). In this study, the Activated Sludge Model No. 2d (ASM2d) and a secondary clarifier model were calibrated and applied to simulate a pilot-scale RAAO test and evaluate the operational performance of the RAAO process. For calibration of the biological model ASM2d, only four kinetic parameters were adjusted to accurately simulate in-process variations of ammonium, nitrate and phosphate. Simulation results by the calibrated model demonstrated that phosphorus accumulating organisms (PAO) in the RAAO process (0.243 $gP{\cdot}(gCOD)^{-1}$) contains less poly-phosphate than the AAO process (0.266 $gP{\cdot}(gCOD)^{-1}$). With the increasing mixed liquor recirculation ratio in the RAAO process, the fraction of heterotrophic biomass and autotrophic biomass both increased, whereas the PAO decreased owing to adverse effects of electron acceptors on phosphorus release and poly-hydroxy-alkanoates synthesis.
Keywords
Wastewater Treatment; Biological Nutrient Removal; Simulation; Activated Sludge; Calibration;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By Web Of Science : 4  (Related Records In Web of Science)
Times Cited By SCOPUS : 0
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