title: Simulation and optimization of a coking wastewater biological treatment process by activated sludge models (ASM).
abstract: Applications of activated sludge models (ASM) in simulating industrial biological wastewater treatment plants (WWTPs) are still difficult due to refractory and complex components in influents as well as diversity in activated sludges. In this study, an ASM3 modeling study was conducted to simulate and optimize a practical coking wastewater treatment plant (CWTP). First, respirometric characterizations of the coking wastewater and CWTP biomasses were conducted to determine the specific kinetic and stoichiometric model parameters for the consecutive aeration-anoxic-aeration (O-A/O) biological process. All ASM3 parameters have been further estimated and calibrated, through cross validation by the model dynamic simulation procedure. Consequently, an ASM3 model was successfully established to accurately simulate the CWTP performances in removing COD and NH4-N. An optimized CWTP operation condition could be proposed reducing the operation cost from 6.2 to 5.5 €/m(3) wastewater. This study is expected to provide a useful reference for mathematic simulations of practical industrial WWTPs.
authors.affiliation: School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, PR China. Electronic address: xhwoo@hust.edu.cn.
authors.forename: Xiaohui
authors.initials: X
authors.lastname: Wu
authors.affiliation: School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, PR China; Nuclear Power Institute of China, Chengdu, 610041, PR China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Yang
authors.affiliation: Wuhan Iron and Steel Co. Ltd., Wuhan, 430080, PR China.
authors.forename: Gaoming
authors.initials: G
authors.lastname: Wu
authors.affiliation: School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, PR China.
authors.forename: Juan
authors.initials: J
authors.lastname: Mao
authors.affiliation: School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, PR China. Electronic address: zhoutao@hust.edu.cn.
authors.forename: Tao
authors.initials: T
authors.lastname: Zhou
mesh_terms: D018533:Biomass; D019149:Bioreactors; D002138:Calibration; D003077:Coke; D007700:Kinetics; D008962:Models, Theoretical; D012722:Sewage / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000737:chemistry*
chemical_list: D003077:Coke; D012722:Sewage; D062065:Wastewater
keywords: Activated sludge model no. 3 (ASM3); Coking wastewater; Industrial wastewater treatment plants; Parameter estimation; Sensitivity analysis