화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.31, No.8, 1330-1338, August, 2014
DOI10.1007/s11814-014-0056-9  Export Citation
Mathematical modeling and modification of an activated sludge benchmark process evaluated by multiple performance criteria
Wenliang Chen1, 2, Chonghua Yao1, †, and Xiwu Lu3, 4, †
  • 1School of Resources and Environment Engineering, East China University of Science and Technology, Meilong Road, Shanghai 200237, China
  • 2School of Energy and Environment, Southeast University, ERC Taihu Lake Water Environment (Wuxi),, Sipailou Road, Nanjing 210096, China, Linghu Avenue, Wuxi 214135, China
  • 3School of Energy and Environment, Southeast University, Sipailou Road, Nanjing 210096, China
  • 4ERC Taihu Lake Water Environment (Wuxi), Linghu Avenue, Wuxi 214135, China
E-mail:,
Optimal modification of an activated sludge process (ASP) evaluated by multiple performance criteria was studied. A benchmark process in BSM1 was taken as a target process. Four indexes of percentage of effluent violation (PEV), energy consumption (OCI), total volume of tanks (TV) and total suspended solid in tank5 (TSSa5), were criteria and eleven process parameters were decision variables, making up the multiple criteria optimization model, which was solved by non-dominated sorting genetic algorithm II (NSGA-II) in MATLAB. Pareto solutions were obtained; one solution (opt1) was selected based on the authors’ decision for a further analysis. Results show that the process with opt1 strategy exhibits much better performance of PEV and OCI than with the default, being improved by 74.17% and 9.97% specifically under dry influent and without control. These results indicated that the multiple criterion optimization method is very useful for modification of an ASP.
Keywords:Modification of Benchmark Process;Multiple Performance Criteria;Effluent Quality;Energy Consumption;Volume of Tanks
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