Modeling of Wastewater Treatment Processes Using Dynamic Bayesian Networks Based on Fuzzy PLS

被引:24
作者
Liu, Hongbin [1 ,2 ]
Zhang, Hao [1 ]
Zhang, Yuchen [1 ]
Zhang, Fengshan [2 ]
Huang, Mingzhi [3 ,4 ]
机构
[1] Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Nanjing 210037, Peoples R China
[2] Shandong Huatai Paper Co Ltd, Lab Comprehens Utilizat Paper Waste Shandong Prov, Dongying 257335, Peoples R China
[3] South China Normal Univ, Sch Environm, SCNU Environm Res Inst, Guangdong Prov Key Lab Chem Pollut & Environm Saf, Guangzhou 510006, Peoples R China
[4] South China Normal Univ, Sch Environm, MOE Key Lab Theoret Chem Environm, Guangzhou 510006, Peoples R China
关键词
Bayes methods; Data models; Feature extraction; Wastewater treatment; Monitoring; Uncertainty; Process modeling; Fuzzy partial least squares; latent variables; Bayesian networks; dynamic process modeling; wastewater treatment processes; PARTIAL LEAST-SQUARES; SOFT-SENSORS; TREATMENT PLANTS; FAULT-DIAGNOSIS; PREDICTION; SYSTEM; FRAMEWORK;
D O I
10.1109/ACCESS.2020.2995068
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
The complicated characteristics of wastewater treatment plants (WWTPs) significantly hinder the monitoring of industrial processes, and thus much attention has been paid to process modeling and prediction. A fuzzy partial least squares-based dynamic Bayesian networks (FPLS-DBN) is proposed to improve the modeling ability in WWTPs. To adapt the nonlinear process data, fuzzy partial least squares (FPLS) is introduced by using a fuzzy system to extract nonlinear features from process data. In addition, a dynamic extension is included by embedding augmented matrices into Bayesian networks to fit the uncertainty and time-varying characteristics. Regarding the quality indices for effluent suspended solid in the WWTP, the root mean square error of the FPLS-DBN model is decreased by 28.63% and 69.47%, respectively, in comparison with that for partial least squares and Bayesian networks. The results demonstrate the superiority of FPLS-DBN in modeling performance for an actual industrial WWTP application.
引用
收藏
页码:92129 / 92140
页数:12
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