Min-Hua Cui

Publications (3)13.98 Total impact

• Article: Retraction notice to: Improving the efficiencies of simultaneous organic substance and nitrogen removal in a multi-stage loop membrane bioreactor-based PWWTP using an on-line Knowledge-Based Expert System [Water Res. 45(16) (2011) 5266-5278].

  Zhao-Bo Chen, Shu-Kai Nie, Nan-Qi Ren, Zhi-Qiang Chen, Hong-Cheng Wang, Min-Hua Cui
  Water Research 02/2013; 47(2):955. · 4.86 Impact Factor
• Article: Improving the efficiencies of simultaneous organic substance and nitrogen removal in a multi-stage loop membrane bioreactor-based PWWTP using an on-line Knowledge-Based Expert System.

  Zhao-Bo Chen, Shu-Kai Nie, Nan-Qi Ren, Zhi-Qiang Chen, Hong-Cheng Wang, Min-Hua Cui
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  ABSTRACT: The results of the use of an expert system (ES) to control a novel multi-stage loop membrane bioreactor (MLMBR) for the simultaneous removal of organic substances and nutrients are reported. The study was conducted at a bench-scale plant for the purpose of meeting new discharge standards (GB21904-2008) for the treatment of chemical synthesis-based pharmaceutical wastewater (1200-9600 mg/L COD, 500-2500 mg/L BOD5, 50-200 mg/L NH4+-N and 105-400 mg/L TN in the influent water) by developing a distributed control system. The system allows various expert operational approaches to be deployed with the goal of minimizing organic substances and nitrogen levels in the outlet while using the minimum amount of energy. The proposed distributed control system, which is supervised by a Knowledge-Based Expert System (KBES) constructed with G2 (a tool for expert system development) and a back propagation BP artificial neural network, permits the on-line implementation of every operating strategy of the experimental system. A support vector machine (SVM) is applied to achieve pattern recognition. A set of experiments involving variable sludge retention time (SRT), hydraulic retention time (HRT) and dissolved oxygen (DO) was carried out. Using the proposed system, the amounts of COD, TN and NH4+-N in the effluent decreased by 55%, 62% and 38%, respectively, compared to the usual operating conditions. These improvements were achieved with little energy cost because the performance of the treatment plant was optimized using operating rules implemented in real time.
  Water Research 08/2011; 45(16):5266-78. · 4.86 Impact Factor
• Article: Improving the simultaneous removal efficiency of COD and color in a combined HABMR-CFASR system based MPDW. Part 1: optimization of operational parameters for HABMR by using response surface methodology.

  Zhao-Bo Chen, Min-Hua Cui, Nan-Qi Ren, Zhi-Qiang Chen, Hong-Cheng Wang, Shu-Kai Nie
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  ABSTRACT: The aim of this study was to implement central-composite design (CCD) and response surface methodology (RSM) to optimize the operational parameters for hybrid anaerobic baffled microbial reactor (HABMR) remedying mixed printing and dyeing wastewater (MPDW). The individual and interactive effects of three variables, hydraulic retention time (HRT), pH, sludge loading rate (SLR) on the COD and color removal rates were evaluated. In the area of HRT: 12.5-13.9 h, pH: 9.0-9.5 and SLR: 0.27-0.33 kg COD/(kg MLVSSd), COD and color removal rates of HABMR exceeded 40% and 60%, simultaneously. The check experiment revealed that the amount of COD and color in the effluent could be decreased by 9.97% and 10.12% compared to the usual operating conditions, respectively. The results verified that the RSM was useful for optimizing the operational parameters of HABMR in treating MPDW.
  Bioresource technology 06/2011; 102(19):8839-47. · 4.25 Impact Factor