Study on Model of Membrane Fouling:Development and Application to Dead-end Microfiltration of the Activated Sludge of SBR
Membrane fouling is the major drawback to broadly application of microfiltration (MF) membrane for water and wastewater treatment in MBR.In this paper,we have acquired the experimental data for the dependence of permeate flux on filtration time in stirred dead-end microfiltration of the activated sludge acclimated in SBR from our laboratory by 0.1|J m hydrophilic polyvinylidene fluoride (PVDF) membrane.Meantime,the influences of the following three operating conditions: (ⅰ) transmembrane pressure (TMP); (ⅱ) the concentration of the mixed liquor suspended solid (MLSS); (ⅲ) agitated speed on permeate flux―were investigated.A quantitatively fouling model concerning the normalized permeate flux-decline was derived by relaxation model,all the parameters in the fouling model were evaluated by nonlinear regression using 1 stOpt software (China) by two objective functions including nonlinear regression coefficient (R2) and the sum of squared error (SSE).The experimental results indicated: (ⅰ) the rate of flux-decline was faster with increase in TMP and MLSS; the rate of flux-decline was larger with decrease in agitated speed; (ⅱ) the developed mathematical model can provides a good fit to the experimental data with high value of R2 and low value of SSE,and may be applicable to systems where the models are consistent with the experimentally observed fouling mechanisms.
membrane fouling activated sludge SBR mathematical model
Zhou Yuenan Wang Zhan Zhang Qian Zhang Ximing Yang Wentao Cheng Lina
Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
国际会议
2013青岛国际脱盐大会(Qingdao International Conference 2013 on Desalination and Water Reuse)
青岛
英文
330-334
2013-06-25（万方平台首次上网日期，不代表论文的发表时间）