Prediction of membrane fouling in MBR systems using empirically estimated specific cake resistance
Khan, S. Jamal, Visvanathan, C., and Jegatheesan, V. (2009) Prediction of membrane fouling in MBR systems using empirically estimated specific cake resistance. Bioresource Technology, 100 (23). pp. 6133-6136.
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The focus of this study was to empirically estimate the specific cake resistance (SCR) by the variation in shear intensity (G) in four laboratory-scale MBRs. The control reactor (MBR0) was operated with aeration only while other MBRs (MBR150, MBR300 and MBR450) were operated with aeration and mechanical mixing intensities of 150, 300 and 450 rpm, respectively. It was found that the SCR was strongly correlated (R2 = 0.99) with the fouling rates in the MBRs. Moreover, the contribution of cake resistance (Rc) to the total hydraulic resistance (Rt) was predominant compared to the irreversible fouling resistance (Rf). On this basis, the cake filtration model was selected as a predictive tool for membrane fouling. This model was modified by replacing the SCR with its empirical shear intensity relationship. The modified model can predict the fouling rate for a given shear intensity (G) within 80 and 250 s−1 in a MBR system.
|Item Type:||Article (Refereed Research - C1)|
|Keywords:||membrane bioreactor; membrane fouling; specific cake resistance; shear intensity; cake filtration model;|
|Date Deposited:||18 May 2010 22:46|
|FoR Codes:||09 ENGINEERING > 0904 Chemical Engineering > 090404 Membrane and Separation Technologies @ 60%
09 ENGINEERING > 0904 Chemical Engineering > 090409 Wastewater Treatment Processes @ 40%
|SEO Codes:||96 ENVIRONMENT > 9611 Physical and Chemical Conditions of Water > 961101 Physical and Chemical Conditions of Water for Urban and Industrial Use @ 100%|
|Citation Count from Web of Science||