标题：Process Analysis and Optimization of Industrial Estate Wastewater Treatment Using Conventional and Compartmentalized Membrane Bioreactor: A Comparative Study
期刊名称：Iranica Journal of Energy and Environment (IJEE)
印刷版ISSN：2079-2115
电子版ISSN：2079-2123
出版年度：2014
期号：2
页码：101-112
语种：English
出版社：Noshirvani University of TEchnology
摘要：Membrane bioreactor (MBR) technology isan integrated combined system of biological and membrane processes to treat wastewater. MBR competently removes organic matters and suspended solids from any type of wastewater. This study is aimed to evaluate and compare the performance of conventional and compartmentalized lab-scale MBR in treating an industrial estate wastewater (Faraman Industrial Estate, Kermanshah, Iran). The MBR systems were operated in two conditions; one in a completely stirred regime(conventional activated sludge (AS) system) and the other one in a semi plug flow regime(compartmentalized activated sludge (CAS) system). Experimental design was performed by response surface methodology (RSM) to assess the effect of two independent numerical factors i.e. hydraulic retention time (HRT) and mixed liquor volatile suspended solids (MLVSS) on nine responses.From the overall results, it was found that CAS-MBR performed better than AS-MBR.The CAS-MBR achieved 94.9% of TCOD removal efficiency at 24 h of HRT and MLVSS concentration of 10000 mg.L 1. Compared to AS-MBR, CAS-MBR showed higher percentage of removal efficiency for total nitrogen andtotal Kjeldahl nitrogen. Moreover, CAS-MBR recorded the lowest SVI value of 55 mL.mg 1compared to AS-MBR. Additional microfiltration has increased the TCOD removal in both systems. As a conclusion, the CAS-MBR operated at the same condition showed higher treatment capacityin compare to AS-MBR.
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