High concentration powdered activated carbon-membrane bioreactor (PAC-MBR) for slightly polluted surface water treatment at low temperature

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• 作者：Cong Ma^b ; ^c ; Shuili Yu^a ; ^b ; ^{macong@hit.edu.cn} ; ^{hit.macong@gmail.com} ; Wenxin Shi^b ; Wende Tian^b ; ^c ; S.G.J. Heijman^c ; L.C. Rietveld^c
• 关键词：PAC ; MBR ; Slightly polluted surface water ; Membrane fouling ; Low temperature
• 刊名：Bioresource Technology
• 出版年：2012
• 期刊代码：11_09608524
• 类别：ce
• 出版时间：June, 2012
• 卷：113
• 期：Complete
• 页码：136-142
• 文件大小：647 K

摘要

In this study, different concentrations of PAC combined with MBR were carried out to treat slightly polluted surface water (SPSW) at low temperature (10 掳C). Effects of PAC on the efficiencies of operation, treatment, and the performance of the process were investigated. It was found that the effluent quality, performance efficiency, resistance of shock load were all enhanced and chemical irreversible membrane fouling was reduced with increasing dosage of PAC in MBR. Only when the concentration of PAC which acted as biological carriers was high enough (i.g., 50 g/L), nitrification without initial inoculation in the filtration tank could start within 19 days and be completed within 35 days at 10 掳C. Fifty grams per liter PAC was the optimal dosage in MBR for stable and extended operation. Under this condition, mean removal efficiencies of ammonia nitrogen (NH₃-N), dissolved organic carbon (DOC) and UV₂₅₄ were 93%, 75%, and 85%, respectively.