期刊
BIORESOURCE TECHNOLOGY
卷 113, 期 -, 页码 136-142出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2012.02.007
关键词
PAC; MBR; Slightly polluted surface water; Membrane fouling; Low temperature
资金
- China National Nature Science Foundation [50978068]
- International Science and Technology Cooperation Project, China [2010DFA92460]
- International Science and Technology Cooperation Project, Japan [2010DFA92460]
- International Science and Technology Cooperation Project, Korea [2010DFA92460]
- China National Water Pollution Control and Management Technology of Major Project [2009ZX07424-005]
In this study, different concentrations of PAC combined with MBR were carried out to treat slightly polluted surface water (SPSW) at low temperature (10 degrees 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 degrees 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. (C) 2012 Elsevier Ltd. All rights reserved.
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