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Study on Treating Municipal Wastewater by Using a Submerged Novel Polyvinyl Chloride（PVC）Membrane Bioreactor

Authors： BAI Xinzheng，CHEN Qing，YU Yubin

Units： Suzhou Litree Purifying Techology Co. Ltd.，Suzhou 215152，China

KeyWords： MBR; Ultrafiltration membrane(PVC); Municipal wastewater; membrance fouling control

ClassificationCode：X703

year,volume(issue):pagination： 2015,35(4):72-76

Abstract：

A submerged polyvinyl chloride（PVC）membrane bioreactor (MBR) （PVC-MBR）was used to treat municipal wastewater. The long-term performance, operational state and membrane cleaning of the novel PVC-MBR was investigated systematically. The MBR showed better removals of the main pollutants, such as COD , NH4+-N, T-P and turbidity. The removal efficiencies for COD and NH4+-N were above 90%, and 95%, respectively. The average T-P effluent concentration was less than 0.5 mg/L when chemical coagulation was used in the process. The turbidity of membrane permeate was less than 0.1 NTU. The MBR permeate could meet Chinese reuse standard (GB/T 18920－2002). The membrane system was stable as the TMP was less than -35 KPa at the flux of 20 L/(m2.h). Chemical cleaning was adopted by 1000ppm NaClO mixed with 0.2% NaOH after operating 195 days , and the results showed that TMP conditions of MBR system was recovered to the level of the new one after the cleaning.

Funds：

国家“十二五”水体污染控制与治理科技重大专项项目资助（2011ZX07317-002-2）

AuthorIntro：

白新征（1977-），男，新疆五家渠，本科，水处理工程师；研究方向：从事膜技术研究开发和水处理技术应用。

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