膜科学与技术

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Study on the application of active cross-flow membrane equipment in the MBR process of sewage treatment

Authors： LIU Haoliang,GENG Anchao

Units： College of Ocean Environment and Engineering, Shanghai Maritime University, Shanghai 201306, China

KeyWords： membrane separation equipment; cross-flow operation; MBR process; domestic sewage; advanced treatment

ClassificationCode：TQ051.8+93

year,volume(issue):pagination： 2013,33(6):97-101

Abstract：

An independent research on active cross-flow membrane separation equipment was used in anaerobic/anoxic/oxic process (A/A/O) to treat urban sewage. The membrane device was directly installed in the aeration tank, and it implemented active cross-flow filtration by programmed rotation operation. The experimental results demonstrated that the effluent COD and NH4+- N were below 40 mg/L and 1 mg/L. The removal rate of COD and NH4+- N were 91.3% and 98%, respectively. Cake layer could be prevented effectively because of fluid shear force on the membrane surface and powerful turbulence generated in the device rotation in the case of sludge concentration up to 16000 mg/L. The speed of membrane fouling was significantly slowed down, and membrane equipment showed excellent anti-blocking and anti-pollution ability. During the experiment, the membrane flux remained stable and the operating pressure of the membrane increased slowly. The chemical cleaning cycle was selected for 80 days without any maintenance cleaning. The operation energy consumption of the membrane equipment could reduce 60% than traditional aeration operation.

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AuthorIntro：

刘浩亮（1989- ），男，湖北人，硕士，从事膜设备处理生活污水研究. 联系方式：jacklhlchina@163.com.通讯作者：耿安朝（1962- ），男，教授，主要从事水处理与膜分离技术研究. 电子邮箱：genganchao@163.com

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