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Study on the Influencing Factors of Oxygen Transfer Rate of the Membrane in Membrane Aerated Biofilm Reactor

Authors： Bao Jinfeng,Zhu Pinshang,Zhu Yuanyuan,Wu Kai,Xie Huifeng,Huang Xia

Units： 1 Zhejiang Kaichuang Env.Tech.Co, Ltd., Hangzhou, 310000, China; 2 Hangzhou Yuhang Water Holding Group Co. Ltd., Hangzhou, 310000; 3 Tsinghua Uniwersity, School of Environment, Beijing, 100084, China

KeyWords： membrane aerated biofilm reactor; oxygen transfer rate; concentration difference; influence factors

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2023,43(2):123-127

Abstract：

The oxygen transfer rate (OTR) of the membrane in membrane aerated biofilm reactor (MABR) has a great significance to the design of the MABR process. Factors affecting the OTR of the membrane in MABR were studied in this paper through a laboratory scale test. The results showed that under the same operating conditions the parallel connection mode of membrane modules had a faster OTR than the series connection mode. The average OTR of the membrane increased firstly and then gradually became stable with the increased air flow, increased slightly with the increased air pressure, had a little change with the elevated temperature, and decreased with the increased DO in water. The membrane in MABR had a certain oxygen transfer capacity after the air supply was stopped. Under the conditions of membrane modules connected in parallel, gas pressure of 2 kPa, and air flow of 100 mL·min-1, the average OTR reached as high as 12.7 g O2·m-2·d-1.

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AuthorIntro：

包进锋（1972-）浙江金华人，主要研究方向为污水处理技术，E-mail：baojf@zjkchb.com

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