膜科学与技术

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Study on the performance of municipal wastewater treatment
by short process based on MABR

Authors： LIU Mengmeng, PENG Mengwen, WANG Dianchang, YIN Wei, ZHU Xiangdong, LIU Longzhi, ZHOU Xiaoguo, CHEN Yasong

Units： 1. National Engineering Research Center of Eco-Environment in the Yangtze River Economic Belt, Wuhan 430014, China; 2. Yangtze Ecology and Environment Co., Ltd., Wuhan 430010, China

KeyWords： membrane aerated biofilm reactor(MABR); simultaneous nitrification and denitrification; municipal wastewater; oxygen mass transfer; short-process nitrogen removal

ClassificationCode：X703 ； TQ028

year,volume(issue):pagination： 2025,45(6):116-125

Abstract：

In this study, a 100 m3/d MABR pilot plant was built. Through the actual municipal sewage treatment, the rationality of process design and system operation effect were explored, and the MABR nitrogen removal contribution, oxygen mass transfer characteristics and correlation with environmental factors were analyzed. The results showed that: MABR could complete microbial film hanging within one month, and the reflux point in the process system was set at the back end of the MABR unit, and the internal and external reflux ratio was maintained at about 100%, which could avoid the dilution of influent ammonia nitrogen, thereby increasing the nitrification rate (NR) of MABR, and enhancing the simultaneous nitrification and denitrification effect of the MABR unit; During operation, the nitrification rate of MABR reached (2.75±1.13) g N/(m2·d), and the nitrogen removal contribution of MABR unit accounted for 20.42%±7.97% of the total nitrogen removal amount. oxygen transfer efficiency (OTE) and oxygen transfer rate (OTR) reached 33.36%±10.75% and (10.85±2.88) g O2/(m2·d), respectively. It is proved that MABR has strong oxygen mass transfer property. Under the condition of short biochemical residence time (HRT=10.81 h), the effluent index was better than the Class A standard (TN<10 mg/L) of the local standard of Jiangsu province, “Pollutant Discharge Standard for Urban Sewage Treatment Plants” (DB 32/4440-2022).

Funds：

国家重点研发计划资助项目(2023YFC3207601)；中国长江三峡集团有限公司科研项目资助(NBWL202300013)

AuthorIntro：

柳蒙蒙(1992-)，男，河北衡水人，高级工程师，博士，主要研究方向为污废水处理及资源化利用.

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