ZHANGQiang,LIYi,XIAHai-xia,et al.MABR Application for In-situ Upgrading of Yanerwan WWTP in Lanzhou[J].China Water & Wastewater,2025,41(2):101-104.
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MABR Application for In-situ Upgrading of Yanerwan WWTP in Lanzhou

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第41卷 Number: 第2期 Page: 101-104 Column: Date of publication: 2025-01-17
Author(s):
ZHANG　Qiang1; 2;  LI　Yi1;  XIA　Hai-xia1;  LI　Wei1; 3;  LUO　Ping1;  LIU　Chen1
（1. Beijing ENFI Environmental Protection Co. Ltd.， Beijing 100038， China； 2. College of Water Sciences， Beijing Normal University， Beijing 100875， China； 3. School of Environment， Tsinghua University， Beijing 100084， China）
Keywords:
upgrading and reconstruction;  MABR process;  enhanced nitrogen removal
Abstract:
The line 1 upgrading project of the Yanerwan wastewater treatment plant (WWTP) in Lanzhou encompasses a scale of 2×104 m3/d. Adhering to the imperatives of in-situ upgrading, non-augmentation of pool wall loads, and reinforced denitrification capabilities, the membrane-aerated biofilm reactor (MABR) process is adopted to improve the effluent quality to the first level A criteria in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). The project primarily involved overlaying design of new biofilm areas using MABR membrane modules and reorganization of indigenous functional zones to strengthen biochemical treatment efficacy. As the first 10 000 m3/d MABR municipal wastewater upgrading project in China, this project required no civil construction and water cessation. One year of monitoring revealed that the effluent quality post?upgrade met the level A standard, with an average TN concentration of 8.21 mg/L, without additional carbon source. Additionally, operational costs decreased by approximately 0.103 yuan/m3, saving operation cost of about 750 000 yuan/a.
Last Update: 2025-01-17