WANGJian,HUANGYi-long,DUPeng-hui,et al.APO/M Process and Its Application in Municipal Sewage Treatment Based on River Ecological Replenishment[J].China Water & Wastewater,2023,39(4):101-107.
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APO/M Process and Its Application in Municipal Sewage Treatment Based on River Ecological Replenishment

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第39卷 Number: 第4期 Page: 101-107 Column: Date of publication: 2023-02-17
Author(s):
WANG　Jian1; 2;  HUANG　Yi-long2;  DU　Peng-hui2;  GUAN　Yun-tao1;  JING　Rui-ying2;  LI　Jia-qi2;  CHEN　Lang2;  LU　Qiao-hui2;  WU　Jing-hua2
（1. Tsinghua Shenzhen International Graduate School， Shenzhen 518055， China； 2. Guangdong Provincial Engineering and Technology Research Center for Water Affairs Big Data and Water Ecology， Shenzhen Water Planning and Design Institute Co. Ltd.， Shenzhen 518008， China）
Keywords:
enhanced phosphorus removal;  deoxygenation section;  APO/M;  rain-source river;  ecological replenishment
Abstract:
An ecological replenishment recycling plant with capacity of 2×104 m3/d is constructed taking a multi-stage aerobic enhanced phosphorus removal technology (APO/M) as the primary process, according to the water quality requirements of ecological replenishment for rain-source rivers in Shenzhen. The engineering practice shows that the advanced treatment of sewage with the primary process of APO/M technology presents a prominent effect, and the removal rates of COD, NH3-N, TP, and SS achieved more than 90%, which meet level quasi-Ⅲ (except total nitrogen) in Environmental Quality Standard for Surface Water(GB 3838-2002). The effluent of the process can be used for river ecological replenishment with the technical advantages of low investment and operation cost, compact and small footprint, stability and impact load resistance. The synchronous study illustrates that the special deoxygenation section in the APO/M process realizes the coordination of the AP tank, O tank, and M tank, which reaches the target requirements of ecological water replenishment. The addition of deoxygenation section (HRT=1 h) effectively achieved the dissolved oxygen gradient of AP tank and O tank, and reduced the total residence time of AP tank and O tank.
Last Update: 2023-02-17