PUShu-juan,DUZhi-li,WEIBi-gui,et al.Treatment Efficiency and Nitrogen Metabolism Pathways in Municipal Wastewater Treatment Using AOA-SBFASR[J].China Water & Wastewater,2025,41(5):27-35.
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Treatment Efficiency and Nitrogen Metabolism Pathways in Municipal Wastewater Treatment Using AOA-SBFASR

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第41卷 Number: 第5期 Page: 27-35 Column: Date of publication: 2025-03-01
Author(s):
PU　Shu-juan1;  DU　Zhi-li2;  WEI　Bi-gui1;  ZHANG　Rui-jian2;  WANG　Qian-bin2;  DONG　Hao-tao2;  LIU　Ying-shi2
（1. School of Environmental and Municipal Engineering， Lanzhou Jiaotong University， Lanzhou 730070， China； 2. Guangzhou Municipal Engineering Design & Research Institute Co. Ltd.， Guangzhou 510098， China）
Keywords:
AOA-SBFASR process;  municipal wastewater;  advanced nitrogen removal;  microbial community;  nitrogen metabolic pathway
Abstract:
The anoxic-oxic-anoxic sequencing batch fixed biofilm coupled activated sludge reactor (AOA-SBFASR) was constructed for a pilot study on the treatment of municipal wastewater. The advanced nitrogen removal efficacy of the reactor was investigated, while the microbial communities as well as the nitrogen metabolism pathways within the system were analyzed. The AOA-SBFASR process demonstrated significant efficacy in the removal of COD, NH4+-N, and TN from wastewater, achieving removal efficiencies of 92.55%, 98.75%, and 75.64%, respectively. Within a period of 55 days, the microbial community composition underwent significant changes, with an observed increase in the relative abundance of nitrifying bacteria, denitrifying bacteria, and microorganisms capable of degrading refractory organic matters. Ammonia nitrogen was primarily eliminated through the complete nitrification process, while nitrate nitrogen was predominantly removed via denitrification and dissimilatory nitrate reduction processes.
Last Update: 2025-03-01