一种新型好氧-微氧联合工艺处理无粪猪场废水的性能及脱氮机制
Performance and nitrogen removal mechanism in a novel aerobic-microaerobic combined process treating manure-free piggery wastewater.
作者信息
Tian Yajie, Li Jianzheng, Fan Yiyang, Li Jiuling, Meng Jia
机构信息
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 73 Huanghe Road, Harbin 150090, PR China.
Australian Centre for Water and Environmental Biotechnology, The University of Queensland, Brisbane, QLD 4072, Australia.
出版信息
Bioresour Technol. 2022 Feb;345:126494. doi: 10.1016/j.biortech.2021.126494. Epub 2021 Dec 6.
A novel combined sequencing batch reactor (SBR) - up-flow microaerobic sludge reactor (UMSR) process was developed to treat manure-free piggery wastewater characterized by low COD/TN ratio and high NH-N. The front-end SBR was designed to get an effluent with COD/TN ≤ 1 by removing COD, allowing the back-end UMSR to practice anammox for the simultaneous removal of TN and NH-N. Fed with the raw piggery wastewater, the combined SBR-UMSR process was started up at 27℃ with a reflux ratio of 15:1 in the UMSR. After 230-days running, the removal of COD, TN, and NH-N in the combined SBR-UMSR process reached 78.41%,85.05%, and 92.21%, respectively. 50.22% of COD in the wastewater was removed in the SBR, while 87.11% of NH-N and 79.69% of TN were removed in the UMSR. Stoichiometry and bacterial function analysis revealed that the partial nitrification - anammox process was the dominant nitrogen removal approach in the UMSR.
开发了一种新型的序批式反应器（SBR）与上流式微氧污泥反应器（UMSR）组合工艺，用于处理无粪便猪场废水，该废水具有低COD/TN比和高氨氮的特点。前端SBR旨在通过去除COD获得COD/TN≤1的出水，使后端UMSR能够进行厌氧氨氧化以同时去除TN和氨氮。以猪场原废水为进水，SBR-UMSR组合工艺在27℃下启动，UMSR的回流比为15:1。经过230天的运行，SBR-UMSR组合工艺中COD、TN和氨氮的去除率分别达到78.41%、85.05%和92.21%。废水中50.22%的COD在SBR中被去除，而87.11%的氨氮和79.69%的TN在UMSR中被去除。化学计量和细菌功能分析表明，部分硝化-厌氧氨氧化工艺是UMSR中主要的脱氮方法。
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