Performance and nitrogen removal mechanism in a novel aerobic-microaerobic combined process treating manure-free piggery wastewater

被引：19
作者：
Tian, Yajie [1 ]
Li, Jianzheng [1 ]
Fan, Yiyang [1 ]
Li, Jiuling [2 ]
Meng, Jia [1 ]
机构：
[1] Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, 73 Huanghe Rd, Harbin 150090, Peoples R China
[2] Univ Queensland, Australian Ctr Water & Environm Biotechnol, Brisbane, Qld 4072, Australia
来源：
BIORESOURCE TECHNOLOGY | 2022年 / 345卷
基金：
中国国家自然科学基金;
关键词：
Low COD/TN ratio; High ammonium; Piggery wastewater; Combined treatment process; Nitrogen removal; LOW COD/TN RATIO; SLUDGE REACTOR; PARTIAL NITRIFICATION; MICROBIAL COMMUNITY; ANAMMOX BACTERIA; START-UP; AMMONIUM; DENITRIFICATION; EFFICIENCY; STRATEGY;
D O I：
10.1016/j.biortech.2021.126494
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
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 NH4+-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 NH4+-N. Fed with the raw piggery wastewater, the combined SBR-UMSR process was started up at 27celcius with a reflux ratio of 15:1 in the UMSR. After 230-days running, the removal of COD, TN, and NH4+-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 NH4+-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.
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页数：11
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