Effect of seed sludge on nitrogen removal in a novel upflow microaerobic sludge reactor for treating piggery wastewater

被引：21
|
作者：
Meng, Jia [1 ]
Li, Jiuling [1 ]
Li, Jianzheng [1 ]
Wang, Cheng [1 ]
Deng, Kaiwen [1 ]
Sun, Kai [1 ]
机构：
[1] Harbin Inst Technol, Sch Municipal & Environm Engn, State Key Lab Urban Water Resource & Environm, 73 Huanghe Rd, Harbin 150090, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2016年 / 216卷
基金：
中国国家自然科学基金;
关键词：
Piggery wastewater; Microaerobic process; Nitrogen removal; Seed sludge; Microbial community structure; LOW COD/TN RATIO; MICROBIAL COMMUNITY; MANURE; DENITRIFICATION; PERFORMANCE; REDUCTION; NITRITE; NITRIFICATION; POPULATIONS; BIOREACTOR;
D O I：
10.1016/j.biortech.2016.05.034
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Anaerobic activated sludge (AnaS) and aerobic activated sludge (AerS) were used to start up a novel upflow microaerobic sludge reactor (UMSR), respectively, and the nitrogen removal in the two reactors were evaluated when treating low C/N ratio manure-free piggery wastewater with a COD/TN ration of about 0.85. With the same hydraulic retention time 8 h and TN loading rate (NLR) 0.42 kg/(m(3) d), the UMSR (R2) inoculated with AerS could reach its steady state earlier and obtained a better TN removal than that in the UMSR (R1) inoculated with AnaS. However, the accumulated AnaS made R1 show a better capability in bearing shock load and demonstrated an excellent NH4+-N and TN removal with a NLR as high as 1.07 kg/(m(3) d). Microbial community structure of the accumulated AerS and AnaS were observable different. The decreased proportion of nitrifiers restricted the ammonium oxidation in R2, and resulting in a decrease in TN removal. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：19 / 27
页数：9
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