Effects of temperature on anammox performance and community structure

被引：123
|
作者：
He, Shilong [1 ]
Chen, Yi [1 ]
Qin, Meng [1 ]
Mao, Zhen [1 ]
Yuan, Limei [1 ]
Niu, Qigui [2 ]
Tan, Xicheng [1 ]
机构：
[1] China Univ Min & Technol, Sch Environm & Spatial Informat, Xuzhou 221116, Peoples R China
[2] Shandong Univ, Sch Environm Sci & Engn, 27 Shanda South Rd, Jinan 250100, Shandong, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2018年 / 260卷
关键词：
Anammox; Temperature; UASB; SAA; Ca; Kuenenia; ANAEROBIC AMMONIUM OXIDATION; EXTRACELLULAR POLYMERIC SUBSTANCES; NITROGEN REMOVAL; PARTIAL NITRITATION; PROCESS STABILITY; ACTIVATED-SLUDGE; UASB REACTOR; WASTE-WATER; SHORT-TERM; BACTERIA;
D O I：
10.1016/j.biortech.2018.03.090
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
A lab-scale anammox up-flow anaerobic sludge blanket (UASB) reactor was run to investigate the influence of temperature on anammox performance and community structure. The anammox system had a higher substrate tolerance at 13 degrees C than at 18 degrees C. The adverse effects caused by the use of a lower temperature (8 degrees C) could be restored. The nitrogen removal rate (NRR) decreased with decreasing in situ specific anammox activity (SAA). Interestingly, the ex situ SAA acclimated at 23 degrees C, when exposed to ex situ temperatures of 33 and 28 degrees C, was higher than for those acclimated at 33 and 28 degrees C. No shift was observed in the optimum temperature for ex situ SAA in the whole lowering process of anammox UASB. More extracellular polymeric substances were produced in response to cooler conditions (18 degrees C and 13 degrees C). Ca. Kuenenia became much more abundant (55.18% of the microbial community) and had a competitive advantage over other anammox bacteria (AnAOB) at 13 degrees C.
引用
收藏
页码：186 / 195
页数：10
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