Simultaneous nitrification and denitrification by EPSs in aerobic granular sludge enhanced nitrogen removal of ammonium-nitrogen-rich wastewater

被引：81
|
作者：
Yan, Lilong [1 ]
Zhang, Shaoliang [1 ]
Hao, Guoxin [1 ]
Zhang, Xiaolei [1 ]
Ren, Yuan [2 ]
Wen, Yan [1 ]
Guo, Yihan [1 ]
Zhang, Ying [1 ]
机构：
[1] Northeast Agr Univ, Sch Resource & Environm, Harbin 150030, Peoples R China
[2] Harbin Inst Technol, Sch Municipal & Environm Engn, Harbin 150090, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2016年 / 202卷
基金：
中国国家自然科学基金;
关键词：
EPSs in aerobic granular sludge; Adsorbed various nitrogen forms; Simultaneous nitrification and; denitrification; Enhanced nitrogen removal; EXTRACELLULAR POLYMERIC SUBSTANCES; ADSORPTION; EXTRACTION; OXIDATION; EXOPOLYSACCHARIDES; BINDING; REACTOR; METAL;
D O I：
10.1016/j.biortech.2015.11.088
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
In this study, role of extracellular polymeric substances (EPSs) in enhancing nitrogen-removal from ammonium-nitrogen-rich wastewater using aerobic granular sludge (AGS) technology were analyzed. AGS enabled ammonium oxidation and denitrification to occur simultaneously. Air stripping and simultaneous nitrification-denitrification contributed to total-nitrogen removal. Clone-library analysis revealed that close relatives of Nitrosomonas eutropha and heterotrophic denitrifiers were dominant in the AGS, whereas anammox bacteria were not detected. EPSs adsorption of ammonium, nitrite, and nitrate nitrogen results in improved removal of nitrogen in batch experiments. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：101 / 106
页数：6
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