Achieving short-cut nitrification and denitrification in modified intermittently aerated constructed wetland | |
Hou, Jie1,2; Xia, Ling3; Ma, Tao1; Zhang, Yiqing1; Zhou, Yiyong4; He, Xugang1,2 | |
刊名 | BIORESOURCE TECHNOLOGY
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2017-05-01 | |
卷号 | 232期号:1页码:10-17 |
关键词 | Nitrogen removal pathway Intermittent aeration control Partial nitrification Vertical flow constructed wetland |
ISSN号 | 0960-8524 |
DOI | 10.1016/j.biortech.2017.02.027 |
英文摘要 | This study aim to enhance nitrogen removal performance via shifting nitrogen removal pathway from nitrate to nitrite pathway. It was demonstrated that nitrite pathway was successfully and stably achieved in CWs by using modified intermittent aeration control with aeration 20 min/non-aeration 100 min and reducing DO concentration during aeration, nitrite in the effluent could accumulate to over 70% of the total oxidized nitrogen. Q-PCR analysis showed that nitrifying microbial communities were optimized under the alternating anoxic and aerobic conditions, ammonia oxidizing bacteria increased from 7.15 x 10(6) to 8.99 x 10(6) copies/g, while nitrite oxidizing bacteria decreased approximately threefold after 234 days operation. Most importantly, high nitrogen removal efficiency with ammonium removal efficiency of 94.6%, and total nitrogen removal efficiency of 82.6% could be achieved via nitrite pathway even under carbon limiting conditions. In comparison to the nitrate pathway, the nitrite pathway could improve the TN removal by about 55%. (C) 2017 Elsevier Ltd. All rights reserved. |
资助项目 | National Natural Science Foundation of China[41230748] ; National Natural Science Foundation of China[51508219] |
WOS关键词 | MUNICIPAL WASTE-WATER ; NITROGEN REMOVAL ; DISSOLVED-OXYGEN ; FREE AMMONIA ; NITRITE ; REACTOR ; INHIBITION ; SLUDGE ; COMMUNITIES ; POPULATIONS |
WOS研究方向 | Agriculture ; Biotechnology & Applied Microbiology ; Energy & Fuels |
语种 | 英语 |
出版者 | ELSEVIER SCI LTD |
WOS记录号 | WOS:000400867100002 |
资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China |
内容类型 | 期刊论文 |
源URL | [http://ir.ihb.ac.cn/handle/342005/32276] ![]() |
专题 | 水生生物研究所_水环境工程研究中心_期刊论文 |
通讯作者 | He, Xugang |
作者单位 | 1.Huazhong Agr Univ, Coll Fisheries, Wuhan 430070, Peoples R China 2.Freshwater Aquaculture Collaborat Innovat Ctr Hub, Wuhan 430070, Peoples R China 3.Wuhan Univ Technol, Sch Resources & Environm Engn, Wuhan 430070, Peoples R China 4.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan, Hubei, Peoples R China |
推荐引用方式 GB/T 7714 | Hou, Jie,Xia, Ling,Ma, Tao,et al. Achieving short-cut nitrification and denitrification in modified intermittently aerated constructed wetland[J]. BIORESOURCE TECHNOLOGY,2017,232(1):10-17. |
APA | Hou, Jie,Xia, Ling,Ma, Tao,Zhang, Yiqing,Zhou, Yiyong,&He, Xugang.(2017).Achieving short-cut nitrification and denitrification in modified intermittently aerated constructed wetland.BIORESOURCE TECHNOLOGY,232(1),10-17. |
MLA | Hou, Jie,et al."Achieving short-cut nitrification and denitrification in modified intermittently aerated constructed wetland".BIORESOURCE TECHNOLOGY 232.1(2017):10-17. |
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