Performance of an autotrophic denitrification process with mixed electron donors and a functional microbial community

被引：8
|
作者：
Luo, Xianxin [1 ,2 ]
Su, Junfeng [3 ,4 ]
Liu, Han [1 ,2 ]
Huang, Tinglin [3 ]
Wei, Li [4 ]
Nie, Jiawei [1 ,2 ]
Gao, Hanyu [1 ,2 ]
Li, Dongpeng [1 ,2 ]
机构：
[1] Nanchang Hangkong Univ, Key Lab Jiangxi Prov Persistent Pollutants Contro, Nanchang 330063, Jiangxi, Peoples R China
[2] Nanchang Hangkong Univ, Coll Environm & Chem Engn, Nanchang 330063, Jiangxi, Peoples R China
[3] Xian Univ Architecture & Technol, Sch Environm & Municipal Engn, Xian 710055, Shaanxi, Peoples R China
[4] Harbin Inst Technol, Sch Municipal & Environm Engn, State Key Lab Urban Water Resource & Environm, Harbin 150090, Heilongjiang, Peoples R China
来源：
WATER SUPPLY | 2019年 / 19卷 / 02期
基金：
中国国家自然科学基金;
关键词：
autotrophic denitrification; microbial community; mix electron donors; nitrate; HYDROGENOTROPHIC DENITRIFICATION; NITRATE; GROUNDWATER; OXIDATION; REDUCTION; BACTERIUM; REMOVAL; NITRITE; WATER;
D O I：
10.2166/ws.2018.088
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A moving bed biofilm reactor (MBBR) using Mn(II) and Fe(II) as mixed electron donors was designed for nitrate removal. The optimal state, as determined by response surface methodology, was an Fe(II):Mn(II) molar ratio of 0.62, electron donor: electron acceptor molar ratio of 2.62 and hydraulic retention time of 10.88 h. Subsequently, the MBBR was applied to groundwater treatment and demonstrated a final nitrate-N removal efficiency of 99.5% with a nitrite-N accumulation rate of 0.0706 mg-N.L-1.h(-1). Furthermore, high-throughput sequencing was employed to characterize bacterial communities in the MBBR. Results showed that the genera of Pseudomonas and Acinetobacter may make a contribution to the nitrate removal.
引用
收藏
页码：434 / 443
页数：10
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