Performance of an autotrophic denitrification process with mixed electron donors and a functional microbial community-Reference-Cited by-同舟云学术

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

Published:2018-05-07 Issue:2 Volume:19 Page:434-443
ISSN:1606-9749
Container-title:Water Supply
language:en
Short-container-title:

Author:

Luo Xianxin¹,Su Junfeng²³,Liu Han¹,Huang Tinglin²,Wei Li³,Nie Jiawei¹,Gao Hanyu¹,Li Dongpeng¹

Affiliation:

1. Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China and College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, China

2. School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China

3. State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China

Abstract

Abstract 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.

Publisher

IWA Publishing

Subject

Water Science and Technology

Link

http://iwaponline.com/ws/article-pdf/19/2/434/663016/ws019020434.pdf

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