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CLC number: X703.1

On-line Access: 2019-07-04

Received: 2019-01-08

Revision Accepted: 2019-05-24

Crosschecked: 2019-06-12

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Shu-wen Du


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Journal of Zhejiang University SCIENCE A 2019 Vol.20 No.7 P.533-545


Microbial dynamics and performance in a microbial electrolysis cell-anaerobic membrane bioreactor

Author(s):  Shu-wen Du, Chao Sun, A-qiang Ding, Wei-wang Chen, Ming-jie Zhang, Ran Cheng, Dong-lei Wu

Affiliation(s):  Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310027, China; more

Corresponding email(s):   wudl@zju.edu.cn

Key Words:  Microbial electrolytic cell-anaerobic membrane bio-reactor (MEC-AnMBR), Chemical oxygen demand (COD) removal efficiency, Methane production, Membrane fouling, Microbial mechanism

Shu-wen Du, Chao Sun, A-qiang Ding, Wei-wang Chen, Ming-jie Zhang, Ran Cheng, Dong-lei Wu. Microbial dynamics and performance in a microbial electrolysis cell-anaerobic membrane bioreactor[J]. Journal of Zhejiang University Science A, 2019, 20(7): 533-545.

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author="Shu-wen Du, Chao Sun, A-qiang Ding, Wei-wang Chen, Ming-jie Zhang, Ran Cheng, Dong-lei Wu",
journal="Journal of Zhejiang University Science A",
publisher="Zhejiang University Press & Springer",

%0 Journal Article
%T Microbial dynamics and performance in a microbial electrolysis cell-anaerobic membrane bioreactor
%A Shu-wen Du
%A Chao Sun
%A A-qiang Ding
%A Wei-wang Chen
%A Ming-jie Zhang
%A Ran Cheng
%A Dong-lei Wu
%J Journal of Zhejiang University SCIENCE A
%V 20
%N 7
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%D 2019
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1900009

T1 - Microbial dynamics and performance in a microbial electrolysis cell-anaerobic membrane bioreactor
A1 - Shu-wen Du
A1 - Chao Sun
A1 - A-qiang Ding
A1 - Wei-wang Chen
A1 - Ming-jie Zhang
A1 - Ran Cheng
A1 - Dong-lei Wu
J0 - Journal of Zhejiang University Science A
VL - 20
IS - 7
SP - 533
EP - 545
%@ 1673-565X
Y1 - 2019
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1900009

membrane fouling restricts the wide application of anaerobic membrane bio-reactors (AnMBRs). In this study, a microbial electrolytic cell (MEC)-AnMBR biosystem was constructed to relieve membrane fouling. Total chemical oxygen demand (COD) removal efficiency and methane production in MEC-AnMBR were increased to 6.7% and 77.1%, respectively, in comparison to AnMBR. The membrane fouling of MEC-AnMBR was greatly lessened by the slower growth of extracellular polymeric substances (EPS) and soluble microbial products (SMP). High-throughput sequencing analysis showed that Synergistaceae-uncultured and Thermovirga were enriched in MEC-AnMBR, and Thermovirga was found as the key functional microorganism. These results indicated that MEC-AnMBR could simultaneously enhance the reactor efficiency and mitigate membrane fouling.

The authors investigated coming MEC with AnMBR. It is an innovative idea with great real-world application potential. The analysis is thorough, and the presentation of findings is clear.


创新点:1. 将MEC与AnMBR耦合,构建MEC-AnMBR系统用于高浓度有机废水的处理; 2. 研究反应器运行和微生物群落之间的关系; 3. 探究膜污染运行周期中各膜污染阶段微生物代谢产物与自身代谢活性的变化规律.
方法:1. 启动和运行MEC-AnMBR反应器,并与传统AnMBR对照,综合考察MEC-AnMBR反应器的运行性能; 2. 利用高通量测序技术对传统AnMBR和MEC-AnMBR各膜污染阶段的阴极膜表面微生物群落结构及多样性进行研究,并综合分析MEC-AnMBR反应器的运行特性与微生物群落间的相互关系; 3. 对MEC-AnMBR反应器阴极膜组件及微生物分泌物进行原位观察,并研究其在膜污染运行周期中各膜污染阶段微生物代谢产物与自身代谢活性的变化规律.
结论:1. 成功构建微生物电解池MEC-AnMBR生物系统; 2. 与AnMBR相比,MEC-AnMBR中的化学需氧量(COD)去除效率和甲烷产量分别增加6.7%和77.1%; 3. 与AnMBR相比,MEC-AnMBR 的膜污染因细胞外聚合物和可溶性微生物产物增长缓慢而大大减少; 4. 高通量测序分析表明MEC-AnMBR富含互养菌属(Synergistaceae-uncultured)和互营热菌属(Thermovirga),而Thermovirga是关键的功能性微生物; 5. 这些结果表明MEC-AnMBR可同时提高反应器效率并减轻膜污染.

关键词:微生物电解池; COD去除效率; 甲烷产量; 膜污染; 微生物特性

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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