Journal of Zhejiang University-SCIENCE A

, Volume 20, Issue 7, pp 533–545 | Cite as

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

  • Shu-wen Du
  • Chao Sun
  • A-qiang Ding
  • Wei-wang Chen
  • Ming-jie Zhang
  • Ran Cheng
  • Dong-lei WuEmail author


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.

Key words

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



目的:将微生物电解池(MEC)与厌氧膜生物反应器 (AnMBR)耦合,构建MEC-AnMBR 系统,以 期同步实现污水高效处理和膜污染缓解,推动膜 生物反应器的理论创新和技术创新。

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(Synergistaceaeuncultured) 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。


微生物电解池 COD 去除效率 甲烷产量 膜污染 微生物特性 

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Copyright information

© Zhejiang University and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Environmental Engineering, College of Environmental and Resource SciencesZhejiang UniversityHangzhouChina
  2. 2.Shanghai SUS Environment Co., Ltd.ShanghaiChina

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