Impact of sandwich-type composite anodic membrane on membrane fouling and methane recovery from sewage sludge and food waste via electrochemical anaerobic membrane bioreactor

作者：Han, Yule; Cai, Teng; Yin, Jian; Li, Wanjiang; Li, Siqin; Qiu, Boran; Lu, Xueqin; Zhou, Yan; Zhen, Guangyin^*

来源：Bioresource Technology, 2023, 382: 129222.

DOI：10.1016/j.biortech.2023.129222

• Membrane fouling
• Electrochemical anaerobic membrane
• bioreactor
• Methane production
• Municipal organic waste treatment
• Energy recovery

Membrane fouling presents a big challenge for the real-world implementation of anaerobic membrane bio-reactors (AnMBRs) in digesting high-solid biowastes. In this study, an electrochemical anaerobic membrane bioreactor (EC-AnMBR) with a novel sandwich-type composite anodic membrane was designed and constructed for controlling membrane fouling whilst improving the energy recovery. The results showed that EC-AnMBR produced a higher methane yield of 358.5 & PLUSMN; 74.8 mL/d, rising by 12.8% compared to the AnMBR without applied voltage. Integration of composite anodic membrane induced a stable membrane flux and low trans -membrane pressure through forming an anodic biofilm while total coliforms removal reached 97.9%. The mi-crobial community analysis further provided compelling evidence that EC-AnMBR enriched the relative abundance of hydrolyzing (Chryseobacterium 2.6%) bacteria and methane-producing (Methanobacterium 32.8%) archaea. These findings...the new EC-AnMBR.

• 单位
  南阳理工学院