Large pilot-scale submerged anaerobic membrane bioreactor for the treatment of municipal wastewater and biogas production at 25 °C

Zhe Kong, Jiang Wu, Chao Rong, Tianjie Wang, Lu Li, Zibin Luo, Jiayuan Ji, Taira Hanaoka, Shinichi Sakemi, Masami Ito, Shigeki Kobayashi, Masumi Kobayashi, Yu Qin, Yu You Li

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The aim of this work was to demonstrate the operation of a large pilot-scale submerged anaerobic membrane bioreactor (5.0 m3) for biogas production from municipal wastewater at ambient temperature of 25 °C. To the best of our knowledge, this is the largest one-stage submerged AnMBR that has ever been reported. This AnMBR realized a hydraulic retention time (HRT) of 6 h and a treatment capacity of 20 m3 d-1, obtaining excellent effluent quality with COD removal efficiency over 90% and BOD5 removal over 95%. The biogas yield of the AnMBR was 0.25–0.27 L g−1 removed COD and 0.09–0.10 L L-1 raw wastewater. The methane content of the biogas was at the range of 75%-81%. The COD and nitrogen mass balance were also identified based on long-term operation. The hollow-fiber membrane module realized a flux of 2.75–17.83 LMH. An online backwash chemical cleaning system helped to lower the transmembrane pressure timely.

Original languageEnglish
Article number124123
JournalBioresource Technology
Volume319
DOIs
Publication statusPublished - 2021 Jan

Keywords

  • AnMBR
  • Anaerobic digestion
  • Demonstration, biogas
  • Mass balance
  • Municipal wastewater

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

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