Chemical oxygen demand and nitrogen transformation in a large pilot-scale plant with a combined submerged anaerobic membrane bioreactor and one-stage partial nitritation-anammox for treating mainstream wastewater at 25 °C

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

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

A novel municipal wastewater treatment process towards energy neutrality and reduced carbon emissions was established by combining a submerged anaerobic membrane bioreactor (SAnMBR) with a one-stage partial nitritation-anammox (PN/A), and was demonstrated at pilot-scale at 25 °C. The overall COD and BOD5 removal efficiencies were 95.1% and 96.4%, respectively, with 20.3 mg L−1 COD and 5.2 mg L−1 BOD5 remaining in the final effluent. The total nitrogen (TN) removal efficiency was 81.7%, resulting 7.3 mg L−1 TN was discharged from the system. The biogas yield was 0.222 NL g−1 COD removed with a methane content range of 78–81%. Approximately 90% of influent COD was removed in the SAnMBR, and 70% of influent nitrogen was removed in the PN/A. The denitrification which occurred in the PN/A enhanced overall COD and nitrogen removal. The successful operation of this pilot-scale plant indicates the SAnMBR-PN/A process is suitable for treating real municipal wastewater.

Original languageEnglish
Article number125840
JournalBioresource Technology
Volume341
DOIs
Publication statusPublished - 2021 Dec

Keywords

  • Anaerobic membrane bioreactor
  • Energy saving
  • Municipal wastewater treatment
  • Partial nitritation-anammox
  • Pilot-scale plant

ASJC Scopus subject areas

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

Fingerprint

Dive into the research topics of 'Chemical oxygen demand and nitrogen transformation in a large pilot-scale plant with a combined submerged anaerobic membrane bioreactor and one-stage partial nitritation-anammox for treating mainstream wastewater at 25 °C'. Together they form a unique fingerprint.

Cite this