TY - JOUR
T1 - 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
AU - Rong, Chao
AU - Luo, Zibin
AU - Wang, Tianjie
AU - Guo, Yan
AU - Kong, Zhe
AU - Wu, Jiang
AU - Ji, Jiayuan
AU - Qin, Yu
AU - Hanaoka, Taira
AU - Sakemi, Shinichi
AU - Ito, Masami
AU - Kobayashi, Shigeki
AU - Kobayashi, Masumi
AU - Li, Yu You
N1 - Funding Information:
The Ministry of the Environment, Japan, is acknowledged for funding this study. This work is a part of a national project entitled innovative sewage treatment system for energy saving and energy production supported by the Low Carbon Technology Research and Development Program.
Publisher Copyright:
© 2021
PY - 2021/12
Y1 - 2021/12
N2 - 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.
AB - 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.
KW - Anaerobic membrane bioreactor
KW - Energy saving
KW - Municipal wastewater treatment
KW - Partial nitritation-anammox
KW - Pilot-scale plant
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U2 - 10.1016/j.biortech.2021.125840
DO - 10.1016/j.biortech.2021.125840
M3 - Article
C2 - 34469821
AN - SCOPUS:85113732908
SN - 0960-8524
VL - 341
JO - Bioresource Technology
JF - Bioresource Technology
M1 - 125840
ER -
