BAOYu-he,XUShu,YANGTing,et al.Performance of MABR Coupled A2O Process for Municipal Wastewater Treatment[J].China Water & Wastewater,2024,40(21):15-20.
Performance of MABR Coupled A2O Process for Municipal Wastewater Treatment
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第21期
Page:
15-20
Column:
Date of publication:
2024-11-01
- Keywords:
- MABR; A2O process; oxygen transfer rate; simultaneous nitrification and denitrification; biofilm; microbial community
- Abstract:
- In order to study the performance of membrane aerated biofilm reactor (MABR) in municipal wastewater treatment, a full-scale demonstration plant（400 m3/d）using MABR coupled A2O (A2O-MABR) process was established in a municipal wastewater treatment plant in Nanjing. The dye test results showed that the tanks were in completely mixed condition and the continuous stirred tank reactor model was applied. The oxygen transfer and nitrification performances of MABR were stable in long-term operation, with an average oxygen transfer rate (OTR) of 9.0 g/(m2·d), and 28% of the influent ammonia nitrogen was removed by MABR. The simultaneous nitrification and denitrification was achieved in MABR tank. The microbe enrichment effect of MABR biofilm was stronger than that of activated sludge. The MABR biofilm and activated sludge had rich microbial communities, including typical species found in various wastewater treatment systems. The average relative abundance of Nitrospira in MABR biofilm reached 12%. The energy consumption of MABR system was 0.11 kW·h/m3, accounting for 19% of the total energy consumption, indicating its great potential for energy saving and carbon reduction.
Last Update:
2024-11-01