LONG Ze-bo,LUO Min,MA Wen-chao,et al.Application of Membrane Aerated Biofilm Reactor in Upgrading of Wastewater Treatment Plant[J].China Water & Wastewater,2020,36(17 17):1-5.
Application of Membrane Aerated Biofilm Reactor in Upgrading of Wastewater Treatment Plant
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第36卷
Number:
17 17
Page:
1-5
Column:
Date of publication:
2020-09-01
- Keywords:
- membrane aerated biofilm reactor (MABR); simultaneous nitrification and denitrification; oxygen transfer rate; nitrification rate
- Abstract:
- ZeeLungTM membrane aerated biofilm reactor (MABR) technology has been successfully applied in wastewater treatment plant (WWTP) of Yorkville-Bristol Sanitary District (YBSD) in Illinois, USA, and it has become the largest MABR WWTP in the world currently. The original aerobic activated sludge system was transformed into the A2O process system by ZeeLungTM MABR process. ZeeLungTM cassettes were installed in the retrofitted anoxic tanks to meet the increasing organic loading and new effluent total phosphorus (TP) limit(less than 1 mg/L, by biological phosphorus removal)without building new biological tanks. One-year operational data demonstrated that the effluent quality of the upgraded system could achieve the target stably, and the biological phosphorus removal and simultaneous nitrification and denitrification in ZeeLungTM tank were realized. ZeeLungTM biofilm prioritized nitrification. The average oxygen transfer rate (OTR) of ZeeLungTM was 12.0 g/(m2·d). When the average nitrification rate (NR) was 2.1 g/(m2·d), more than 80% of OTR were utilized for nitrification, indicating that stable nitrification and simultaneous total nitrogen (TN) removal were achieved under the premise of maintaining the oxygen supply capability. The semi-empirical kinetic model well predicted the NR of ZeeLungTM, and the temperature coefficient was close to 1, indicating that water temperature had little influence on NR of the ZeeLungTM.
Last Update:
2020-09-01