LIULe,DUANAo,TIANWen-rui,et al.Performance Comparation between Microfiltration Membrane and Dynamic Membrane in Anaerobic Wastewater Treatment[J].China Water & Wastewater,2023,39(13):9-15.
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Performance Comparation between Microfiltration Membrane and Dynamic Membrane in Anaerobic Wastewater Treatment

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第39卷 Number: 第13期 Page: 9-15 Column: Date of publication: 2023-07-01
Author(s):
LIU　Le1; 2;  DUAN　Ao1; 2;  TIAN　Wen-rui3;  HU　Yi-song1; 2;  YANG　Yuan1; 2;  CHEN　Rong1; 2;  WANG　Xiao-chang1; 2
（1. Shaanxi Key Laboratory of Environmental Engineering， Xi’an University of Architecture and Technology， Xi’an 710055， China； 2. Key Laboratory of Northwest Water Resource，Environment and Ecology ， Xi’an University of Architecture and Technology， Xi’an 710055， China； 3. Shaanxi High-speed Environmental Technology Co. Ltd.， Xi’an 710018， China）
Keywords:
anaerobic dynamic membrane bioreactor;  anaerobic membrane bioreactor;  domestic wastewater;  filtration performance;  methanogenesis;  sludge characteristics
Abstract:
The lab-scale upflow AnDMBR and AnMBR were equipped with nylon mesh and microfiltration (MF) membrane to treat domestic wastewater. The filtration performance, pollutants removal, sludge and cake layer characteristics of the bioreactors were compared. The results showed that the turbidity removal of AnDMBR (94%) was lower than that of AnMBR (98%). The COD removal rates and methane production rates of the two reactors were similar, but dissolved methane accounted for about 60%-80% of the total methane production. The increase rate of trans-membrane pressure (TMP) of AnMBR (0.91-1.70 kPa/d) was much higher than that of AnDMBR (0.01-0.06 kPa/d). There was no significant difference in extracellular polymer (EPS) content between the two reactors at the end of operation. However, the EPS content in the cake layer of AnMBR was 2.3-2.7 times that of AnDMBR, so the fouling of MF membrane was more serious. The flux of the MF membrane could be effectively restored by physical and chemical cleaning, whereas the flux of the dynamic membrane could be restored only by physical cleaning.
Last Update: 2023-07-01