Community composition of microorganisms associated with subvisible particles and their fouling behavior in a submerged anaerobic membrane bioreactor (SAnMBR)
In this study,we investigated the microbial communities associated with sub-visible particles (0.45-10 μm) in a lab-scale submerged anaerobic membrane bioreactor (SAnMBR) and their role in membrane fouling.Results showed that regardless of membrane fluxes,the sub-visible particles in the reactor,especially the macro particles (> 5μm),were one primary membrane foulant.The dead-end filtration test used found that the sub-visible particles led to severe fouling of polyethylene membranes,and were a major contributor to the cake resistance.Most importantly,these sub-visible particles contained a large number of microorganisms,which was confirmed by live/dead cell staining analysis.According to 16S rRNA sequencing analysis,the macro particles (> 5μm) were mainly composed of the two phyla of Chloroflexi and Euryarchaeota,while the micro particles (0.45-5 μm) were dominated by Nitrospirae,Parcubacteria (OD1) and Proteobacteria phyla.All of these could play an important role in the fouling of the SAnMBR,and could facilitate in the formation of a bio-fouling layer on membranes.Overall,this type of research gave us new insights into the fouling mechanism of AnMBRs,and might contribute to better strategies to control membrane fouling.
Membrane fouling microbial community filamentous bacteria flux TMP biopolymers
Z.B.Zhou Y.Tao Y.Y.Xiao D.C.Stuckey
School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, PR China; Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, U.K. Advanced Environmental Biotechnology Centre (AEBC), Nanyang Environment and Water Research Institute Advanced Environmental Biotechnology Centre (AEBC), Nanyang Environment and Water Research Institute
国际会议
The 15th IWA World Conference on Anaerobic Digestion( 第15届IWA世界厌氧大会)
北京
英文
287-290
2017-10-17（万方平台首次上网日期，不代表论文的发表时间）