Shifts in microbial community structure and diversity in a MBR combined with worm reactors treating synthetic wastewater

查看全文 作　　者：Jia [1]Liu;Wei [1]Zuo;Jun [1]Zhang;Hui [1]Li;Lipin [1]Li;Yu [1]Tian

机构地区：[1]State Key Laboratory of Urban Water Resource and Environment(SKLUWRE),School of Municipal and Environmental Engineering,Harbin Institute of Technology

出　　处：《Journal of Environmental Sciences》索引2017年第29卷第4期,共10页

基　　金：supported by the Major Science and Technology Program for Water Pollution Control and Management(No.2013ZX07201007);the State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology(No.2014DX03);the Science Fund for Distinguished Young Scholars of Heilongjiang Province(No.JC201303) 摘　　要：The chemical oxygen demand(COD) and NH_3-N removal, membrane fouling, sludge characteristics and microbial community structure in a membrane bioreactor(MBR) coupled with worm reactors(SSBWR) were evaluated for 210 days. The obtained results were compared to those from a conventional MBR(C-MBR) operated in parallel. The results indicated that the combined MBR(S-MBR) achieved higher COD and NH_3-N removal efficiency,slower increase in membrane fouling, better sludge settleability and higher activities of the related enzymes in the activated sludge. Denaturing gradient gel electrophoresis was used to analyze the microbial community structures in the C-MBR and the S-MBR. The microbial community structure in the S-MBR was more diverse than that in the C-MBR. Additionally, the slow-growing microbes such as Saprospiraceae, Actinomyces, Frankia, Clostridium, Comamonas,Pseudomonas, Dechloromonas and Flavobacterium were enriched in the S-MBR, further accounting for the sludge reduction, membrane fouling alleviation and wastewater treatment. 关键词：复合膜生物反应器微生物群落结构 MBR 合成废水多样性蚯蚓污泥沉降性能梭状芽孢杆菌

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Shifts in microbial community structure and diversity in a MBR combined with worm reactors treating synthetic wastewater

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