Analysis of membrane fouling and microbial community structure in an MBR+worm reactor

被引：0

作者：

Liu J. ^{[1
,2
]}

Zuo W. ^{[2
]}

Zhang J. ^{[2
]}

Li H. ^{[2
]}

Li L. ^{[2
]}

Tian Y. ^{[1
,2
]}

机构：

[1] State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin

[2] School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin

来源：

Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology | 2017年 / 49卷 / 02期

关键词：

EPS; MBR; Membrane fouling; Microbial community structure; SMP;

D O I：

10.11918/j.issn.0367-6234.2017.02.006

中图分类号：

学科分类号：

摘要：

To study the effects of worm predation on membrane fouling in an MBR+worm reactor, an MBR+worm reactor with worm (R1) and an MBR+worm reactor without worm (R2) were operated in parallel. Variation of transmembrane pressure (p™) and microbial metabolites were studied in the MBR (S-MBR) of the R1 and the MBR (C-MBR) of the R2.Denatured gradient gel electrophoresis (DGGE) was used for analyzing the composition and distribution of microbial community in the S-MBR and the C-MBR. The results showed that the membrane fouling cycles of the S-MBR and the C-MBR were 90 d and 28-37 d, respectively. Worm predation decreased the polysaccharide and proteins in the soluble microbial products (SMP) and extracellular polymeric substances (EPS) of the S-MBR. Alphaproteobacterium, Betaproteobacterium, Deltaproteobacterium, Geobacter on the membrane wire surface of the S-MBR and Azorhizobium, Rhodobacter, Gammaproteobacterium, Flavobacteria on the membrane wire surface of the C-MBR played an important role in the membrane fouling. Caldilinea was suggested to be related to the membrane fouling alleviation of the S-MBR. Worm predation changed the microbial community structure of the S-MBR, resulting in membrane fouling alleviation. © 2017, Editorial Board of Journal of Harbin Institute of Technology. All right reserved.

引用

页码：32 / 36

页数：4

共 17 条

[1] Hendrickx T.L.G., Elissen H.J.H., Temmink H., Et al., Operation of an aquatic worm reactor suitable for sludge reduction at large scale, Water Research, 45, 16, pp. 4923-4929, (2011)
[2] Tamis J., Schouwenburg Van G., Kleerebezem R., Et al., A full scale worm reactor for efficient sludge reduction by predation in a wastewater treatment plant, Water Research, 45, 18, pp. 5916-5924, (2011)
[3] Tian Y., Lu Y.B., Li Z.P., Performance analysis of a combined system of membrane bioreactor and worm reactor: Wastewater treatment, sludge reduction and membrane fouling, Bioresource Technology, 121, pp. 176-182, (2012)
[4] Gao D., Xin X., Analysis of microbial community structure and metabolites during the MBR membrane fouling process, Journal of Harbin Institute of Technology, 46, 2, pp. 26-32, (2014)
[5] Zhang B., Sun B., Liu H., Et al., Comparison of microbial community structure in MBRs treating different wastewater, Environmental Science, 29, 10, pp. 2944-2949, (2008)
[6] Lim S.Y., Kim S., Yeon K.M., Et al., Correlation between microbial community structure and biofouling in a laboratory scale membrane bioreactor with synthetic wastewater, Desalination, 287, pp. 209-215, (2012)
[7] Gao W.J., Lin H.J., Leung K.T., Et al., Structure of cake layer in a submerged anaerobic membrane bioreactor, Journal of Membrane Science, 374, 1, pp. 110-120, (2011)
[8] Huang L.N., Wever H.D., Diels L., Diverse and distinct bacterial communities induced biofilm fouling in membrane bioreactors operated under different conditions, Environmental Science & Technology, 42, 22, pp. 8360-8366, (2008)
[9] Lu Y., Research on a combined system of membrane bioreactor and worm reactor for sludge reduction and membrane fouling mitigation, (2014)
[10] Gao Q., Application of polymerase chain reaction (PCR) technology in environmental monitoring, Journal of Anhui Agri Sci, 42, 36, pp. 12825-12828, (2014)

← 1 2 →