Microbial behaviors involved in cake fouling in membrane bioreactors under different solids retention times

Bing Wu; Shan Yi; Anthony G. Fane

doi:10.1016/j.biortech.2010.11.045

Microbial behaviors involved in cake fouling in membrane bioreactors under different solids retention times

Bing Wu
, Shan Yi
, Anthony G. Fane

Faculty of Civil and Environmental Engineering

University of Iceland

Research output: Contribution to journal › Article › peer-review

Abstract

Biomass characteristics and membrane performances in the MBRs operated at a high flux of 30L/m² h under different SRTs (10, 30days, and infinity) were monitored. Results showed that more serious cake-fouling happened in the SRT-infinity MBR, which correlated with the activated sludge characteristics such as smaller floc size and greater EPS amount. DGGE analysis indicated that the microbial community shifted in different ways under various SRTs, which also influenced EPS productions in the MBRs. Different microbial communities were developed on the membrane surfaces at various operating stages and SRTs. Possibly, the activated sludge characteristics (such as MLSS concentration, EPS properties) and hydrodynamic conditions influenced by the SRTs were associated with cake layer development and membrane fouling propensity. Insight into the EPS characteristics and deposition behaviors of bacterial flocs will be crucial to explore appropriate biofouling control strategies in MBRs.

Original language	English
Pages (from-to)	2511-2516
Number of pages	6
Journal	Bioresource Technology
Volume	102
Issue number	3
DOIs	https://doi.org/10.1016/j.biortech.2010.11.045
Publication status	Published - Feb 2011

Other keywords

Extracellular polymeric substances
Flux
Membrane fouling
PCR-DGGE
Shear force

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10.1016/j.biortech.2010.11.045

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@article{1c8115ef4c6942129b1c23fc93dedc85,

title = "Microbial behaviors involved in cake fouling in membrane bioreactors under different solids retention times",

abstract = "Biomass characteristics and membrane performances in the MBRs operated at a high flux of 30L/m2 h under different SRTs (10, 30days, and infinity) were monitored. Results showed that more serious cake-fouling happened in the SRT-infinity MBR, which correlated with the activated sludge characteristics such as smaller floc size and greater EPS amount. DGGE analysis indicated that the microbial community shifted in different ways under various SRTs, which also influenced EPS productions in the MBRs. Different microbial communities were developed on the membrane surfaces at various operating stages and SRTs. Possibly, the activated sludge characteristics (such as MLSS concentration, EPS properties) and hydrodynamic conditions influenced by the SRTs were associated with cake layer development and membrane fouling propensity. Insight into the EPS characteristics and deposition behaviors of bacterial flocs will be crucial to explore appropriate biofouling control strategies in MBRs.",

keywords = "Extracellular polymeric substances, Flux, Membrane fouling, PCR-DGGE, Shear force",

author = "Bing Wu and Shan Yi and Fane, \{Anthony G.\}",

note = "Funding Information: The authors wish to thank the Agency for Science, Technology and Research (A∗STAR) of Singapore, for funding this project as part of the Temasek Professor (Professor Anthony G. Fane) Programme in Membrane Technology for Sustainable Water. The Environment and Water Industry Development Council is also acknowledged for funding Singapore Membrane Technology Center, which supports to complete this work.",

year = "2011",

month = feb,

doi = "10.1016/j.biortech.2010.11.045",

language = "English",

volume = "102",

pages = "2511--2516",

journal = "Bioresource Technology",

issn = "0960-8524",

publisher = "Elsevier Ltd.",

number = "3",

}

TY - JOUR

T1 - Microbial behaviors involved in cake fouling in membrane bioreactors under different solids retention times

AU - Wu, Bing

AU - Yi, Shan

AU - Fane, Anthony G.

N1 - Funding Information: The authors wish to thank the Agency for Science, Technology and Research (A∗STAR) of Singapore, for funding this project as part of the Temasek Professor (Professor Anthony G. Fane) Programme in Membrane Technology for Sustainable Water. The Environment and Water Industry Development Council is also acknowledged for funding Singapore Membrane Technology Center, which supports to complete this work.

PY - 2011/2

Y1 - 2011/2

N2 - Biomass characteristics and membrane performances in the MBRs operated at a high flux of 30L/m2 h under different SRTs (10, 30days, and infinity) were monitored. Results showed that more serious cake-fouling happened in the SRT-infinity MBR, which correlated with the activated sludge characteristics such as smaller floc size and greater EPS amount. DGGE analysis indicated that the microbial community shifted in different ways under various SRTs, which also influenced EPS productions in the MBRs. Different microbial communities were developed on the membrane surfaces at various operating stages and SRTs. Possibly, the activated sludge characteristics (such as MLSS concentration, EPS properties) and hydrodynamic conditions influenced by the SRTs were associated with cake layer development and membrane fouling propensity. Insight into the EPS characteristics and deposition behaviors of bacterial flocs will be crucial to explore appropriate biofouling control strategies in MBRs.

AB - Biomass characteristics and membrane performances in the MBRs operated at a high flux of 30L/m2 h under different SRTs (10, 30days, and infinity) were monitored. Results showed that more serious cake-fouling happened in the SRT-infinity MBR, which correlated with the activated sludge characteristics such as smaller floc size and greater EPS amount. DGGE analysis indicated that the microbial community shifted in different ways under various SRTs, which also influenced EPS productions in the MBRs. Different microbial communities were developed on the membrane surfaces at various operating stages and SRTs. Possibly, the activated sludge characteristics (such as MLSS concentration, EPS properties) and hydrodynamic conditions influenced by the SRTs were associated with cake layer development and membrane fouling propensity. Insight into the EPS characteristics and deposition behaviors of bacterial flocs will be crucial to explore appropriate biofouling control strategies in MBRs.

KW - Extracellular polymeric substances

KW - Flux

KW - Membrane fouling

KW - PCR-DGGE

KW - Shear force

UR - https://www.scopus.com/pages/publications/78650845694

U2 - 10.1016/j.biortech.2010.11.045

DO - 10.1016/j.biortech.2010.11.045

M3 - Article

C2 - 21123061

SN - 0960-8524

VL - 102

SP - 2511

EP - 2516

JO - Bioresource Technology

JF - Bioresource Technology

IS - 3

ER -

Microbial behaviors involved in cake fouling in membrane bioreactors under different solids retention times

Abstract

Other keywords

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