|
Title:
|
Microbial behaviors involved in cake fouling in membrane bioreactors under different solids retention times.
|
|
Author:
|
Wu, Bing.; Yi, Shan.; Fane, Anthony G.
|
|
Copyright year:
|
2010 |
|
Abstract:
|
Biomass characteristics and membrane performances in the MBRs operated at a high flux of 30 L/m2 h
under different SRTs (10, 30 days, 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. |
|
Subject:
|
DRNTU::Engineering::Environmental engineering::Water treatment. |
|
Type:
|
Journal Article |
|
Series/ Journal Title:
|
Bioresource technology |
|
Research Centre:
|
Singapore Membrane Technology Centre |
|
Rights:
|
© 2011 Elsevier. This is the author created version of a work that has been peer reviewed and accepted for publication by Bioresource technology, Elsevier. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI: http://dx.doi.org/10.1016/j.biortech.2010.11.045 ] |
|
Version:
|
Accepted version |
