Journal
BIORESOURCE TECHNOLOGY
Volume 210, Issue -, Pages 2-10Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2016.01.013
Keywords
Dissolved organic matter; Foulant characteristics; Membrane bioreactor; Novel microbial consortium; Wastewater treatment
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The performance of a submerged membrane bioreactor (MBR) with and without a novel microbial consortium (NMBR vs. CMBR) was compared to provide deeper insights into the effects of changes in water quality and dissolved organic matter (DOM) characteristics by a novel microbial consortium on the fouling characteristics of MBR processes. Despite similar operating conditions and identical DOM properties in the feed waters, NMBR exhibited a lower propensity to release polysaccharide-like compounds with low molecular weight by bacterial activities compared to CMBR. These compounds have a great fouling potential for MBR processes. Therefore, an increase in the transmembrane pressure (TMP) of NMBR (normalized TMP (TMP/TMP0): 1.14) was much slower and less significant than that observed in CMBR (TMP/TMP0: 2.61). These observations imply that the novel microbial consortium can efficiently mitigate membrane fouling by hydrophilic DOM in MBR processes. (C) 2016 Elsevier Ltd. All rights reserved.
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