Title: Comparison of MBR performance and membrane cleaning in a single-stage activated sludge system and a two-stage anaerobic/aerobic (A/A) system for treating synthetic molasses wastewater
Authors: Yan, Xinxin ×
Bilad, Muhammad Roil
Gerards, Ron
Vriens, Luc
Piasecka, Anna
Vankelecom, Ivo #
Issue Date: Mar-2012
Publisher: Elsevier Scientific Pub. Co.
Series Title: Journal of Membrane Science vol:394 pages:49-56
Abstract: Two pilot systems were set-up: a two-stage system consisting of an up-flow anaerobic sludge blanket (UASB) reactor followed in series by a membrane bioreactor (MBRUASB), and a single aerobic MBR system (MBRaer). Apart from a comparable chemical oxygen demand (COD), the influents of both MBRs were different as the MBRUASB was fed by UASB treated molasses wastewater while the MBRaer was directly fed by a more diluted synthetic molasses wastewater. This influenced microbial growth, soluble microbial products (SMP) and bound extracellular polymeric substances (EPS) in the MBRs, different MBR performances (membrane filtration and fouling behavior), and membrane cleaning results were found between the two MBRs. Scanning electron microscopy (SEM) analysis, energy-dispersive X-ray (EDX) analysis and the different cleaning results indicated that the membrane fouling layer in the MBRUASB contained more inorganic components than that in the MBRaer. This, together with the high level of SMP and the smaller particle size in the sludge resulted in a much higher fouling rate in the MBRUASB than in the MBRaer under sub-critical flux operation. (C) 2011 Elsevier B.V. All rights reserved.
ISSN: 0376-7388
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Centre for Surface Chemistry and Catalysis
× corresponding author
# (joint) last author

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