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Characterization of membrane foulants in a full-scale membrane bioreactor for supermarket wastewater treatment

Paper ID Volume ID Publish Year Pages File Format Full-Text
34889 45056 2011 9 PDF Available
Title
Characterization of membrane foulants in a full-scale membrane bioreactor for supermarket wastewater treatment
Abstract

Membrane foulants including external foulants and internal foulants were systematically characterized in a full-scale membrane bioreactor (MBR) for supermarket wastewater treatment in this study. Three-dimensional excitation emission matrix (EEM) fluorescence spectroscopy, gel filtration chromatography (GFC), Fourier transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM) and energy-diffusive X-ray (EDX) analyzer were used to characterize the membrane foulants. The results indicated that the organic substances with fluorescence characteristics in both external and internal foulants were identified as protein-like substances and soluble microbial by-product-like materials by EEM technology. The GFC analysis exhibited that the external foulants had much broader distributions of molecular weight (MW) than the effluent and the internal foulants. Analyses of MW distributions suggest that the external and internal foulants were formed due to distinct fouling mechanisms. Besides proteins and polysaccharides, the oil substances were identified on the fouled membranes by the FT-IR analysis. SEM and EDX analyses indicated that the foulants covering the membrane surfaces comprised not only organic substances but also inorganic elements including Mg, Ca, Na, Al, K, and Si.

Keywords
Membrane bioreactor; Membrane foulants; Membrane fouling; Supermarket oily wastewater
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Characterization of membrane foulants in a full-scale membrane bioreactor for supermarket wastewater treatment
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 46, Issue 4, April 2011, Pages 1001–1009
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us