Influence of a new method of applying adsorbents on membrane fouling in MBR systems

In this study, adsorbent packed beds of granular zeolite and activated carbon (AC)  were used to mitigate membrane fouling in the membrane bioreactor (MBR) systems. Specific oxygen uptake rate (SOUR), particle size distribution (PSD), transmembrane pressure (TMP), soluble microbial products (SMP), e...

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Bibliographic Details
Published in:Water and environment journal : WEJ 2020-12, Vol.34 (S1), p.355-366
Main Authors: Mohamadi, Siavash, Hazrati, Hossein, Shayegan, Jalal
Format: Article
Language:English
Subjects:
Activated carbon
Adsorbents
Analytical methods
Bioreactors
Excitation spectra
Extracellular
Fluorescence
Fluorescence spectroscopy
Fouling
Fourier transforms
Infrared spectroscopy
membrane bioreactor
membrane fouling
Membrane processes
Membranes
Microorganisms
Oxygen consumption
Oxygen uptake
packed bed embedded adsorbent
Packed beds
Particle size distribution
petrochemical wastewater
Polysaccharides
Saccharides
Size distribution
Sludge
Spectrum analysis
Stress concentration
Uptake
zeolite
Zeolites
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Summary:In this study, adsorbent packed beds of granular zeolite and activated carbon (AC)  were used to mitigate membrane fouling in the membrane bioreactor (MBR) systems. Specific oxygen uptake rate (SOUR), particle size distribution (PSD), transmembrane pressure (TMP), soluble microbial products (SMP), extracellular polymeric substances (EPS), Fourier‐transform infrared spectroscopy (FTIR) and excitation‐emission matrix (EEM) fluorescence spectroscopy were used to identify sludge and membrane cake layer characteristics. The changes in TMP demonstrated that using AC and ZE has resulted in a 38% and a 35% reduction in membrane fouling, respectively. Measuring EPS, SMP, proteins (PN) and polysaccharides (PS) in EPS and using FTIR and EEM revealed that AC and ZE have resulted in a decrease in SMP, EPS, PN and PS. The results showed that this method could reduce membrane fouling as much as the previous methods.
ISSN:1747-6585
1747-6593
DOI:10.1111/wej.12532