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Membrane Water Treatment   Volume 9, Number 1, January 2018, pages 33-42
Morphological features of thermophilic activated sludge treating food industry wastewater in MBR
Mahir Ince, Alikemal Topaloglu and Elif Ince

Abstract     [Buy Article]
    Microscopic examination of the activated sludge and morphological characterization of the flocs provides detailed information about the treatment process. The aim of this study is to investigate the morphological parameters of flocs obtained from a thermophilic jet loop membrane bioreactor (JLMBR) in different sludge retention times (SRTs), considering EPS and SMP concentration, hydrophobicity, zeta potential. The results showed that irregularity decreased with the increasing SRT. The compactness value was calculated to be less than 1 for all SRTs. However, the sludge had a more compact structure when the SRT increased. Zeta potential increased whereas hydrophobicity and floc size reduced, with increasing SRT. Furthermore, 2-D porosity calculated using the hole ratio was higher at greater SRTs. Hence, there was a significant correlation between the results obtained using the imaging technique and operation conditions of thermophilic JLMBR.
Key Words
    EPS; hydrophobicity; membrane bioreactor; morphological parameters; SMP; thermophilic
Mahir Ince: Department of Environmental Engineering, Yildiz Technical University, Istanbul, 34220, Turkey

Alikemal Topaloglu: Department of Environmental Engineering, Bulent Ecevit University, Zonguldak, 67100, Turkey

Elif Ince: Department of Environmental Engineering, Gebze Technical University, Kocaeli, 41400, Turkey

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