volume 40, issue 1, P45-52 2006
DOI: 10.1016/j.watres.2005.10.035
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Mi-Ae Yun, Kyung-Min Yeon, Jong-Sang Park, Chung-Hak Lee, Jongsik Chun, Dong Joon Lim

Abstract: Two membrane bioreactors were operated at aerobic (DO=6.0mg/L) and anoxic (DO<0.3mg/L) conditions for the treatment of synthetic dye wastewater to determine the effect of dissolved oxygen on membrane filterability. The rate of membrane fouling for the anoxic MBR was five times faster than that for the aerobic MBR. Differences in the nature of the biofilm that was formed on the membrane surface as the result of different DO level was the main factor in the different fouling rates. The biofilm structure was char…

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