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Advanced Water Treatment of High Turbidity Source by Hybrid Process of Ceramic Microfiltration and Activated Carbon Adsorption: Effect of GAC Packing Fraction  

Park, Jin-Yong (Department of Environmental Sciences & Biotechnology, Hallym University)
Lee, Hyuk-Chan (Department of Environmental Sciences & Biotechnology, Hallym University)
Publication Information
Membrane Journal / v.18, no.3, 2008 , pp. 191-197 More about this Journal
Abstract
In this study, we used hybrid module that was composed of packing granular activated carbon (GAC) between module inside and outside of ceramic microfiltration membrane for advanced drinking water treatment. Instead of natural organic matters (NOM) and fine inorganic particles in natural water source, synthetic water was prepared with humic acid and kaolin. Packing fraction of GAC was changed from 0 to 24.05% to see effect of packing fraction. As a result, changing curves of resistance of membrane fouling ($R_f$) and permeate flux (J) during 3 h operation were almost overlapped independent of packing fraction of GAC. Treatment efficiencies of turbidity were very high above 99.46% at all packing fractions of GAC. And treatment efficiency of NOM, which was measured by $UV_{254}$ absorbance, was the highest value of 99.43% at packing fraction of 24.05%. Then, we operated the hybrid process during 13 h at packing fraction of 24.05%. As a result, J was rapidly dropped according to increase of membrane fouling within initial 1 h of operation, and almost constant after 3 h. And treatment efficiencies of turbidity and NOM were stable and high values of 99.52% and 96.63%, respectively.
Keywords
ceramic membrane; GAC; hybrid process; microfiltration; water treatment;
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Times Cited By KSCI : 7  (Citation Analysis)
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