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http://dx.doi.org/10.4491/KSEE.2011.33.5.332

Effect of Fluidized Bed Powdered Activated Carbon Impregnated by Iron Oxide Nano-particles on Enhanced Operation and NOM Removal of MF Membrane System  

Kim, Sung-Su (Department of Environmental Engineering, Changwon National University)
Seo, Gyu-Tae (Department of Environmental Engineering, Changwon National University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.33, no.5, 2011 , pp. 332-339 More about this Journal
Abstract
Effects of powdered activated carbon impregnated by iron oxide nano particle (Impregnated PAC) on the microfiltration (MF) membrane system performance in NOM removal from water were investigated in this study. A fluidized bed column was employed as a pretreatment of MF membrane process. The Impregnated PAC bed was stably maintained at an upflow rate of 63 m/d without leakage of the Impregnated PAC particles, which provided a contact time of 29 minutes. A magnetic ring at the upper part of the column could effectively hold the overflowing discrete particles. The Impregnated PAC column demonstrated a significant enhancement in the MF membrane performance in terms of fouling prevention and natural organic matter (NOM) removal. Trans-membrane pressure of the MF membrane increased to 41 kPa in 98 hours of operation, while it could be maintained at 12 kPa with the Impregnated PAC pretreatment. Removal of NOM determined by dissolved organic carbon and UV254 was also enhanced from 46% and 51% to 75% and 84%, respectively, by the pretreatment. It was found that the Impregnated PAC effectively removed a wide range of different molecular-sized organic compounds from size exclusion analysis.
Keywords
Iron Oxide; MF Membrane; Nano Particle; NOM; Powder Activated Carbon;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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