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Application of Coagulation-UF Hybrid Membrane Process for Reuse of Secondary Effluent  

Lee, Chul-Woo (부경대학교 환경공학과)
Shon, Jung-Ki (부경대학교 토목공학과)
Shon, In-Shik (부경대학교 토목공학과)
Han, Seung-Woo (부산광역시의회 정책연구실)
Kang, Lim-Seok (부경대학교 환경공학과)
Publication Information
Journal of Korean Society of Water and Wastewater / v.19, no.5, 2005 , pp. 605-612 More about this Journal
Abstract
The objective of this study was to evaluate the factors affecting the optimization of coagulation hybrid UF membrane processes for the reuse of secondary effluent from sewage treatment plant. The experimental results obtained from the UF membrane process showed that organic colloids in the size range of $0.2{\mu}m{\sim}1.0{\mu}m$ caused the most substantial influence on the fouling of UF membrane. When using a coagulation pretreatment to UF membrane, alum dosage of 50mg/L resulted in the least reduction in membrane permeate flux. Also, for the rapid mixing process, in-line mixer type was more efficient for organic removal than back mixer type. Therefore, it may be concluded that coagulation-UF hybrid membrane process comparing to UF alone process showed not only higher removal efficiency of organic matter, but also substantial improvement of permeate flux of UF membrane.
Keywords
Secondary effluent; Reuse; UF hybrid membrane process; Coagulation; Fouling;
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