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DOI : 10.17640/KSWST.2015.23.1.45 ,    Vol.23, No.1, 45 ~ 55, 2015
Title
Effect of Coagulation Condition on the Membrane Fouling of Coagulation-UF Process
김수현 Su Hyun Kim , 강임석 Lim Seok Kang
Abstract
The rapid mixing process for coagulation is a critical component in a water treatment plant. Applying coagulation process before membrane filtration showed not only reducing membrane fouling, but also improving the removal of dissolved organic materials that might otherwise not be removed by the membrane alone. Also, slow mixing didn`t affect the reduction of membrane fouling, and rapid mixing using an in-line static mixer was more effective than using backmixer. In addition, only 20 percent of dissolved organic matter in raw water was the primary cause of fouling. Furthermore, the primary foulant of UF membrane was hydrophobic substance, which can easily be removed by coagulation.
Key Words
In-line static mixer, Coagulation, UF membrane, Fouling
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