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http://dx.doi.org/10.14579/MEMBRANE_JOURNAL.2013.23.6.460

Effect of Coagulated Flocs Broken by the Pressure Pump on Removal Rate and Membrane Fouling of Pressurized MF process  

Kim, Junhyun (Water Quality Research Center, Waterworks Headquarters, Incheon Metropolitan City)
Moon, Baeksu (Water Quality Research Center, Waterworks Headquarters, Incheon Metropolitan City)
Park, Jongsu (Water Quality Research Center, Waterworks Headquarters, Incheon Metropolitan City)
Cho, Yoonho (ECONITY Co., Ltd.)
Kim, Jinho (ECONITY Co., Ltd.)
Publication Information
Membrane Journal / v.23, no.6, 2013 , pp. 460-468 More about this Journal
Abstract
This study reviewed optimum dosage rate of coagulant and ability to remove dissolved organic carbon without sedimentation in conventional water purification plant. It was confirmed that floc formated by pre-treatment process was broken by impeller of booster pump. Optimum dosage rate of coagulant was 4 mg/L (as PACl 17%) for floc formation through blend, coagulation and after passing through the pump when turbidity of raw water was less than 10 NTU. And average removal rate of dissolved organic carbon was 43% at that time. Maximum removal rate of dissolved organic carbon was 48%, even though coagulation rate was increased gradually until 8 mg/L (as PACl 17%). So removal rate of dissolved organic carbon is not much improved even if dosage rage of coagulant increase. TMP of PVDF (polyvinylidene flouride) pressurized MF process without pre-treatment operated at 0.54 bar and TMP of PVDF pressurized MF process with pre-treatment operated at 0.41 bar.
Keywords
PVDF pressurized membrane; coagulation; flocculation; NOM (Natural organic matter);
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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