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ISSN : 1226-0088(Print)
ISSN : 2288-7253(Online)
Membrane Journal Vol.23 No.6 pp.460-468
DOI : https://doi.org/10.14579/MEMBRANE_JOURNAL.2013.23.6.460

가압펌프에 의해 해체된 플럭이 가압식 막여과 공정의 제거효율 및 막오염에 미치는 영향

김 준 현, 문 백 수, 박 종 수, 조 윤 호*,†, 김 진 호*
인천광역시 상수도사업본부 수질연구소, *(주)에코니티

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

Yoonho Cho*,†, Junhyun Kim, Baeksu Moon, Jongsu Park, Jinho Kim*
*ECONITY Co., Ltd.
Water Quality Research Center, Waterworks Headquarters, Incheon Metropolitan City
(Received December 16, 2013, Revised December 23, 2013, Accepted December 24, 2013)

Abstract

This study reviewed optimum dosage rate of coagulant and ability to remove dissolved organic carbon withoutsedimentation in conventional water purification plant. It was confirmed that floc formated by pre-treatment process was brokenby impeller of booster pump. Optimum dosage rate of coagulant was 4 mg/L (as PACl 17%) for floc formation throughblend, coagulation and after passing through the pump when turbidity of raw water was less than 10 NTU. And average removalrate 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 organiccarbon is not much improved even if dosage rage of coagulant increase. TMP of PVDF (polyvinylidene flouride) pressurizedMF process without pre-treatment operated at 0.54 bar and TMP of PVDF pressurized MF process with pre-treatment operatedat 0.41 bar.

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