이석헌 안규홍 최양훈 권지향 2024-01-21T06:02:08Z 2024-01-21T06:02:08Z 2021-09-06 2004-12 1225-7672 https://pubs.kist.re.kr/handle/201004/136979 Coagulation has been investigated for pretreatment of low-pressure membrane systems such as microfiltration and ultrafiltration. Coagulation pretreatment can reduce foulants (particles and organic matter) prior to membrane filtration. However, when in-line coagulation or submerged type of filtration is used, flocculent aggregates could act as a foulant depending on concentrations and specific properties of floc. A natural water and three synthetic waters were used to investigate effects of coagulation pretreatment and presence of flocculent aggregates on membrane fouling. Coagulation pretreatment shows that foulants were effectively removed during coagulation and the formed cake layer on the membrane surface had less resistances compared to raw natural water. In addition, little difference in membrane fouling was found by flocculent aggregates from the natural water. Interestingly, however, the results by three synthetic waters indicated that flocculent aggregates could have adverse effects on membrane fouling in a specific condition. 대한상하수도학회 전처리로 응집공정을 이용한 정밀여과 공정에서 응집 플록 특성에 따른 막오염 연구 Effects of Characteristics of Flocculent Aggregates on Membrane Fouling in Microfiltration with Coagulation Pretreatment Article 2 상하수도학회지, v.18, no.6, pp.785 - 793 상하수도학회지 18 6 785 793 kci ART000938462 정밀여과 전처리 응집공정 응집플록 막오염Microfiltration pretreatment coagulation coagulant floc membrane fouling 정밀여과 전처리 응집공정 응집플록 막오염Microfiltration pretreatment coagulation coagulant floc membrane fouling