인라인 주입방식의 최초응집이 케이크 저항에 미치는 영향 Effect of cake resistance by first-aggregation of in-line injection system

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Cake resistance is influenced by floc size deposited on membrane surface. Enlarging floc size can reduce cake resistance. The small particles are enlarged by coagulation and flocculation process in conventional mixing tank at membrane filtration system. Fully-grown flocs for reducing the cake resistance, however, are ruptured while passing through a pump. In light of this fact, this study aims to experimentally look at the reaggregation phenomenon of mixing system. In addition, reaggregation phenomenon of mixing system is compared with first-aggregation of in-line injection system in which coagulant is injected just before a pump. These results suggest that first-aggregation of in-line injection system is better than reaggregation of mixing system for G-value above 3100sec-1. Since G-value in pipe of actual membrane filtration system are usually larger than 3100sec-1. The performance of in-line injection system is expected to be better than the conventional mixing tank system.
Publisher
대한상하수도학회
Issue Date
2008-06
Language
Korean
Citation

상하수도학회지, v.22, no.3, pp.281 - 288

ISSN
1225-7672
URI
http://hdl.handle.net/10203/86646
Appears in Collection
CE-Journal Papers(저널논문)
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