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Advanced water treatment in pilot scale BAC-sand filter  

이윤진 (건국대학교 환경공학과)
문철훈 (㈜ 해동정수)
김재우 (경원전문대학 환경공업과)
남상호 (건국대학교 환경공학과)
Publication Information
Journal of environmental and Sanitary engineering / v.17, no.4, 2002 , pp. 47-52 More about this Journal
Abstract
This study was carried out to examine the characteristics of dual media filter with BAC and sand on a pilot scale which was installed in T Water Treatment Plant of Seoul. The conclusions drawn from experimental results are as follows : For the BAC-Sand filter, the preceded gravity sand filter did not largely affect the removal of organics and turbidity causing matters, tut the frequency of backwashing was explicitly reduced to two times with the stable growth of microorganisms. The biomass on media in case of existence of preceded sand filter was 1.4 times higher than that of nonexistence. In case of backwashing with water, the time needed to comply with below 10NTU took 22, 10, and 5 minutes respectively with the expansion ration of 1.2, 1.5 and 1.8. The higher the expansion ration was, the shorter the backwashing time was.
Keywords
BAC-Sand Filter; Backwashing; Dual Media; Biomass;
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