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The Optimal Composing the Filter-Bed for Coping with Daily Flow-Rate Fluctuation for the Performance of Sand Filtration Process  

Park, Dong-Hak (한국수자원공사)
Park, No-Suk (한국수자원공사)
Kim, Seong-Su (한국수자원공사)
Bae, Cheol-Ho (한국수자원공사)
Jung, Nahm-Chung (한국수자원공사)
Cjoi, Seung-II (고려대학교 환경공학과)
Publication Information
Journal of Korean Society of Water and Wastewater / v.21, no.4, 2007 , pp. 485-491 More about this Journal
Abstract
The fluctuation of inlet flow to a water treatment plant makes a serious problem that it can change the filtration rate abruptly, and ultimately occur the breakthrough of the detained particles inside filter media. Also, since it takes very short time (about 10 minutes) for the surface wave occurred from the fluctuation of inlet flow to reach the filtration process, it is impossible to control the filtration rate stably. Therefore, this study was conducted to evaluate the effect of daily flow-rate fluctuation on the performance of sand filtration process, and to suggest the dual media composition for coping with that effect. Comparative column tests have been carried out for various dual media (sand and anthracite) compositions. From the results of column tests, dual media, especially in the case of sand 45cm/anthracite 30cm, is more effective to cope with the effect of flow-rate fluctuation on the performance of filtration than single media (only sand). In addition, irrespective of dual media composition, managing ability to cope with that fluctuation tends to be weak at the end of allowable filtration duration time,
Keywords
fluctuation of inlet flow; performance of filtration; dual media; surface wave;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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