상하수도학회지 (Journal of Korean Society of Water and Wastewater)

  • 제21권4호
  • /
  • Pages.485-491
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  • 2007
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  • 1225-7672(pISSN)
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  • 2287-822X(eISSN)
대한상하수도학회 (The Korean Society of Water and Wastewater)
권호 표지

일유량 변동에 따른 여과수질 악화에 대처하기 위한 최적 여재구성에 관한 연구

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

  • 투고 : 2007.06.21
  • 심사 : 2007.08.13
  • 발행 : 2007.08.15
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초록

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,

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참고문헌

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