Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Evaluation of particulate removal in slow sand filtration processes

완속여과 공정에서 전처리 공정 도입에 따른 입자제거 효율평가

  • 김성수 (한국수자원공사 수자원연구원) ;
  • 배철호 (한국수자원공사 수자원연구원) ;
  • 박노석 (한국수자원공사 수자원연구원) ;
  • 강석형 (한국수자원공사 수자원연구원)
  • Received : 2008.01.18
  • Accepted : 2008.08.11
  • Published : 2008.08.15
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Abstract

Because of their simplicity, efficiency, and economy, slow sand filters are appropriate means of water treatment for small water systems. In this study, the effect of filtration velocity and dirty skin (Schmutzdecke) was evaluated on the performance of turbidity removal. Also, removal characteristics of particulate were investigated in the case of the usage of non-woven fabric on the surface of sand and the application of PCF as pretreatment process. Comparative column tests were carried out for the various operation condition. From the result of column tests, filtration velocity had little effect on the turbidity removal rate. The formation of algal biofilm on the surface of media is helpful in turbidity removal, while non-woven fabric is not as effective as expected. The relative contribution of biomass and accumulated particulates to head loss development in slow sand filters requires further study.

Keywords

References

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