상하수도학회지 (Journal of Korean Society of Water and Wastewater)

  • 제20권1호
  • /
  • Pages.147-155
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  • 2006
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  • 1225-7672(pISSN)
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  • 2287-822X(eISSN)
대한상하수도학회 (The Korean Society of Water and Wastewater)
권호 표지

슬러지계면층 높이변화모델에서 슬러지 침전특성에 대한 영향

The Effect of Sludge Settling Characteristics on Sludge-Water Interface Height Change Model

  • 박석균 (광운대학교 환경공학과) ;
  • 강선홍 (광운대학교 환경공학과)
  • 투고 : 2006.01.11
  • 심사 : 2006.02.08
  • 발행 : 2006.02.15
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초록

For the further study of the solids flux theory, several researchers have proposed models to predict sludge settling velocity for each different concentration by using sludge indexes, SVI, SSVI and $SSVI_{3.5}$. It is difficult to apply the above models to predict sludge-water interface height in a batch column because sludge settling velocity changes while sludge settle down. While sludge settle down in a batch column, sludge concentration becomes high. The sludge concentration change is one of the most critical causes of the change of sludge settling velocity. Also, sludge concentration change causes of sludge index to change. SVI is more sensitive than SSVI or $SSVI_{3.5}$ to the change of sludge concentration. Each sludge has physical characteristics of its own which makes the settling velocity for each sludge different. The purpose of this study is to establish the correction factors that are able to compensate the errors derived from each different sludge settling characteristic by using sludge indexes, therefore the correction factors are applicable to the model for the change of sludge-water interface height.

키워드

참고문헌

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