상하수도학회지 (Journal of Korean Society of Water and Wastewater)

  • 제20권3호
  • /
  • Pages.451-460
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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

슬러지침전속도를 고려한 새로운 슬러지침전특성지표의 설정에 관한 연구

New Sludge Settling Characteristic Index Considering Sludge Settling Velocity

  • 박석균 (광운대학교 환경공학과) ;
  • 강선홍 (광운대학교 환경공학과) ;
  • 김동하 (국민대학교 건설시스템공학부)
  • 투고 : 2006.04.25
  • 심사 : 2006.06.08
  • 발행 : 2006.06.15
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초록

While sludge settles down in a batch column, sludge concentration becomes high. Sludge concentration change is one of the most critical causes of the sludge settling velocity variation. Therefore, sludge concentration change causes sludge index to change. SVI is more sensitive than other sludge indexes to the change of sludge concentration. And if sludge-water interface has reached final height within 30minutes, SVI is not suitable for prediction of sludge settling characteristic, Therefore, SVIs of each sludge are, in some cases, different although each sludge has the same settling velocity. But SVI has been widely used to interpret sludge settling characteristic by a simple testing method. This work has two purposes. The first purpose is to predict sludge settling velocity by using sludge-water interface settling velocity. And the second purpose is to develop new sludge settling characteristic index to exactly interpret sludge settling characteristic by overcoming the limit of SVI.

키워드

참고문헌

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