Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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A Study on the Effect of the Inclined Structure on the Hydraulic Behavior Index within Sedimentation basin

경사 구조물이 침전지내 수리거동 Index에 미치는 영향

  • 임성호 (한국수자원공사 수자원연구원) ;
  • 황준식 (한국수자원공사 수자원연구원) ;
  • 박노석 (한국수자원공사 수자원연구원) ;
  • 김성수 (한국수자원공사 수자원연구원) ;
  • 임경호 (공주대학 건설환경공학부)
  • Received : 2008.08.26
  • Accepted : 2009.08.20
  • Published : 2009.10.15
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Abstract

This research has been conducted to investigate the characteristics of hydraulic behavior within the PAC contactor, the rectangular shape sedimentation basin without inclined tube and the other one with inclined tube those are parts of demonstration plants(capacity : $2,000m^3/d$) in Korea Institute of Water and Environment. As results of tracer tests, the flow within PAC contactor was evaluated to divided into plug flow and dead space distinctly, and characteristics of dead space was close to that of CSTR(Complete/continuous Stirred Tank Reactor). Also, considering Reynolds number, Froude number, Morill, Modal, NCSTR Inex and plug flow/mixed flow fraction, in the case of the rectangular shape sedimentation basin without inclined tube, the characteristics of flow pattern was close to CSTR. On the other hand, in the case of the basin with inclined tube, the region of CSTR decreased precisely compared with the case of no-tube. Until now we have recognized that the inclined hydraulic structure just reduces the surface loading rate within a sedimentation basin. Actually besides, the inclined structure have an important effect on the hydraulic behavior within the basin.

Keywords

References

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