Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Evaluation of the mixing and Hydrodynamic Behavior in rapid mixing stage on using Computational Fluid Dynamics

전산유체역학를 이용한 급속혼화공정 교반효과 및 유동 평가

  • 조영만 (부산광역시 상수도사업본부 수질연구소) ;
  • 유수전 (부산광역시 상수도사업본부 수질연구소) ;
  • 유평종 (부산광역시 상수도사업본부 수질연구소) ;
  • 김대영 (명장정수사업소) ;
  • 황보봉형 (명장정수사업소)
  • Received : 2009.08.06
  • Accepted : 2009.12.10
  • Published : 2009.12.15
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Abstract

With time, the stable management of turbidity is becoming more important in the water treatment process. So optimization of coagulation is important for the improvement of the sedimentation efficiency. we evaluated the mixing and hydrodynamic behavior in the coagulation basin using Computational Fluid Dynamics (CFD). The items for evaluation are a location and the speed of agitator and angle of an injection pipe. The results of the CFD simulation, the efficacy of mixing in the coagulation basin was not affected according to one or two injection pipe and angle of an injection pipe. If there is a agitator near outlet of coagulation basin, the efficacy of mixing don't improve even though the speed of agitator increase. So location of agitator is perfect when it locate center at the inlet stream. The coagulation basin at this study, the proper speed of agitator is form 20rpm to 30rpm.

Keywords

References

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