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Evaluation of Hydrodynamic Behavior in Horizontal Settling Basin with Archimedes number  

Park, No-Suk (한국수자원공사 수자원연구원)
Lee, Sanguk (한국수자원공사 수자원연구원)
Publication Information
Journal of Korean Society of Water and Wastewater / v.23, no.6, 2009 , pp. 865-870 More about this Journal
Abstract
In this study, the adequacy of Reynolds numbers and Froude numbers derived from about sixty domestic water treatment plants (WTPs) were analyzed in order to estimate the characteristics of hydraulic behavior within the rectangular shaped sedimentation basins used widely. From the results of analysis, most of domestic WTPs have satisfied the criteria regulated as that Reynolds number should less than 1,000(dimensionless). On the other hand, they have not been able to satisfy the Froude number criteria, which should be higher than $1.0{\times}10^{-6}$. The reasons why most of domestic WTPs could not satisfy the criteria are that its criteria basis has been not only inadequate, but also the concept of external flow occurred around a settling particle has been ignored. Accordingly, this study proved the feasibility of Archimedes number, which indicates the ratio between particle Reynolds number and Froude number, to evaluate the hydraulic efficiency and its function of scale factor.
Keywords
Archimedes Number; Reynolds Number; Froude Number; Rectangular sedimentation basin;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 환경부 (2004) 상수도시설기준
2 김정현, 배철호, 박노석, 문용택, 이선주, 권순범, 안효원 (2005) 정수장 최적화를 위한 성능제한인자 평가에 관한 연구, 상하수도 학회지. Vol.19, No.1, pp.78-91
3 Vittal, N. and Raghav, M. S. (1997) Design of Single-Chamber Settling Basins, ASCE, Journal of Environmental Engineering, Vol. 123, No. 10, pp.469-471   DOI   ScienceOn
4 Jayanti, S. and Narayanan, S. (2004) Computational Study of Particle-Eddy Interaction in Sedimentation Tanks, ASCE, Journal of Environmental Engineering, Vol. 130, pp.37-49   DOI   ScienceOn
5 Chao, J. L and Trussel, R. R. (1980) Hydraulic Design of Flow Distribution Channels, Journal of Environmental Engineering, ASCE, Vol. 106, pp.321-333
6 Prabhata K. Swamee and Aditya Tyagi (1996) Design of Class-I Sedimention Tanks, ASCE, Journal of Environmental Engineering, Vol. 122, No1, pp.71-73   DOI
7 Kawamura, S. (1991), Integrated Design of Water Treatment Facilities, John Wiley & Sons, Inc