Effects of Inlet Position and Baffle Configuration on Hydraulic Performance of Primary Settling Tanks
Publication: Journal of Hydraulic Engineering
Volume 134, Issue 7
Abstract
Circulation regions always exist in the settling tanks. These regions reduce the tank’s performance and decrease effective volume of the tank. Recirculation zones would also result in short-circuiting and high flow mixing problems. Inlet position would have an effect on these, too. Use of good baffle configuration may increase performance of settling tanks. One method for comparison performance of different tanks with each other is to use flow through curves (FTCs). In this note using FTCs, effects of inlet position and baffle configuration on the hydraulic performance of primary settling tanks are studied. The best position of baffle is also determined.
Get full access to this article
View all available purchase options and get full access to this article.
References
Adams, E. W., and Rodi, W. (1990). “Modeling flow and mixing in sedimentation tanks.” J. Hydraul. Eng., 116(7), 895–913.
Ashjari, M. A., and Firoozabadi, B. (2003). “Use of nonlinear in calculation of performance of settling tanks.” Proc., 11th Int. Conf. of Mechanical Engineering, 34–43.
Camp, T. R. (1946). “Sedimentation and the design of settling tanks.” ASCE Trans., Paper No. 2285, 3, 895–936.
Celik, I., and Rodi, W. (1985). “Prediction of hydrodynamic characteristics of rectangular settling tanks.” Int. Symp. on Refined Flow Modeling and Turbulence Measurements, 641–665.
Dobbins, W. E. (1944). “Effects of turbulence on sedimentation.” Trans. Am. Soc. Civ. Eng., 109(2218), 629–656.
Fluent Inc. (2001). Fluent 5.2.3 user's manual, Centerra Resource Park, Lebanon.
Imam, E., Mc Corquodale, J. A., and Bewtra, J. K. (1983). “Numerical modeling of sedimentation tanks.” J. Hydraul. Eng., 109(12), 1740–1754.
Larsen, P. (1977). “On the hydraulics of rectangular settling basins.” Rep. No. 1001, Dept. of Water Resource Engineering, Lund Institute of Technology, Lund, Sweden.
Lee, S. (1997). “Unsteady aerodynamic force prediction on a square cylinder using turbulence models.” J. Wind. Eng. Ind. Aerodyn., 67-68(1), 79–90.
Stamou, A. L., Adams, E. W., and, Rodi, W. (1990). “Numerical modeling of flow and settling in primary rectangular clarifiers.” J. Hydraul. Res., 27(5), 665–682.
Stamou, A., Katsiris, I., Georgiadis, S., Kanellopoulou, S., Tzoumerkas, F., and Xenos, D. (2001). “Improving the efficiency of existing water process tanks using flow through curves (FTCs) and mathematical models.” 7th Conf. on Environmental Science and Technology, 838–845.
Tamayol, A., and Firoozabadi, B. (2006). “Effects of turbulent models and baffle position on hydrodynamics of settling tanks.” Scientia Iranica, 13(3), 255–260.
Tamayol, A., Firoozabadi, B., and Farhanieh, B. (2005a). “Calculation of hydraulic efficiency of primary settling tanks using RNG turbulence model.” 5th Conf. of Hydraulic, 15–21 (in Persian).
Tamayol, A., Nazari, M., Firoozabadi, B., and Nabovati, A. (2005b). “Numerical modeling and study of effects of inlet position and height of inlet baffle on the performance of settling tanks. Proc., Fluid Dynamics Conf. (in Persian).
Information & Authors
Information
Published In
Copyright
© 2008 ASCE.
History
Received: Aug 11, 2005
Accepted: May 8, 2007
Published online: Jul 1, 2008
Published in print: Jul 2008
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.