HR: 0800h
AN: H11C-0686    [Abstracts]
TI: Numerical Simulation of Water Distribution in Plenum Within the Inclined Plate Settler
AU: * Abrishamchi, A
EM: abrisham@ucdavis.edu
AF: Department of Civil and Environmental Engineering, University of California at Davis, One Shields Ave., Eng. III, Davis, CA 95616, United States
AU: Kayhanian, M
EM: mdkayhanian@ucdavis.edu
AF: Department of Civil and Environmental Engineering, University of California at Davis, One Shields Ave., Eng. III, Davis, CA 95616, United States
AB: Inclined plate settlers are generally considered as a substitute for conventional sedimentation or clarifiers used in municipal water and wastewater treatment plants. The inclined plate settlers are generally considered for water and wastewater treatment when an upgrade is needed or when there exists a high overflow rate and less available land area. The principal feature of inclined plate settlers compared with conventional sedimentation is increasing the particle settling velocities with self cleaning capabilities and reducing the overall settling tank surface area. Inclined plates are usually arranged at an angle where the settled solid particles will slide by gravity and be deposited in the solid collection zone. The plates are found to perform best when they are arranged at 55 degree angle. One major problem associated with inclined plates is equal distribution of water flow in plenum. To address this problem, we used a typical inclined plate sedimentation tank design and performed three-dimensional numerical flow simulations by focusing on the plenum area by utilizing computational-fluid-dynamics (CFD) programming. Through these simulations we will show that an unequal water distribution in plenum will highly affect the particle settling efficiency in the inclined plate settler system. Additional simulations will be performed under varying flow patterns until an equal water distribution in plenum is accomplished and hence an optimum tank design will be identified.
DE: 1847 Modeling
DE: 1860 Streamflow
DE: 1861 Sedimentation (4863)
DE: 1862 Sediment transport (4558)
SC: Hydrology [H]
MN: 2007 Fall Meeting