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Evaluation of the Effect of Flocculator Rotation Direction in Floccualation Basin on Hydrodynamic Behavior using CFD  

Cho, Young-Man (Water Quality Research of Busan Water Authority)
Yoo, Soo-Jeon (Water Quality Research of Busan Water Authority)
Roh, Jae-Soon (Water Quality Research of Busan Water Authority)
Kim, taek-Jun (Busan Metropolitan City)
Kim, Chang-Won (Department of Environment Engineering, Pusan National University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.31, no.5, 2009 , pp. 364-370 More about this Journal
Abstract
With time, the stable management of turbidity is becoming more important in the water treatment process. So optimization of flocculation is important for the improvement of the sedimentation efficiency. we evaluated the hydrodynamic behavior in the rotation direction (clock-wise, counterclock-wise) of the flocculator in the flocculation basin using Computational Fluid Dynamics (CFD). The results of the CFD simulation, in cases where flocculators rotate in a clockwise direction, a stronger flow is formed near the surface of the water where the rotating direction and current of flow correspond. The variance and standard deviation of the flux are about 8.5 and 2.9 respectively. In contrast, in the case of a counterclockwise direction, a stronger flow is formed near the bottom of the basin. The variance and standard deviation of the flux are about 5.3 and 2.3, respectively. The effluent flux is affected more by the third flocculator spin than the first and second flocculator spins. The third flocculator spinning in the counterclockwise direction is better for the uniform flow of the sedimentation basin than the third flocculator spinning in the clockwise direction
Keywords
CFD(Computational Fluid Dynamics); Flocculator; Clock-wise;
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Times Cited By KSCI : 1  (Citation Analysis)
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