Study of Flow in a Blanket Clarifier using Computational Fluid Dynamics
學年 96
學期 2
出版（發表）日期 2008-06-01
作品名稱 Study of Flow in a Blanket Clarifier using Computational Fluid Dynamics
作品名稱（其他語言）
著者 Wu, Rome-ming; Lee, Tsung-hao; Yang, Wen-jie
單位 淡江大學化學工程與材料工程學系
出版者 Reston: American Society of Civil Engineers
著錄名稱、卷期、頁數 Journal of Environmental Engineering 134(6), pp.443-455
摘要 This work simulated the flow pattern of the sludge blanket clarifier at the Bansin Water Treatment Plant, Taiwan by multiphase flow, three-dimensional analysis. The following three models were developed individually: One-phase flow (water) in the clarifier — this model acquires the basic water-flow pattern; a homogeneous porous medium at the bottom of the clarifier — this porous medium represents the sludge blanket; and, the Eulerian granular multiphase model, which was utilized to obtain solid effluent flux and to determine the effects of particle size and density on sludge blanket stability. Analytical results indicated that the clarifier has two principal circulations inside and outside the reaction well. A plentiful, dense and thick sludge blanket should exist at the clarifier bottom; otherwise particles could flow out through the gap between bottom of the reaction well and top of blanket surface, resulting in poor water quality. In the multiphase flow model, large particles and a high particle density are positively correlated with sludge blanket stability.
關鍵字
語言 en
ISSN 0733-9372
期刊性質 國外
收錄於 SCI EI
產學合作
通訊作者
審稿制度
國別 USA
公開徵稿
出版型式
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