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    Study of Flow in a Blanket Clarifier Using Computational Fluid Dynamics

    Source: Journal of Environmental Engineering:;2008:;Volume ( 134 ):;issue: 006
    Author:
    Rome-Ming Wu
    ,
    Tsung-Hao Lee
    ,
    Wen-Jie Yang
    DOI: 10.1061/(ASCE)0733-9372(2008)134:6(443)
    Publisher: American Society of Civil Engineers
    Abstract: 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.
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      Study of Flow in a Blanket Clarifier Using Computational Fluid Dynamics

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/68930
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    • Journal of Environmental Engineering

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    contributor authorRome-Ming Wu
    contributor authorTsung-Hao Lee
    contributor authorWen-Jie Yang
    date accessioned2017-05-08T22:01:18Z
    date available2017-05-08T22:01:18Z
    date copyrightJune 2008
    date issued2008
    identifier other%28asce%290733-9372%282008%29134%3A6%28443%29.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/68930
    description abstractThis 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.
    publisherAmerican Society of Civil Engineers
    titleStudy of Flow in a Blanket Clarifier Using Computational Fluid Dynamics
    typeJournal Paper
    journal volume134
    journal issue6
    journal titleJournal of Environmental Engineering
    identifier doi10.1061/(ASCE)0733-9372(2008)134:6(443)
    treeJournal of Environmental Engineering:;2008:;Volume ( 134 ):;issue: 006
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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