G0900201 上向流傾斜板式沈殿池における密度流流動機構

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タイトル別名
  • G0900201 Structure of Density Flow in a Sedimentation Basin with Inclined Plate Settler

抄録

A removal efficiency of turbidity is sometimes reduced in an sedimentation basin equipped with inclined plate settler in summer afternoon by the cause of density flow. The purpose of this study is to clarify the flow structure of density flow and improve the removal efficiency. The three dimensional numerical simulation was carried out to clarify the details of flow structure in a sedimentation basin, by considering the change of inflow water temperature. The results show that the density flow occurs when the temperature of inflow water raised, and forms the non-uniform flow field by an increment of upward flow velocity in the settler. This phenomena causes the carry turbidity matters over from an overflow trough, and worse the treated water quality. Furthermore, effect of baffle plate was examined to reduce the influence of density flow and confirmed the improvement on the water quality.

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  • 年次大会

    年次大会 2015 (0), _G0900201--_G0900201-, 2015

    一般社団法人 日本機械学会

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