Effects of Setting of Baffle Plates to Submerged Membrane Modules on the Production of Larger bubbles and Change of Fluid Flow Field
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- MARUBAYASHI Osamu
- 東京都市大学大学院 工学研究科 都市工学専攻
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- NAGAOKA Hiroshi
- 東京都市大学 工学部 都市工学科
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- TOYOOKA Kazuhiro
- 株式会社明電舎 水・環境システム事業部 技術部
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- SIBUYA Sachiko
- 株式会社明電舎 水・環境システム事業部 膜・水処理プラント部
Bibliographic Information
- Other Title
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- 浸漬型膜モジュールにおける邪魔板の設置が流体挙動に及ぼす影響
- シンシガタマク モジュール ニ オケル ジャマイタ ノ セッチ ガ リュウタイ キョドウ ニ オヨボス エイキョウ
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Abstract
This study aims at elucidating fouling mitigation effect by setting of baffles to submerged flat-sheet membrane modules. Bubble size, shear stress and liquid-flow velocity were measured using laboratory scale MBR. It was found that L-shape baffles can generate larger size bubbles causing larger shear stress, whose value was 1.5 times larger than that inthe no-baffle case. Velocity field measurement revealed that slug flow is more effective than bubble flow in producing larger shear stress on membrane surface and that setting of baffle plate to submerged membrane modules is effective in producing larger shear stress on membrane surface. Thereby causing instantaneous large shear stress on membrane surface resulting in mitigating of membrane fouling.
Journal
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- Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)
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Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) 71 (7), III_467-III_478, 2015
Japan Society of Civil Engineers