Effect of mountain-type baffle set between membrane unit and air diffuser on bubble flow profile over flat-sheet membrane and mitigation of fouling in submerged MBRs
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- NOGUCHI Tomoyo
- 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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- SAMESHIMA Shoichi
- 株式会社明電舎 水・環境システム事業部 戦略企画部 企画課
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- TOYOOKA Kazuhiro
- 株式会社明電舎 水・環境システム事業部 戦略企画部 システム開発課
Bibliographic Information
- Other Title
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- 浸漬型MBRにおける山型邪魔板を用いた曝気洗浄方式が気泡流の流れ場と膜面洗浄効果に与える影響
- シンシガタ MBR ニ オケル サンガタ ジャマイタ オ モチイタ バッキ センジョウ ホウシキ ガ キホウリュウ ノ ナガレバ ト マクメン センジョウ コウカ ニ アタエル エイキョウ
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Abstract
For mitigation of membrane fouling without increasing power consumption for blowers, a mountain-Type baffle was set between membrane unit and air diffuser to disperse rising air bubbles and provide flat-sheet membranes more uniform velosity profiles. A laboratory experiment was conducted toinvestigate influence of setting patterns of the baffle on trans-membrane pressure increase rate. PIV method was also used for measuring valosity profiles over fla-sheet membrane surface. The baffle was found to be effective for making water-phase velocity profile more uniform and providing more uniform shear stress on membrane surface and was found to be effective method for mitigating membrane fouling without increasing bubble flowrate.
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) 74 (7), III_433-III_443, 2018
Japan Society of Civil Engineers