Development of Rectangular Airlift Bubble Column Installed with Support Material for Enhancement of Nitrogen Removal(ENVIRONMENTAL BIOTECHNOLOGY)
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概要
- 論文の詳細を見る
To enhance nitrogen removal during wastewater treatment using activated sludge, a rectangular airlift bubble column installed with support material is proposed. The flow characteristics and nitrogen removal performance were examined and compared with those of a column without support material. In the two columns, the riser was aerobic and the lower part of downcomer was anaerobic. The effects of operational conditions on the liquid circulation flow rate and liquid-phase volumetric mass transfer coefficient were examined. Using these flow characteristics, the distribution of dissolved oxygen (DO) concentration in the column was calculated. From the DO distribution, the anaerobic volume fraction in the column was estimated. The optimal anaerobic volume fraction for nitrogen removal was found to be approximately 50%. The column installed with support material showed higher nitrogen removal than the column without it.
- 社団法人日本生物工学会の論文
- 2004-10-25
著者
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中村 正秋
Department Of Chemical Engineering Nagoya University
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NAKAMURA Masaaki
Department of Biomaterials, Osaka Dental University
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Nakamura M
Division Of Molecular Chemistry Graduate School Of Engineering Hokkaido University
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Bando Y
Department Of Chemical Engineering Nagoya University
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Bando Yoshiyuki
Department Of Applied Chemistry Gifu University
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Nakamura Masaaki
Department Of Chemical Engineering Nagoya University
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Bando Y
Nagoya Univ. Nagoya Jpn
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MENG Lingguang
Department of Chemical Engineering, Nagoya University
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Meng Lingguang
Department Of Chemical Engineering Nagoya University
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Nakamura Masaaki
Department Of Applied Physics Faculty Of Science Tokyo University Of Science
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