Dissolved Oxygen Distribution in a Rectangular Airlift Bubble Column for Biological Nitrogen Removal

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Lingguang Meng¹  Masaaki Nakamura¹  Yoshiyuki Bando¹ 

[1] Department of Chemical Engineering, Nagoya University

关键词: Rectangular Bubble Column;    Airlift;    Dissolved Oxygen Distribution;    Nitrogen Removal;   

DOI  :  10.1252/jcej.37.1005

来源: Maruzen Company Ltd

【 摘 要 】

References(16)Cited-By(5)The rectangular airlift bubble column where anaerobic and aerobic regions coexisted was used, and the treatment of wastewater including nitrogen was performed. The effects of equipment and operation conditions on the gas holdup, liquid-phase volumetric mass transfer coefficient and liquid circulation flow rate were investigated in two different-size columns. On the basis of oxygen balance, the distribution of dissolved oxygen concentration in the column was calculated by using the experimental equations of flow characteristics. The results of wastewater treatment proved that the nitrogen removal was controlled by the volume fraction of anaerobic region.

【 授权许可】

Unknown