The Journal of
the Korean Society on Water Environment

The Journal of
the Korean Society on Water Environment

Bimonthly
  • ISSN : 2289-0971 (Print)
  • ISSN : 2289-098X (Online)
  • KCI Accredited Journal

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Title A Study on the Oxygen Transfer Characteristics in a Deep Shaft Activated Sludge Process
Authors 김환기 ; 양봉용 ( Hwan Gi Kim ; Bong Yong Yang )
Page pp.119-128
ISSN 2289-0971
Abstract An experimental study on the oxygen transfer characteristics in a U-type deep shaft system of 32m depth as an aeration tank has been performed. According to the results of this study, total over-all oxygen transfer coefficient(K_La) in downcomer had calculated to be 45.8∼174.7/hr. Oxygen transfer ability in this deep shaft system was higher than diffused aeration, since oxygen transfer rate was 0.7∼1.8 ㎏-O₂/㎥ hr and oxygen dissolution efficiency was 17.3-6.1%, average oxygen transfer efficiency was 2.25 ㎏-O₂/Kw ·hr.
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