A Study on Kinetics of Oxygen in Small Size Pond using Oxygen Solubilization Device System

산소 용해수 발생 장치를 이용한 소형 연못의 산소 거동 연구

  • Kim, Young-Taek (Environment Research Department, Korea Institute of Construction Technology) ;
  • Bae, Yoon-Sun (Department of Environmental Engineering, University of Seoul) ;
  • Roh, Eun-Kyung (Department of Environmental Engineering, University of Seoul) ;
  • Park, Chul-Hwi (Department of Environmental Engineering, University of Seoul)
  • 김영택 (한국건설기술연구원 건설환경연구부) ;
  • 배윤선 (서울시립대학교 환경공학부) ;
  • 노은경 (서울시립대학교 환경공학부) ;
  • 박철휘 (서울시립대학교 환경공학부)
  • Received : 2005.11.01
  • Published : 2006.05.30

Abstract

The major problem in closing water like lakes and ponds in Korea is that because they are exposed to surrounding, so easily polluted. The pollution in closing water can be caused by not only artificial factor like sewage but also natural factor like elution from sediment. For insurance of safe and satisfied water source, lots of studies and projects are now going on. In this study, we examined the behavior and effect of microbubble ($3{\sim}10{\mu}m$) produced by device called O.S.D (Oxygen Solubillization Device) in small size pond. The value of oxygen transfer coefficient ($K_La$) was 0.68/min independently of air flow rate, 6.5 times higher than commercial aeration stone and the variation of nitrogen concentration was $0.008NO_3/O_2$, DO concentration was potentially saturated for 24 hr. From the results of pilot plant, SOD of experiment (O.S.D) and control were $12.18gO_2{\cdot}m^{-2}{\cdot}d^{-1}$ and $47.95gO_2{\cdot}m^{-2}{\cdot}d^{-1}$ respectively. In conclusion, because O.S.D has extraordinary physico-chemical characteristics, it can contribute to improvement of both the waterbody and the sediment environment.

Keywords

References

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