Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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A Study on Optimal Design of UV Contactor using an Optical Radiation Model

광학모델을 이용한 자외선 접촉조 최적 설계에 관한 연구

  • Choi, Younggyun (Department of Environmental Engineering, Daegu University) ;
  • Kim, Dooil (Civil & Environmental Division, POSCO Engineering & Construction Co. Ltd) ;
  • Kim, Sunghong (Department of Civil Engineering, Chosun University)
  • 최영균 (대구대학교 환경공학과) ;
  • 김두일 (포스코건설 토목환경사업본부) ;
  • 김성홍 (조선대학교 토목공학과)
  • Received : 2009.03.05
  • Accepted : 2009.06.08
  • Published : 2009.07.30
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Abstract

Because of refractory property of light, the travel path of UV light becomes longer than the straight line and shorter solely in water as UV light passes sequentially through air, quartz and water. Note that water significantly absorbs UV light. Hence, UV intensity shall be estimated to be lower when refraction is neglected than it is considered. Reflection is also critical for the design of UV radiation system. While the reflection at the interface of air and quartz is low enough to ignore, it is too high to be ignored at the interface of quartz and water. Assuming constant power, smaller length to width ratio of UV reactor is beneficial and single-lamp system is preferred to multi-lamps. Under the given cross section, optimal lamp positions could be decided. For example of an elliptical reactor with dual lamps, the optimal lamp locations shall be the 1/3 and 2/3 position of the longer axis.

Keywords

Acknowledgement

Supported by : 조선대학교

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