Korean Journal of Chemical Engineering

, Volume 23, Issue 4, pp 595–600 | Cite as

Enhancement of UV disinfection efficiency by arraying inclined lamps



A computational study on UV disinfection efficiency has been developed based on the Lambert-Beer law. Comparing a UV lamp arranged vertically to the flow of one arranged on an incline led to the conclusion that UV doses could be increased. The study of the inclination effect was divided into four stages in order to evaluate the increase in the UV dose at each stage. The slope of the inclined UV lamp ranged between 1‡ and 89‡ (0‡<θ<90‡) with other parameters such as diameter of the UV lamp, distance from the surface of the UV lamp, and velocity also recorded. The increase of UV dosage was largely affected by the diameter and velocity of the UV lamp, especially on a lesser slope. To obtain a greater UV dose, it was necessary to assemble UV lamps with lesser slopes. By arranging lamps on an incline, UV disinfection could be enhanced.

Key words

UV Disinfection Inclined Lamp UV Dose Slope Diameter of the UV Lamp Velocity 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Alam, M. Z. B., Otaki, M., Furumai, H. and Ohgaki, S., “Direct and indirect inactivation of Microcystis Aeruginosa by UV-radiation,”Water Res.,35(4), 1008 (2001).CrossRefGoogle Scholar
  2. Andreadakis, A., Mamais, D., Christoulas, D. and Kabylafka, S., “Ultraviolet disinfection of secondary and tertiary effluent in the mediterranean region,”Water Sci. Technol.,40(4–5), 253 (1999).CrossRefGoogle Scholar
  3. Blatchley, E. R. III, Wood, W. L. and Schuerch, P., “UV pilot testing: intensity distribution and hydrodynamics,”J. Environ. Eng.,121(3), 258 (1995).CrossRefGoogle Scholar
  4. Campbell, A. T. and Wallis, P., “The effect of UV irradiation on humanderived Giardia Lambia cysts,”Water Res.,36(4), 963 (2002).CrossRefGoogle Scholar
  5. Craik, S. A., Weldon, D., Finch, G. R., Bolton, J.R. and Belosevic, M., “Inactivation of Cryptosporidium Parvum Oocysts using mediumand low-pressure ultraviolet radiation,”Water Res.,35(6), 1387 (2001).CrossRefGoogle Scholar
  6. Iranpour, R., Garnas, G., Moghaddam, O. and Taebi, A., “Hydraulic effects on ultraviolet disinfection: modification of reactor design,”Water Environ. Res.,71(1), 114 (1999).CrossRefGoogle Scholar
  7. Jolis, D. and Hirano, R.,Microfiltration and ultraviolet light disinfection for water reclamation, Bur Eng Dep Public Works., City and County of San Francisco (1993).Google Scholar
  8. Loge, F. J., Emerick, R.W., Thompson, D. E., Nelson, D.C. and Darby, J. L., “Factors influencing ultraviolet disinfection performance part I: Light penetration to wastewater particles,”Water Environ. Res.,71(3), 377 (1999).CrossRefGoogle Scholar
  9. Moreno, B., Goni, F., Fernandez, O. and Martinez, J. A., “The disinfection of wastewater by ultraviolet light,”Water Sci. Technol.,35(11–12), 233 (1997).CrossRefGoogle Scholar
  10. Qualls, R.G., Flynn, M. P. and Johnson, J. D., “The role of suspended particles in ultraviolet disinfection,”J. Water Pol. Control Fed.,55, 1280 (1983).Google Scholar
  11. Rajala-Mustonen, R. L., Toivola, P. S. and Heinonen-Tanski, H., “Effects of peracetic acid and UV irradiation on the inactivation of coliphages in wastewater,”Water Sci. Technol.,35(11–12), 237 (1997).CrossRefGoogle Scholar
  12. Scheible, O.K., “Development of a rationally based design protocol for the UV light disinfection process,”J. Water Pol. Control Fed.,59, 25 (1987).Google Scholar
  13. USEPA,Ultraviolet disinfection technology assessment, EPA 832 R-92-004 (1992).Google Scholar

Copyright information

© Korean Institute of Chemical Engineering 2006

Authors and Affiliations

  1. 1.Ecology & Environment Research InstituteShingang Hi-Tech Co. Inc.ChungnamKorea
  2. 2.Department of Environmental EngineeringCheongju UniversityChungbukKorea

Personalised recommendations