Disinfection and oxidation of sewage effluent water using ozone and UV technologies

B. S. Oh, S. J. Park, Y. J. Jung, S. Y. Park, J. W. Kang

Research output: Chapter in Book/Report/Conference proceedingChapter

18 Citations (Scopus)


This study was aimed at exploring the reclamation of sewage treatment plant effluent water (SEW) as an alternative water resource. For the oxidation of SEW, an ozone-UV system, based on the results of the combined ozone/UV process performed in our previous study, was set up under practical conditions, including a series type, continuous mode, semi-pilot scale operation (1.5 m3/d). As a result, the serial contact of the ozone and UV reactors showed lower CODCr and TOC removal efficiencies. However, these were greatly enhanced by recycling the water flow of the ozone-UV system at 40Q, as a result of the improvements in the transferred ozone dose in the ozone reactor and the contact efficiency between photons and ozone in the UV reactor, which approached that achieved in the combined ozone/UV process. For the disinfection of SEW, carried out in a syringe-type batch reactor, the increase of instantaneous ozone demand (ozone ID) led to a higher inactivation efficiency, an increased UV transmittance due to ozonation, and an enhanced inactivation rate of E. coli in the UV reactor. Additionally, it was concluded that the ozone/UV process could overcome the limitations of the ozone alone and UV alone processes for the reclamation of sewage effluent water.

Original languageEnglish
Title of host publicationWastewater Reclamation and Reuse for Sustainability
EditorsI.S. Kim, S. Kim, J. Cho
Number of pages8
Publication statusPublished - 2007

Publication series

NameWater Science and Technology
ISSN (Print)0273-1223

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Water Science and Technology


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