Radiation treatment of secondary effluent from a sewage treatment plant

Jinho Jung, Jeong Hyo Yoon, Hung Ho Chung, Myun Joo Lee

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Radiation treatment using gamma-rays was investigated in order to reclaim the secondary effluent from a sewage treatment plant. The radiation treatment reduced BOD by 85% irrespective of absorbed dose, and the removals of COD, TOC and color were up to 64%, 34% and 88%, respectively, at a dose of 15 kGy. Gamma-rays effectively disinfected microorganisms and completely removed them at a dose of 0.3 kGy. The combination of gamma-rays and titanium dioxide significantly improved the treatment process. The increases of COD, TOC and color removals were 40%, 10% and 20%, respectively. As confirmed by EPR and the spin-trapping method, this increase was partly caused by the increase of hydroxyl radicals in the presence of titanium dioxide.

Original languageEnglish
Pages (from-to)533-537
Number of pages5
JournalRadiation Physics and Chemistry
Issue number4-5
Publication statusPublished - 2002 Nov


  • EPR
  • Gamma-rays
  • Sewage effluent
  • Titanium dioxide

ASJC Scopus subject areas

  • Radiation


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