Effect of ozonation on the biological treatability of a textile mill effluent

O. Karahan, H. Dulkadiroglu, I. Kabdasli, S. Sozen*, F. Germirli Babuna, D. Orhon

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


Ozonation, applied prior to biological processes, has proved to be a very effective chemical treatment step mostly for colour removal when soluble dyes are used in textile finishing operations. Its impact on biological treatability however has not been fully evaluated yet. This study evaluates the effect of ozonation on the quality of wastewater from a textile mill involving bleaching and reactive dyeing of cotton and synthetic knit fabric. The effect of ozonation on COD fractionation and kinetic coefficients defining major biological processes is emphasised. The results indicate that the extent of ozone applied greatly affects the remaining organic carbon composition in the wastewater. The relative magnitude of different COD fractions varies as a function of the ozone dose. Ozonation does not however exert a measurable impact on the rate of major biological processes.

Original languageEnglish
Pages (from-to)1325-1336
Number of pages12
JournalEnvironmental Technology (United Kingdom)
Issue number12
Publication statusPublished - 1 Dec 2002


  • Biological processes
  • Cod fractionation
  • Ozonation
  • Process kinetics
  • Textile wastewater


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