Ozonation characteristics of DOM in secondary effluent based on fluorescence PARAFAC analysis

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Abstract

The characteristics of DOM in secondary effluent at different ozone dosages were investigated based on EEM parallel factor analysis. There were three fluorescent components in secondary effluent. Component 1was protein-like substances and the other two components were humic-like substances. The three components will react with ozone intensively at ozone dosage 0.98 mgO3/mgTOC. Linear regression analysis showed that the reaction between ozone and component 1and 2 could account for the removal of color, UV254 and UV280. In addition, the HPLC-SEC analysis confirmed the PARAFAC analysis results and revealed that ozone will react preferentially with small molecular weight substances in component 1. However, there was little reaction between ozone and high molecular weight substances in component 1.

Original languageEnglish
Pages (from-to)427-433
Number of pages7
JournalZhongguo Huanjing Kexue/China Environmental Science
Volume35
Issue number2
StatePublished - 1 Feb 2015
Externally publishedYes

Keywords

  • Fluorescence characteristics
  • Ozonation
  • Parallel factor analysis
  • Secondary effluent

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