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Behavior of Organic Matter, Chlorine Residual and Disinfection By-Products (DBPs) Formation during UV Treatment of Wastewater Treatment Plant Effluents

하수처리장 방류수의 UV 처리시 유기물질, 잔류염소 및 소독부산물 생성 거동

  • 한지희 (국민대학교 건설시스템공학부) ;
  • 손진식 (국민대학교 건설시스템공학부)
  • Received : 2013.12.26
  • Accepted : 2014.02.11
  • Published : 2014.02.15

Abstract

Study on effluent organic matter (EfOM) characteristic and removal efficiency is required, because EfOM is important in regard to the stability of effluents reuse, quality issues of artificial recharge and water conservation of aqueous system. UV technology is widely used in wastewater treatment. Many reports have been conducted on microbial disinfection and micro pollutant reduction with UV treatment. However, the study on EfOM with UV has limited because low/medium pressure UV lamp is not sufficient to affect refractory organics. The high intensity of pulsed UV would mineralize EfOM itself as well as change the characteristics of EfOM. Chlorine demand and DBPs formation is affected on the changed amounts and properties of EfOM. The objective of this study is to investigate the effect on EfOM, chlorine residual, and chlorinated DBPs formation with low pressure and pulsed UV treatment. The removal of organic matter through low pressure UV treatment is insignificant effect. Pulsed UV treatment effectively removes/transforms EfOM. As a result, the chlorine consumption is changed and chlorine DBPs formation is decreased. However, excessive UV treatment caused problems of increasing chlorine consumption and generating unknown by-products.

Keywords

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