Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Studies on Chlorine Demand and Its Decay Kinetics in Chlorinated Sewage Effluents

하수의 염소 소독시 총잔류염소 감소 특성에 관한 연구

  • Beck, Youngseog (Korea Environment & Waterworks Institute) ;
  • Sohn, Jinsik (School of civil and Environment Engineering, Kookmin University)
  • 백영석 (한국환경수도연구소) ;
  • 손진식 (국민대학교 건설시스템공학부)
  • Received : 2004.12.02
  • Accepted : 2004.12.16
  • Published : 2005.03.30
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Abstract

Chlorination of wastewater is recently practiced in Korea. While many researchers have studied the kinetics of aqueous chlorine(HOCl) with nitrogeneous compounds and other organic/inorganic contaminants in drinking water, the researches of wastewater chlorination are relatively few. The purpose of this study was to investigate the chlorine decay kinetics and parameters on wastewater chlorination. Chlorine decay rate increased with increasing initial chlorine concentration. The parameters affecting chlorine decay rate were different in each wastewater treatment plant. One of the most important parameters affecting chlorine decay was initial chlorine concentration, and other parameters such as $NH_3-N$, total coliform, $UV_{254}$ and Fe were also affected. The decay ratio of chlorine was decreased with increasing initial chlorine concentration, and the disinfection efficiency showed good correlation with the decay ratio.

Keywords

References

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