Experimental study of chlorine bulk decay in water supply pipes


ÖZDEMİR O. N. , Demir E.

JOURNAL OF HYDRAULIC RESEARCH, vol.45, no.6, pp.811-817, 2007 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 45 Issue: 6
  • Publication Date: 2007
  • Doi Number: 10.1080/00221686.2007.9521818
  • Title of Journal : JOURNAL OF HYDRAULIC RESEARCH
  • Page Numbers: pp.811-817
  • Keywords: water supply network pipe, chlorine bulk decay, bottle test, chlorination, disinfection, DISTRIBUTION-SYSTEMS

Abstract

Chlorine is the most common type of disinfectant in water supply networks. However, it is a highly unstable oxidizing agent and also known to be consumed in the bulk liquid phase (bulk decay) and at the pipe wall (wall decay). This experimental study was performed for two main purposes: first, to understand bulk decay variation as flow in drinking water supply pipes changes and second, to validate bottle test analysis for measuring chlorine bulk decay. The results indicated that a decrease in the flow rate in a water supply pipe can lead to a decreased bulk decay constant. In addition, the validity of the conventional method of bulk decay constant determination (bottle test analysis) was also confirmed in this study.