Chlorine decay under steady and unsteady-state hydraulic conditions

Ivan Stoianov, Angeliki Aisopou

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Abstract

This paper describes a simulation framework for the scale-adaptive hydraulic and chlorine decay modelling under steady and unsteady-state flows. Bulk flow and pipe wall reaction coefficients are replaced with steady and unsteady-state reaction coefficients. An unsteady decay coefficient is defined which depends upon the absolute value of shear stress and the rate of change of shear stress for quasi-unsteady and unsteady-state flows. A preliminary experimental and analytical investigation was carried out in a water transmission main. The results were used to model monochloramine decay and these demonstrate that the dynamic hydraulic conditions have a significant impact on water quality deterioration and the rapid loss of disinfectant residual. © 2013 The Authors.
Original languageEnglish
JournalProcedia Engineering
Volume70
Pages (from-to)1592-1601
Number of pages10
ISSN1877-7058
DOIs
Publication statusPublished - 2014
Event12th International Conference on Computing and Control for the Water Industry - Perugia, Italy
Duration: 2 Sep 20134 Sep 2013
Conference number: 12

Conference

Conference12th International Conference on Computing and Control for the Water Industry
Number12
CountryItaly
CityPerugia
Period02/09/201304/09/2013

Keywords

  • Engineering (all)
  • Disinfectant decay
  • Steady and unsteady-state flows

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