Analytical and experimental investigation of chlorine decay in water supply systems under unsteady hydraulic conditions

Angeliki Aisopou, Ivan Stoianov, Nigel Graham, Bryan Karney

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

This paper investigates the impact of the dynamic hydraulic conditions on the kinetics of chlorine decay in water supply systems. A simulation framework has been developed for the scale-adaptive hydraulic and chlorine decay modelling under steady- and unsteady-state flows. 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. By coupling novel instrumentation technologies for continuous hydraulic monitoring and water quality sensors for in-pipe water quality sensing a pioneering 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. The spatial and temporal resolution of experimental data provides new insights for the near real-time modelling and management of water quality as well as highlighting the uncertainty and challenges of accurately modelling the loss of disinfectant in water supply networks.
Original languageEnglish
JournalJournal of Hydroinformatics
Volume16
Issue number3
Pages (from-to)690-709
Number of pages20
ISSN1464-7141
DOIs
Publication statusPublished - 2013

Keywords

  • COMPUTER
  • ENGINEERING,
  • ENVIRONMENTAL
  • WATER
  • CORROSION SCALES
  • FRICTION
  • MODELS
  • DISCOLORATION
  • DETACHMENT
  • BIOFILMS
  • QUALITY
  • GROWTH
  • PIPES
  • SHEAR
  • analytical and experimental investigation
  • chlorine decay
  • unsteady flow
  • water distribution systems
  • WATER supply

Cite this

Aisopou, Angeliki ; Stoianov, Ivan ; Graham, Nigel ; Karney, Bryan. / Analytical and experimental investigation of chlorine decay in water supply systems under unsteady hydraulic conditions. In: Journal of Hydroinformatics. 2013 ; Vol. 16, No. 3. pp. 690-709.
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title = "Analytical and experimental investigation of chlorine decay in water supply systems under unsteady hydraulic conditions",
abstract = "This paper investigates the impact of the dynamic hydraulic conditions on the kinetics of chlorine decay in water supply systems. A simulation framework has been developed for the scale-adaptive hydraulic and chlorine decay modelling under steady- and unsteady-state flows. 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. By coupling novel instrumentation technologies for continuous hydraulic monitoring and water quality sensors for in-pipe water quality sensing a pioneering 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. The spatial and temporal resolution of experimental data provides new insights for the near real-time modelling and management of water quality as well as highlighting the uncertainty and challenges of accurately modelling the loss of disinfectant in water supply networks.",
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Analytical and experimental investigation of chlorine decay in water supply systems under unsteady hydraulic conditions. / Aisopou, Angeliki; Stoianov, Ivan; Graham, Nigel; Karney, Bryan.

In: Journal of Hydroinformatics, Vol. 16, No. 3, 2013, p. 690-709.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Analytical and experimental investigation of chlorine decay in water supply systems under unsteady hydraulic conditions

AU - Aisopou, Angeliki

AU - Stoianov, Ivan

AU - Graham, Nigel

AU - Karney, Bryan

PY - 2013

Y1 - 2013

N2 - This paper investigates the impact of the dynamic hydraulic conditions on the kinetics of chlorine decay in water supply systems. A simulation framework has been developed for the scale-adaptive hydraulic and chlorine decay modelling under steady- and unsteady-state flows. 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. By coupling novel instrumentation technologies for continuous hydraulic monitoring and water quality sensors for in-pipe water quality sensing a pioneering 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. The spatial and temporal resolution of experimental data provides new insights for the near real-time modelling and management of water quality as well as highlighting the uncertainty and challenges of accurately modelling the loss of disinfectant in water supply networks.

AB - This paper investigates the impact of the dynamic hydraulic conditions on the kinetics of chlorine decay in water supply systems. A simulation framework has been developed for the scale-adaptive hydraulic and chlorine decay modelling under steady- and unsteady-state flows. 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. By coupling novel instrumentation technologies for continuous hydraulic monitoring and water quality sensors for in-pipe water quality sensing a pioneering 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. The spatial and temporal resolution of experimental data provides new insights for the near real-time modelling and management of water quality as well as highlighting the uncertainty and challenges of accurately modelling the loss of disinfectant in water supply networks.

KW - COMPUTER

KW - ENGINEERING,

KW - ENVIRONMENTAL

KW - WATER

KW - CORROSION SCALES

KW - FRICTION

KW - MODELS

KW - DISCOLORATION

KW - DETACHMENT

KW - BIOFILMS

KW - QUALITY

KW - GROWTH

KW - PIPES

KW - SHEAR

KW - analytical and experimental investigation

KW - chlorine decay

KW - unsteady flow

KW - water distribution systems

KW - WATER supply

U2 - 10.2166/hydro.2013.038

DO - 10.2166/hydro.2013.038

M3 - Journal article

VL - 16

SP - 690

EP - 709

JO - Journal of Hydroinformatics

JF - Journal of Hydroinformatics

SN - 1464-7141

IS - 3

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