A comparative study on a hydraulic and water-quality analysis method for determining rechlorination injection points for a water-supply network

Sang Myoung Lee, Ho Min Lee, Do Guen Yoo, Joong Hoon Kim

Research output: Contribution to journalArticle

Abstract

Water supply facilities are vulnerable to extremeweather events, such as droughts and floods. To establish a sustainable solution that resists accidents and disasters, a distributed system is required. To supply high-quality tap water using the existing water-supply network, rechlorination facilities must be installed to secure residual chlorine at the pipe end. In this study, a process is developed to determine the injection points and dosages of rechlorination using the latest pressure-driven analysis. The method was compared to the results of demand driven analysis methods. The proposed model was applied to P City in Korea to draw results. A detailed evaluation was performed to study how water pressure head and demand-based hydraulic and water quality analysis results impact the injection points and dosages of rechlorination. Thus, the existing demand-based model shows significant spatial deviations in the pressure head in the presence of water pressure drops, which subsequently lead to over-estimation of chlorine injection dosages for maintaining the concentration of residual chlorine. However, the proposed model involves a numerically validated theory and draws more reasonable results for hydraulic, water quality, and rechlorination dosages. The proposed model can be used as a decision-making tool based on hydraulic analysis for the supply of water of a stable quality.

Original languageEnglish
Article number697
JournalWater (Switzerland)
Volume11
Issue number4
DOIs
Publication statusPublished - 2019 Apr 1

Fingerprint

water quality analysis
Water Supply
Water Quality
Water supply
water management
water supply
Water quality
Chlorine
comparative study
fluid mechanics
chlorine
Hydraulics
injection
hydraulics
water quality
Pressure
water
Injections
Water
dosage

Keywords

  • Hydraulic analysis
  • Pressure-driven analysis
  • Rechlorination facility
  • Residual chlorine
  • Water quality analysis
  • Water supply network

ASJC Scopus subject areas

  • Biochemistry
  • Geography, Planning and Development
  • Aquatic Science
  • Water Science and Technology

Cite this

A comparative study on a hydraulic and water-quality analysis method for determining rechlorination injection points for a water-supply network. / Lee, Sang Myoung; Lee, Ho Min; Yoo, Do Guen; Kim, Joong Hoon.

In: Water (Switzerland), Vol. 11, No. 4, 697, 01.04.2019.

Research output: Contribution to journalArticle

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