Facility location model for booster disinfection of water supply networks

Michael E. Tryby, Dominic L. Boccelli, James G. Uber, Lewis A. Rossman

Research output: Contribution to journalArticlepeer-review

98 Scopus citations

Abstract

Secondary or postdisinfection is widely used to maintain protective levels of disinfectant within water distribution systems. In contrast to conventional methods that apply disinfectant only at the treatment works, booster disinfection reapplies disinfectant at strategic locations within the distribution system to compensate for the losses that occur as it decays over time. Building on the writers' previous work, this paper addresses the problem of locating disinfectant booster stations that minimize the dosage required to maintain residuals throughout the supply network, and introduces a useful parameterization for disinfectant source types. The model is related to the general fixed-charge facility location problem and is formulated as a mixed integer linear programming problem. Results for an example network show that disinfectant dosage savings are achievable with the adoption of booster disinfection, and that the rate of savings decreases as the number of booster stations utilized increases. Furthermore, booster disinfection may provide a more even distribution of disinfectant concentrations throughout the network, and has the potential to reduce aggregate exposure of the population to chlorine (and its by-products) while simultaneously improving residual coverage in the periphery of the distribution system.

Original languageEnglish (US)
Pages (from-to)322-333
Number of pages12
JournalJournal of Water Resources Planning and Management
Volume128
Issue number5
DOIs
StatePublished - Sep 2002
Externally publishedYes

Keywords

  • Disinfection
  • Location
  • Mathematical models
  • Optimization
  • Water distribution
  • Water quality

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Geography, Planning and Development
  • Water Science and Technology
  • Management, Monitoring, Policy and Law

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