Simultaneous Minimization of Water Age and Pressure in Water Distribution Systems by Pressure Reducing Valves

Kristina Korder (), Hao Cao (), Elad Salomons (), Avi Ostfeld () and Pu Li ()
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Kristina Korder: Technische Universität Ilmenau
Hao Cao: Technische Universität Ilmenau
Elad Salomons: Technion – Israel Institute of Technology
Avi Ostfeld: Technion – Israel Institute of Technology
Pu Li: Technische Universität Ilmenau

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), 2024, vol. 38, issue 10, No 3, 3579 pages

Abstract: Abstract Pressure reducing valves (PRVs) are essentially used to reduce operational pressures in water distribution systems (WDSs) to minimize water leakage. However, water age in a WDS is an important variable describing the water quality and should be kept as low as possible. Therefore, the aim of this study is to investigate the possibility and potential of simultaneously minimizing both pressure and water age by using PRVs. To determine the optimal location and setting of PRVs, a mixed-integer nonlinear programming (MINLP) problem is formulated with minimization of the sum of the weighted total water age and pressure as the objective function, where the weighting factor can be defined by the user’s preference. The equality constraints consist of the hydraulic equations and water age functions to describe pressure and water age in the distribution network, while the inequality constraints ensure them in the defined operating ranges, respectively. Applying the proposed approach to two case studies, the results show that both water age and pressure can indeed be significantly reduced by the optimized position and setting of the PRVs.

Keywords: Optimization; MINLP; WDS; PRV placement; Water pressure; Water age (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s11269-024-03828-6

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