Abstract

Isolation valve closures (IVCs) can effectively assist pipe maintenance and management in water distribution systems (WDSs), but they inevitably cause secondary impacts on the WDS’s performance. Previous studies have mainly focused on how to optimally operate or locate valves, but few efforts have been made on investigating the secondary impacts induced by IVCs. To this end, six quantitative metrics are proposed to comprehensively evaluate physical, hydraulic, and water quality impacts caused by IVCs. These metrics are used to explore how different network topologies, valve closing strategies, and valve placement strategies affect an IVC’s overall impact on WDS performance. Applications to three real WDSs show the following: (1) the proposed metrics can effectively reveal underlying impacts caused by IVCs, especially the associated water quality risk that has rarely been considered before; (2) in addition to their surrounding pipes, IVCs can affect the water quality in pipes that are far away from the isolated segments; (3) a highly looped WDS is more likely to have higher water quality risk (e.g., due to flow direction reversal) but a lower hydraulic influence level (e.g., low pressure) compared to a WDS with many branched structures; and (4) while closing valves near the failed pipe is an overall strategy to reduce hydraulic impacts, it may also produce high water quality risk. The proposed metrics and the assessment framework are practically meaningful as they offer not only an improved understanding of the secondary impacts caused by IVCs, but also guidance for the decision-making process regarding valve maintenance and management.

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Data Availability Statement

All data, models (INP files), or codes that support the findings of this study are available from the corresponding author upon reasonable request. The models (INP files) used in this study are available as Supplemental Materials, where these data are executed using the free software downloaded from https://www.epa.gov/water-research/epanet.

Acknowledgments

This study was supported by the National Natural Science Foundation of China (52179080), and the NSFC/RGC Joint Research Scheme (Grant Nos. 52261160379 and N_PolyU599/22). Furthermore, Prof. Savic has received funding from the European Research Council (ERC) for the Water-Futures project under the European Union’s Horizon 2020 research and innovation program (Grant Agreement No. 951424).

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Go to Journal of Water Resources Planning and Management
Journal of Water Resources Planning and Management
Volume 150Issue 8August 2024

History

Received: Nov 27, 2023
Accepted: Feb 12, 2024
Published online: May 16, 2024
Published in print: Aug 1, 2024
Discussion open until: Oct 16, 2024

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Zixuan Zheng [email protected]
Ph.D. Candidate, College of Civil Engineering and Architecture, Zhejiang Univ., A501, Anzhong Building, 866 Yuhangtang Rd., Hangzhou 310058, China. Email: [email protected]
Professor, College of Civil Engineering and Architecture, Zhejiang Univ., A501, Anzhong Building, 866 Yuhangtang Rd., Hangzhou 310058, China (corresponding author). ORCID: https://orcid.org/0000-0003-3048-7086. Email: [email protected]
Zhexian Qi, Ph.D. [email protected]
College of Civil Engineering and Architecture, Zhejiang Univ., A501, Anzhong Building, 866 Yuhangtang Rd., Hangzhou 310058, China; Assistant Professor, No. 19 Dept., Beijing Institute of Tracking and Telecommunication Technology, Beijing 100094, China. Email: [email protected]
Senior Engineer, Zhejiang Institute of Hydraulics & Estuary, 658 Hanghai Rd., Hangzhou 310020, China. Email: [email protected]
Master’s Candidate, College of Civil Engineering and Architecture, Zhejiang Univ., A501, Anzhong Building, 866 Yuhangtang Rd., Hangzhou 310058, China. Email: [email protected]
Associate Professor, Dept. of Civil and Environmental Engineering, Hong Kong Polytechnic Univ., Hung Hom, Kowloon 999077, Hong Kong. ORCID: https://orcid.org/0000-0002-9200-904X. Email: [email protected]
Chief Executive Officer, KWR Water Research Institute, Groningenhaven 7, Nieuwegein, PE 3433, Netherlands; Professor, Centre for Water Systems, Univ. of Exeter, North Park Rd., Exeter EX44QF, UK; Visiting Professor, Faculty of Civil Engineering, Univ. of Belgrade, 1 Studentski trg, Belgrade 11000, Serbia. ORCID: https://orcid.org/0000-0001-9567-9041. Email: [email protected]
Professor, Dept. of Water Management, Delft Univ. of Technology, Delft 2628 CD, Netherlands. ORCID: https://orcid.org/0000-0002-0934-4470. Email: [email protected]

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