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Industrial water network vulnerability analysis using dynamic inoperability input-output model.

Yanmei Zhang1, Zhiwei Li2, Kathleen B Aviso3

  • 1School of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China.

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|April 14, 2022
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Summary
This summary is machine-generated.

Industrial parks with integrated water networks show increased robustness against failures but slower recovery. Supply-driven models better assess cascading water shortages in industrial parks.

Keywords:
Cascade effectDynamic inoperability input-output modelSustainability managementVulnerabilityWater network

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Area of Science:

  • Environmental Engineering
  • Industrial Ecology
  • Systems Engineering

Background:

  • Industrial parks facilitate process integration and water conservation through inter-plant water networks.
  • Increased interconnections in integrated water networks can lead to cascading failures during water shortages.
  • Assessing indirect impacts of water scarcity requires appropriate modeling techniques.

Purpose of the Study:

  • To compare demand-driven and supply-driven Inoperability Input-output Models (IIM) for water network analysis.
  • To develop a Vulnerability Assessment Framework using the Dynamic Input-Output Model (DIIM) for failure propagation.
  • To evaluate the time-dependent vulnerabilities (robustness, adaptability, recoverability) of industrial water networks.

Main Methods:

  • Defined inoperability as fractional loss of water flow.
  • Compared demand-driven and supply-driven IIM applicability.
  • Developed and applied a DIIM-based framework to simulate cascading failures.
  • Assessed industrial parks With and Without Integrated Optimal Water Network (WWN and WOWN) using vulnerability indicators.

Main Results:

  • Supply-driven IIM is more suitable for water network cascading failure analysis, showing higher average inoperability (16%).
  • Plant dependence on freshwater correlates with inoperability change rate and time to equilibrium.
  • The WWN demonstrated fivefold greater robustness than WOWN, but with one-sixth the recovery rate.

Conclusions:

  • Integrated water networks enhance robustness but may reduce adaptability and recoverability.
  • Supply-driven IIM and DIIM are effective tools for analyzing water network vulnerabilities in industrial parks.
  • Findings provide scientific insights for developing effective park-wide water management strategies.