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[China's Reuse Water Development and Utilization Potential Based on the RDA-REM Model].

Jin-Tao Zheng1,2, Tao Ma1,3, Jiu-Fu Liu1,3

  • 1Nanjing Hydraulic Research Institute, Nanjing 210029, China.

Huan Jing Ke Xue= Huanjing Kexue
|May 25, 2021
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China

Keywords:
RDA-REM modelpotential analysisredundancy analysis(RDA)reused waterwater resources management

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Area of Science:

  • Environmental Science
  • Water Resource Management
  • Sustainable Development

Context:

  • China faces increasing water scarcity and aims to optimize water resource allocation.
  • Efficient utilization of reuse water is crucial for sustainable development and meeting growing demands.

Purpose:

  • To analyze factors influencing reuse water development and utilization in China.
  • To establish a prediction model for reuse water potential and identify key indicators.
  • To reveal driving and constraint mechanisms for reuse water resource management.

Summary:

  • A random effects model (REM) was developed to predict reuse water potential, identifying ecological water consumption, pipeline density, investment in treatment facilities, and wastewater treatment as key indicators.
  • The model demonstrated high fitting accuracy, with a maximum error of -8.5%.
  • Reuse water development is projected to reach 12.9 billion m³ by 2025, indicating significant future growth.

Impact:

  • Optimizes national urban water supply structures.
  • Enhances the reuse rate of regional water resources.
  • Supports China's goals for efficient water resource management and sustainable development.