Information system with multiple data layer approach to select the C&D waste landfilling infrastructure

Area of Science:

• Environmental Science
• Urban Planning
• Waste Management

Background:

• Landfilling is a primary method for managing construction and demolition (C&D) waste.
• Selecting appropriate C&D waste landfill sites is crucial for minimizing environmental and social impacts.
• Existing methods may not fully integrate diverse environmental, social, and economic factors.

Purpose of the Study:

• To propose and validate an integrated approach for selecting optimal C&D waste landfill sites.
• To develop a decision-making framework that incorporates multiple criteria for landfill site selection.
• To provide a practical tool for urban planners and waste management authorities.

Main Methods:

• A hybrid approach combining Fuzzy Analytic Hierarchy Process (F-AHP) and Geographic Information System (GIS).
• Multi-criteria decision analysis considering environmental, social, and economic factors.
• Case study application in Shenzhen, China, to demonstrate the model's efficacy.

Main Results:

• The proposed F-AHP and GIS model successfully identified potential C&D waste landfill sites.
• Approximately 25 million m² of land in Shenzhen was identified as potentially suitable.
• The study highlighted that practical usability is constrained by site size, even with large potential areas.

Conclusions:

• The integrated F-AHP and GIS framework offers an improved methodology for C&D waste landfill site selection.
• The findings have significant practical implications for sustainable urban planning and waste management strategies.
• The approach provides a robust model for decision-making in landfill management.