An incentive-based source separation model for sustainable municipal solid waste management in China

Area of Science:

• Environmental Science
• Urban Planning
• Waste Management

Background:

• Municipal solid waste (MSW) management is a critical challenge for large urban areas.
• Effective waste management systems require source separation and recycling by residents.

Purpose of the Study:

• To design and test an incentive-based source separation model for municipal solid waste (MSW).
• To evaluate the efficiency and economic impact of the incentive model compared to traditional methods.

Main Methods:

• Implementation of an incentive-based model in 76 households in Guiyang, China.
• Model incorporated rewards for organic waste sorting, government funding for waste reduction, and support for small recycling enterprises.
• Stakeholder analysis (SA) to assess interests and abilities regarding the new recycling system.

Main Results:

• Achieved an 87.3% waste reduction rate after one year of operation.
• Increased comprehensive net benefit by 18.3 CNY/tonne compared to the normal model.
• Identified stakeholder dynamics: centralized MSW disposal enterprises showed minimal interest, while small recycling enterprises were interested but lacked capacity.

Conclusions:

• The incentive-based source separation model is effective in reducing waste and increasing economic benefits in urban settings.
• Stakeholder engagement and capacity building are crucial for the successful promotion of such models.
• Strategies for promoting the incentive-based model require careful consideration of stakeholder interests and abilities.