世界银行-尼日利亚拉各斯可持续生活垃圾管理的障碍和解决方案（英）-2025_15页_2mb

Summary of Barriers and Solutions for Sustainable Household Waste Management in Lagos, Nigeria

Core Content

This document presents a comprehensive analysis of the barriers to sustainable household waste management in Lagos, Nigeria, and proposes behaviorally-informed solutions to address these challenges. It highlights the environmental, health, and economic consequences of poor waste management practices, particularly in the context of Lagos being a major contributor to plastic pollution globally.

Lagos generates over 13,500 metric tons of waste per day, much of which ends up in waterways and the ocean, contributing to flooding and environmental degradation. The study, based on a mixed-methods approach, includes both qualitative and quantitative data collected from residents of Lagos, focusing on the psychological, cultural, and social factors influencing waste management behaviors.

Main Points

Barriers to Sustainable Waste Management

1. Consumption Preferences: Many residents prefer plastic due to its convenience and availability.
2. Convenience and Salience of Plastic: Plastic is often more accessible and used without much thought.
3. Lack of Knowledge and Experience: There is limited awareness about how to manage waste sustainably.
4. Forgetfulness and Time Constraints: People often forget to sort and dispose of waste properly.
5. Mental Dissociation: Some residents do not associate plastic with environmental harm.
6. Low Responsibility Towards Community: There is a lack of collective responsibility for waste management.
7. Habituation to Unsustainable Practices: Long-standing habits make it difficult to shift to sustainable behaviors.
8. Littering and Burning as Social Norms: These practices are widely accepted in some communities.

Key Challenges for the Poorest Households

• Lower access to waste collection services.
• Less satisfaction with existing services.
• Limited use of bins and reliance on plastic bags.
• Lower rates of waste sorting and recycling.
• Less knowledge about recyclable materials.

Proposed Solutions

1. Generate Mass Awareness through Simple, Timely, and Targeted Messaging

• Use positive framing and the 'fresh start' effect to engage people emotionally.
• Deliver sorting messages at the time of disposal to increase relevance.
• Examples: Informational stickers on bins, text message feedback.

2. Reduce Hassles of Sustainable Choices by Improving Accessibility

• Provide recycling bins in high-traffic areas and improve access to sustainable products.
• Offer convenient alternatives like drinkable water stations to reduce plastic use.

3. Alter Choice Architecture for More Sustainable Consumption

• Change default options from plastic to fabric bags.
• Encourage businesses to offer sustainable packaging and products.
• Example: Schools providing reusable containers instead of plastic.

4. Create Role Models to Influence New Social Norms

• Elevate active waste sorters to community leaders.
• Use influential figures like politicians, religious leaders, and community associations to spread awareness.
• Implement contests and public rankings to foster community accountability.

5. Use Nudges and Reminders for Waste Disposal

• Leverage existing communication channels to send reminders about waste collection.
• Example: App-based alerts and utility bill notifications.

6. Incentivize Communities Using Innovation and Gamification

• Use apps and rewards to make recycling more engaging.
• Examples: ZeLoop's blockchain-based recycling system, Wecyclers' SMS-based incentive program.

7. Tap into Reciprocity and Empathy to Engage the Community

• Foster positive interactions between waste pickers and households.
• Demonstrate government actions to inspire reciprocal behavior.
• Example: Face-to-face engagement with sorting coaches in France.

Key Recommendations

• Awareness Campaigns: Focus on health, cleanliness, and the environmental impact of waste.
• Infrastructure Improvements: Provide bins, recycling facilities, and access to sustainable products.
• Behavioral Interventions: Use social norms, reminders, and gamification to change habits.
• Policy and Enforcement: Encourage businesses to adopt sustainable practices and support enforcement of plastic bans.
• Community Engagement: Leverage local leaders and role models to promote sustainable behaviors.

Methodology

The study used a mixed-methods approach, including:

• Qualitative Data: Focus group discussions, in-depth interviews, key-informant interviews, and non-intrusive observations.
• Quantitative Data: A household survey conducted across 10 local government areas (LGAs) in Lagos, involving 1,100 households.

The survey was administered in English and Yoruba, with enumerators trained for two days and ethical clearances obtained. Data was analyzed using descriptive statistics.

Conclusion

Sustainable household waste management in Lagos requires a combination of behavioral science insights and structural improvements. By addressing both the psychological and infrastructural barriers, policymakers and stakeholders can develop more effective and inclusive strategies to improve waste management practices and reduce environmental harm.

Table 1: Behavioral Barriers and Proposed Levers