生活源固体废物处理减碳路径分析——以成都市为例

张婧怡; 李金惠; 张妮妮; 刘丽丽

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中国环境科学 ›› 2025, Vol. 45 ›› Issue (12) : 6954-6962.

碳排放控制

生活源固体废物处理减碳路径分析——以成都市为例

张婧怡, 李金惠, 张妮妮, 刘丽丽

作者信息 +

Carbon reduction pathways for municipal solid waste management: A case study of Chengdu

ZHANG Jing-yi, LI Jin-hui, ZHANG Ni-ni, LIU Li-li

Author information +

文章历史 +

摘要

本研究基于成都市生活源固废处理现状,模拟量化不同策略下的碳减排潜力,提出协同减碳的路径优化机制.当前成都市固废处理面临前端分类效能低、源头减量缺位,中端资(能)源化利用率不足,后端高能耗工艺推高系统碳排放的问题.研究设置八大情景模拟不同策略协同减碳效果:资源化率提升(S4)在短期内减排效果最显著,源头减量(S2)具备长期“滚雪球”效应,综合路径(S7)在多数固废类型中表现最优,验证“全链条协同治理”的系统优势.不同策略在不同时期主导减排:短期(2020~2027年),“全量焚烧”策略降低碳排放量从4169ktCO₂-eq降至1314.7ktCO₂-eq,贡献同期95.4%的减排量;中期(2028~2035年)源头减量策略持续发力,实现碳排放稳步下降;长期(2035年后)通过优化焚烧工艺、污泥协同处理和高值化资源利用,实现深度脱碳和碳汇增效.此外,研究还识别了不同固废类型的策略敏感性差异,提出分类精准施策的城市固废低碳转型路径建议.

Abstract

This study evaluates the carbon mitigation potential of municipal solid waste (MSW) management strategies in Chengdu by integrating multi-scenario simulations with a refined classification-based accounting framework. The existing system faces compounded challenges, including inadequate source separation, limited source reduction, low resource recovery rates, and a high-emission treatment structure dominated by landfilling and energy-intensive technologies. The results demonstrate that different strategies prevail at distinct stages of the transition. In the short term (2020~2027), a full-incineration strategy reduces net emissions from 4169 to 1314.7kt CO₂-eq, accounting for 95.4% of cumulative reductions. In the midterm (2028~2035), source reduction increasingly alleviates downstream treatment pressure. In the long term (post-2035), system optimization—through improved incineration performance and sludge co-treatment—enhances synergies and carbon sink effects. Among individual strategies, enhanced resource utilization (S4) yields the most immediate mitigation effect, whereas source reduction (S2) generates substantial long-term cumulative benefits. The integrated strategy (S7) outperforms all single-strategy options across most waste categories, underscoring the need for full-chain, coordinated governance. Overall, the findings highlight the importance of differentiated, time-phased, and waste-type-specific policy interventions to enable a low-carbon transition in urban MSW systems.

导出引用

张婧怡, 李金惠, 张妮妮, 刘丽丽. 生活源固体废物处理减碳路径分析——以成都市为例[J]. 中国环境科学. 2025, 45(12): 6954-6962

ZHANG Jing-yi, LI Jin-hui, ZHANG Ni-ni, LIU Li-li. Carbon reduction pathways for municipal solid waste management: A case study of Chengdu[J]. China Environmental Science. 2025, 45(12): 6954-6962

中图分类号： X703.5

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