生活垃圾分类对固体废弃物和温室气体协同减排的影响研究--以浙江省为例

Research on the impact of domestic waste classification on synergistic emission reduction of solid waste and greenhouse gases:a case study of Zhejiang Province

通过垃圾分类解决垃圾处理问题、促进资源循环利用已成为普遍共识,生活垃圾分类对垃圾处理过程温室气体减排的协同作用日益凸显。废弃物处理是浙江省温室气体排放尚未达峰的领域之一,因此废弃物处理领域特别是生活垃圾处理领域的温室气体减排,对浙江省温室气体排放全面达峰至关重要。本研究基于生活垃圾处理过程温室气体排放核算方法,设定到2022年浙江省未全面推进生活垃圾分类和全面推进生活垃圾分类两个情景,预测和比较两种情景下生活垃圾产生量、分类回收量及处理过程产生的温室气体排放量。结果显示,通过推进生活垃圾分类,生活垃圾处理过程温室气体排放量减少24%,且焚烧处理过程减排效果更明显,可促成生活垃圾处理温室气体排放的提前达峰。基于上述结论,本研究最后针对生活垃圾分类工作及末端处理方式提出了三点建议。

It has become a common consensus to solve the problem of domestic waste treatment and promote resource recycling through domestic waste classification.The synergy effect of domestic waste classification on greenhouse gas emission reduction in waste treatment process is increasingly prominent.Waste treatment is one of the areas where greenhouse gas emissions in Zhejiang Province have not yet reached peak.Therefore,greenhouse gas emission reduction in the field of waste treatment,especially in the field of domestic waste treatment,is essential for the peak of greenhouse gas emissions in Zhejiang Province.The article is based on the greenhouse gas emission accounting method for domestic waste treatment process,and set up two scenarios in 2022,one is domestic waste classification has not comprehensively promoted,one is domestic waste classification has comprehensively promoted.Then the article predicts and compares the domestic waste output,the amount of classified waste,and the greenhouse gas emissions generated by the treatment process.The results show that by promoting the classification of domestic waste,the greenhouse gas emissions from domestic waste treatment process are reduced by 24%,and the emission reduction effect of incineration treatment process is more obvious,which can lead to the advance peak of greenhouse gas emissions from domestic waste treatment.Based on the above conclusions,the article concludes with three suggestions for the classification and treatment of domestic waste.