居民生活垃圾低值可回收物分类及处理处置的碳减排潜力研究

家庭垃圾分类，可回收物、厨余垃圾、有害垃圾和干垃圾分开处理 #生活技巧# #节省生活成本# #低碳生活# #家庭废物处理#

Fei LI, Zhilong YE. Carbon emission reduction potential of low-value recyclables classification and treatment in municipal solid waste[J]. Journal of Environmental Engineering Technology. DOI: 10.12153/j.issn.1674-991X.20240693

Citation: Fei LI, Zhilong YE. Carbon emission reduction potential of low-value recyclables classification and treatment in municipal solid waste[J]. Journal of Environmental Engineering Technology. DOI: 10.12153/j.issn.1674-991X.20240693

居民生活垃圾低值可回收物分类及处理处置的碳减排潜力研究

李菲1, 2,  叶志隆2, 3,  1.

福州大学

2.

中国科学院城市环境研究所

3.

福建省国土空间分析与模拟数字技术重点实验室

计量 文章访问数:  0 HTML全文浏览量:  0 PDF下载量:  0 出版历程 收稿日期:  2024-10-24 修回日期:  2024-12-19 录用日期:  2025-02-16 网络出版日期:  2025-04-22

摘要

摘要: 居民生活垃圾分类与处理处置是城市重要的温室气体排放源之一。生活垃圾低值可回收物（Low-value recyclables，LVR）分类有助于实现垃圾减量化及资源利用最大化，对建设环境友好型和资源节约型社会具有重要意义。本研究以厦门市生活垃圾LVR分类试点社区为案例，基于IPCC清单指南，分析生活垃圾低值可可回收物的组成、碳排放特征及碳减排潜力。研究结果表明：①由于经济水平不同，各社区LVR组成差异显著，废塑料占比最高（52.62%～58.40%），其次为废纸（16.42%～19.29%）、废玻璃（8.80%～11.58%），剩余为废瓷类、废纺织品及杂质；②依据LVR分出率设置不同场景，净碳排放量(以CO2-eq/tLVR计)从场景一（焚烧+填埋）的 645.86 kgCO2-eq/t降至场景四（回收30%LVR）-374.24 kgCO2-eq/t；③不确定分析显示，焚烧发电效率提高8%和回收产品替代降低20%，场景四净碳排放量分别减少了239.15 kgCO2-eq/t和增加了172.56 kgCO2-eq/t；④当厦门市其他垃圾年焚烧量161.37万t时，从其他垃圾回收30%的LVR可减少92.7万t的碳排放。

Abstract: The classification and management of municipal solid waste (MSW) from residential areas is a significant source of urban greenhouse gas (GHG) emissions. The sorting of low-value recyclables (LVR) in MSW contributes to the achievement of waste reduction and the maximum utilization of resource, playing a critical role in the development of an environmentally friendly and resource-efficient society. This study took the pilot community of LVR classification in Xiamen as a case study, analyzing the composition, carbon emission characteristics, and carbon reduction potential of residential waste low-value recyclables based on the IPCC inventory guidelines. The results of the study indicated that: ① Diverse economic levels resulted in significant differences of LVR composition between communities, where plastic waste comprises the highest proportion (52.62%～58.40%), followed by paper (16.42%～19.29%) and glass (8.80%～11.58%), with the remainder being ceramics, textiles, and impurities.②In accordance with different scenarios that were based on LVR sorting rates, net carbon emissions (measured in CO2-eq per ton of LVR) decreased from 645.86 kgCO2-eq/t to -374.24 kgCO2-eq/t as the scenario changed from scenario one (incineration + landfill) to scenario four (30% LVR recycling).③Uncertainty analysis shows that an 8% increase in incineration energy efficiency and a 20% reduction in product substitution from recycling led to a reduction of 239.15 kgCO2-eq/t and an increase of 172.56 kgCO2-eq/t, respectively, in scenario four.④When the residual waste incineration amount reaches 1,613,700 tons,  30% LVR recycling from residual waste is able to cause 927,000 tons of carbon  emission reduction .

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计量 文章访问数:  0 HTML全文浏览量:  0 PDF下载量:  0 出版历程 收稿日期:  2024-10-24 修回日期:  2024-12-19 录用日期:  2025-02-16 网络出版日期:  2025-04-22

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