摘要
近年来我国海绵城市建设过程中生物滞留设施得到广泛应用,但关于其全生命周期碳排放尚缺乏系统研究。以嘉兴市海绵城市建设中某建筑小区传统生物滞留设施为研究对象,构建了涵盖材料生产、运输、施工及运行维护全生命周期的碳排放核算框架,并基于《2006年IPCC国家温室气体清单指南》(2019年修订版)的碳排放因子法,量化评估了该小区内现状生物滞留设施运行寿命为30年的碳足迹。核算结果表明:在建设阶段,材料生产、材料运输、施工过程碳排放量分别为18699.81、10129.95和789.89 kg(以CO_(2)计,下同);在运行阶段,生物滞留设施通过排放温室气体产生的碳排放量为63100.42 kg/a,由于其对雨水径流总量、污染物削减作用及植物固碳作用,生物滞留设施碳汇量为82706.63 kg/a;全生命周期内生物滞留设施净碳排放因子为−3.43 kg/(m^(2)·a)。从填料选择方面考虑,相同运行条件下沸石填料生物滞留设施在全生命周期内净碳排放因子较小,为−4.53 kg/(m^(2)·a);从生物滞留设施构造方面考虑,倒置生物滞留设施在全生命周期内净碳排放因子较小,为−3.76 kg/(m^(2)·a)。进一步提出了通过选择低碳材料、优化植物和填料配置、改进生物滞留结构的生物滞留设施碳减排策略。
Bioretention facilities are widely used in the construction of sponge cities in China,but there is a knowledge gap on their whole life cycle carbon emissions.Taking the biological retention facilities in a building community in the sponge city construction of Jiaxing City as the research object,a carbon emission accounting framework covering the whole life cycle of material production,transportation,construction and operation and maintenance was constructed.Based on the carbon emission factor method of 2019 Refinement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories,the carbon footprint of the bioretention facilities with an operating life of 30 years was quantitatively evaluated.The results showed that the carbon emissions from the materials production,materials transportation and the construction process during the construction phase are 18699.81,10129.95,789.89 kg(in terms of CO_(2),the same below),respectively.During the operation stage,the carbon emission from greenhouse gases emitted by bioretention facilities is 63100.42 kg/a.Due to the carbon sequestration of plants and the reduction of the total rainwater runoff and pollutants,the carbon sink of bioretention facilities is 82706.63 kg/a.The net carbon emission factor of bioretention facilities in the whole life cycle is−3.43 kg/(m^(2)·a).From the perspective of filler selection,the net carbon emission factor of zeolite filler bioretention in the whole life cycle is less,which is−4.53 kg/(m^(2)·a).Considering the structure of bioretention facilities,the net carbon emission factor of inverted bioretention facilities is less,which is−3.76 kg/(m^(2)·a)during the whole life cycle.Carbon reduction for bioretention facilities can be obtained by using low-carbon materials,optimizing plant and filler,and improving the bioretention structure.
作者
王建龙
苏笑冰
王雪婷
秦昊辰
WANG Jianlong;SU Xiaobing;WANG Xueting;QIN Haochen(Key Laboratory of Urban Stormwater System and Water Environment,Ministry of Education,Beijing University of Civil Engineering and Architecture;Beijing Energy Conservation&Sustainable Urban and Rural Development Provincial and Ministry Co-construction Collaboration Innovation Center,Beijing University of Civil Engineering and Architecture;Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control,Beijing University of Civil Engineering and Architecture;North China Municipal Engineering Design and Research Institute Co.,Ltd.)
出处
《环境工程技术学报》
北大核心
2025年第4期1119-1126,共8页
Journal of Environmental Engineering Technology
基金
北京市自然科学基金项目(8232022):北京市属高等学校高水平科研创新团队建设支持计划项目(BPHR20220108)。
关键词
海绵城市
生物滞留设施
碳排放核算
生命周期评价
碳减排
sponge city
bioretention facilities
carbon emissions accounting
life cycle assessment
carbon emission reduction
