摘要
为科学量化建筑垃圾资源化利用的减碳效益,运用生命周期评价方法,选取直接填埋为基准线,构建原料和废弃物运输、再生骨料生产以及废弃物填埋等阶段的碳排放计算方法,建立碳减排核算框架,并以北京某典型建筑垃圾资源化处置厂为例,测算并分析碳减排实施路径。研究结果表明:案例中每综合利用1亿t建筑垃圾可减少CO_(2)排放量约130.2万t。在建筑垃圾资源化利用生命周期中,减排量受运输距离和资源化率的影响。当运输距离增加到60 km,电力运输车相较于柴油运输车减排量下降速率慢11.7%;当资源化率提高至90%时,电力运输车相较于柴油运输车减排量增加3.39 kgCO_(2)e,采用电力运输车更减排。
To quantitatively assess the carbon reduction benefits of construction waste resource utilization,the life cycle assessment method is applied,with direct landfilling as the baseline,to construct a carbon emission calculation method for stages including raw material and waste transportation,production of recycled aggregates,and waste landfilling.A carbon emission accounting framework is established,and a typical construction waste resource utilization plant in Beijing is taken as an example to calculate and analyze carbon emission reduction pathways.The research results show that comprehensive utilization of 100 million tons of construction waste in the case study can reduce CO_(2)emissions by approximately 1.302 million tons.During the life cycle of construction waste resource utilization,emission reduction is influenced by transportation distance and resource utilization rate.When the transportation distance increases to 60 km,the emission reduction rate of electric transport vehicles is 11.7%slower than that of diesel-powered transport vehicles.When the resource utilization rate is higher than 90%,the emission reduction of electric transport vehicles increases by 3.39 kgCO_(2)e compared to diesel-powered transport vehicles,making electric transport vehicles a more effective emission reduction choice.
作者
江静
李飞
张政
周理安
JIANG Jing;LI Fei;ZHANG Zheng;ZHOU Li'an(Beijing Energy Conservation&Sustainable Urban and Rural Development Provincial and Ministry Co-construction Collaboration Innovation Center,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)
出处
《新型建筑材料》
2023年第11期6-10,43,共6页
New Building Materials
基金
国家重点研发计划课题(2022YFC3803404)
北京节能减排与城乡可持续发展省部共建协同创新中心资助项目。
关键词
再生骨料
生命周期评价
碳排放
运输距离
资源化率
recycled aggregates
life cycle assessment
carbon emissions
transportation distance
resource utilization rate
