水泥窑共处置低品质包装废物的生命周期评价

Life Cycle Assessment of Co-Processing Poor Quality Packagingin a Cement Kiln

以低品质包装废物为典型固体废物开展水泥窑共处置试烧试验.以生命周期评价(LCA)方法为研究手段,对水泥窑共处置技术的环境影响进行评价,并且与常规水泥熟料生产过程进行比较.通过试验和资料调研,获得所有生命周期阶段的能量和物质输入、输出以及环境外排数据,利用SimaPro7.1软件进行处理,得出相应的环境影响潜值.结果表明:①在水泥熟料生产的全生命周期过程中,对环境影响所占比重最大的是生产阶段,共处置低品质包装废物可以使环境影响潜值降低10.65%(从263Pt降至235 Pt),主要表现在无机物对人体的损害和酸化富营养化方面.②从全生命周期来看,共处置低品质包装废物使环境影响潜值降低了8.68%(从334 Pt降至305 Pt),主要表现在无机物对人体的损害和酸化富营养化方面的降低,二者的环境影响潜值分别降低了11.00%和15.70%.

The environmental impacts of co-processing technology in a cement kiln wereevaluated by investigating the life cycle of co-processing poor quality packagingin a cement kiln.Life cycle assessment（LCA） was used for analysis in the study,and the result was compared with those obtained during normal production.Data on mass,energy flux and environmental emissions duringall stages of the life cycle were obtained from experiments and the literature,and the corresponding environmental impact values were analyzedusing the software SimaPro7.1.The results showed： 1） Over the entire life cycle of cement production,the environmental impact was the greatest during the production period.During this period,the environmental impact value could be reducedby 10.65%（from 263 Pt to 235 Pt） by co-processing poor quality packaging waste;the change was mainly fromthe reduction ofdamage from inorganic substances and acidification/eutrophication.2） Over the entirelife cycle,the environmental impact value could be reduced by 8.68%（from 334 Pt to 305 Pt）by co-processing poor quality packaging waste.This reductionwas mainly due tothe loweringof damage to human health and the level of acidification/eutrophication,whose environmental impact values were decreased by 11.00% and 15.70%,respectively.