Dahlén Lisa, Vukicevic Sanita, Meijer Jan-Erik, Lagerkvist Anders
Division of Waste Science and Technology, Luleå University of Technology, SE-97187 Luleå, Sweden.
Waste Manag. 2007;27(10):1298-305. doi: 10.1016/j.wasman.2006.06.016. Epub 2006 Sep 28.
Composition and quantity per person of municipal solid waste (MSW) have been analyzed in six municipalities in southern Sweden with similar socio-economic conditions but with different collection systems. Samples of residual waste have been sorted, classified and weighed in 21 categories during 26 analyses that took place from 1998-2004. Collection data of the total waste flow, including source sorted recycling materials, in the same area have been compiled and compared. Multivariate data analyses have been applied. Weight-based billing reduced delivered amounts of residual household waste by 50%, but it is unknown to what extent improper material paths had developed. With curbside collection more metal, plastic and paper packaging was separated and left to recycling. When separate collection of biodegradables was included in the curbside system, the overall sorting of dry recyclables increased. The large uncertainty associated with waste composition analyses makes it difficult to draw strong conclusions regarding the effects on specific recyclables or the changes in the composition of the residual waste.
瑞典南部六个社会经济条件相似但垃圾收集系统不同的城市，对城市固体废物（MSW）的成分和人均产量进行了分析。在1998年至2004年期间进行的26次分析中，残余垃圾样本被分类为21类并称重。同一地区包括源头分类回收材料在内的总废物流的收集数据已被整理和比较。采用了多变量数据分析。基于重量的计费使家庭残余垃圾的交付量减少了50%，但不清楚不当材料路径发展到了何种程度。通过路边收集，更多的金属、塑料和纸包装被分离出来用于回收。当路边系统中包括可生物降解物的单独收集时，干可回收物的总体分类增加了。与垃圾成分分析相关的巨大不确定性使得难以就对特定可回收物的影响或残余垃圾成分的变化得出有力结论。
