纽约市生活垃圾成分调查方法与成分分析

Investigation method and composition analysis of municipal solid waste in New York City

纽约市卫生部自1990年以来共开展5次垃圾成分研究,2017年在5个行政区的住宅、学校进行样本采集,春夏秋3个季节共采集样本810份,采用加权平均法和置信区间对数据进行计算分析。2017年纽约市住宅街边可回收物(纸类、金属、玻璃、塑料)物理组成为33.6%,厨余垃圾为28.8%,建筑垃圾为4.5%。与北京市对比发现,两市住宅生活垃圾中主要成分均为厨余垃圾和可回收物,厨余垃圾比例相差显著,纽约市厨余垃圾物理组成比北京市低28个百分点。两市的可回收物和建筑垃圾物理组成略有差别。

The New York City Department of Sanitation has conducted 5 waste characterization studies.In 2017,810 samples has been collected in 5 boroughs over 3 seasons:spring,summer and fall,the weighted average method and confidence interval were used to calculate and analyze the data,the composition of residential waste was achieved:curbside recyclables 33.6%,food scraps and food-soiled paper 28.8%,construction and demolition debris 4.5%.In compare with Beijing,the main composition of residential waste in both cities are food scraps and recyclables,however,the relative share of food scraps(food-soiled paper)differs significantly,that in New York City is 28 percentage points lower than in Beijing.The relative share of recyclables and construction&demolition debris in both cities differ slightly.