DSNY Waste Characterization 2017 – Subsort Results

The Department conducted the 2017 NYC Residential, School, and NYCHA (NYC Housing Authority) Waste Characterization Study over three seasons: spring, summer, and fall. This study builds on decades of research and analysis into the evolving composition of NYC's waste stream. The study team hand sorted samples into 70 main sort categories. Sub-sorting of an additional 172 categories was conducted to get a more detailed understanding of the wide variety of plastic products in the waste stream, as well as a sub-set of Paper products. Results are presented in absolute terms as the quantity by weight of each material type. The quantity of each material is calculated by applying the percent composition to the total quantity of DSNY collections for fiscal year 2017 (July 2016-June 2017).

该部门于2017年对纽约市（NYC）的住宅、学校和纽约市房屋管理局（NYCHA）的废弃物进行了历时三个季节：春、夏、秋的组成特征研究。本研究在数十年的研究和分析基础上，进一步探讨了纽约市废弃物流的演变构成。研究团队对样本进行了手工分类，共分为70个主要类别。为了更深入地理解废弃物流中各种塑料产品的广泛多样性，以及对部分纸质产品的子分类，又进行了172个附加类别的子分类。结果以绝对量呈现，即每种材料类型的重量量值。每种材料的数量是通过将百分比组成应用于2017财年（2016年7月至2017年6月）DSNY（纽约市环境卫生局）收集的总数量来计算的。