Municipal solid waste recycling and the significance of informal sector in urban China
Municipal solid waste recycling and the significance of informal sector in urban China
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DOI：
10.1177/0734242x14543555
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发表时间：
2014-09-01
影响因子：
3.9
通讯作者：
Salhofer, Stefan
中科院分区：
文献类型：
--
作者：
Linzner, Roland;Salhofer, Stefan
在中国城市，非正规部门积极参与可回收材料的收集、加工和交易。正式的废物管理组织已建立了可回收物源头分类的试验计划，但这一战略仍处于起步阶段。从城市固体废物流中非正式挑选出的可回收物的数量是未知的，因为非正式的废物处理工人不记录他们的活动。本文估计的规模和意义，目前的非正式回收系统的重点是收集可回收物品。大多数经审查的文献发现，官方数据主要显示的是收集和运输的城市固体废物，而关于源头真实的废物产生率的信息较少。基于文献综述的变量，参与收集活动的非正式废物工人的数量，每个非正式收集者每天收集的数量和工作天数，用于估计每年的可回收量，非正式地从城市固体废物中转移。结果表明，在中国城市中，大约有0.56%-0.93%的城市人口或330 - 560万人参与了非正式的垃圾收集和回收活动。这相当于所产生的城市固体废物的估计非正式回收率约为17- 38%。尽管这些评估存在一些不确定性，但可以得出结论，很大一部分可回收物品是由非正规废物处理工人收集和处理的。
The informal sector is active in the collection, processing and trading of recyclable materials in urban China. Formal waste management organisations have established pilot schemes for source separation of recyclables, but this strategy is still in its infancy. The amounts of recyclables informally picked out of the municipal solid waste stream are unknown as informal waste workers do not record their activities. This article estimates the size and significance of the current informal recycling system with a focus on the collection of recyclables. A majority of the reviewed literature detects that official data is displaying mainly municipal solid waste collected and transported', whereas less information is available on real' waste generation rates at the source. Based on a literature review the variables, the number of informal waste workers involved in collection activities', the amounts collected daily per informal collector' and the number of working days' are used to estimate yearly recyclable amounts that are informally diverted from municipal solid waste. The results show an interval of approximately 0.56%-0.93% of the urban population or 3.3-5.6 million people involved in informal waste collection and recycling activities in urban China. This is the equivalent to estimated informal recycling rates of approximately 17-38w/w% of the municipal solid waste generated. Despite some uncertainties in these assessments, it can be concluded that a significant share of recyclables is collected and processed by informal waste workers.