装饰和拆除废物的回收过程是粒子阶段新出现的担忧的一个被忽视的来源:PAHs作为一个例子
Nana Zang1, Pinjing He2, Hua Zhang2
1Institute of Waste Treatment & Reclamation, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
Environment international
|March 28, 2025
概括
回收建筑和拆除废物会在颗粒物中释放多环芳 (PAHs). 本研究量化了这些排放产生的职业风险,突出了特定的污染物和颗粒大小,以进行有针对性的控制.
科学领域:
- 环境科学 环境科学
- 职业健康 职业健康 职业健康
- 废物管理 废物管理
背景情况:
- 装饰和拆除废物 (DDW) 的回收对于循环经济至关重要.
- DDW回收可以在颗粒物阶段释放新出现的污染物.
- 多环芳 (PAH) 是代表性的令人担忧的污染物.
研究的目的:
- 在DDW回收过程中调查PAHs的排放特性.
- 评估与各种颗粒物大小的PAHs相关的职业风险.
- 确定优先的PAH和其他致癌微污染物.
主要方法:
- 在DDW回收过程中从灰尘收集器收集的颗粒样本 (PM2.5,PM10,TSP和灰尘).
- 分析了PAH的组成和量化的度.
- 使用非目标查来识别其他微污染物.
- 计算的职业风险和转换的毒性.
主要成果:
- 在所有样本中检测到多个PAHs (Acy, Chr, BaA, Fla, Pyr, Phe).
- PM2.5和75-100微米的尘埃呈现出最高的职业风险.
- 烯 (Chr) 和[a] (BaA) 呈现出高转化毒性.
- 确定异和作为其他致癌微污染物.
- 估计DDW回收的全球PAH排放量为193.44 ± 241.80公斤/年.
结论:
- DDW回收是一个重要的,经常被忽视的,粒子阶段PAHs的来源.
- 特定的PAH和颗粒大小带来了相当大的职业健康风险.
- 建议有针对性的控制策略,重点关注Chr,BaA和PM2.5.
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