随着城市化进程的不断推进,城市固体废物(MSW)转运站,这是垃圾收集和运输的关键点,比以前搬到了住宅区。在评估对工人的健康威胁和环境风险时,应全面评估气相新兴污染物的排放特征。在这项研究中,分析了上海四个城市生活垃圾中转站屋顶通风口和垃圾接收大厅不同季节空气中微塑料颗粒(>50μm)的排放特性。空气中的微塑料颗粒的平均浓度为2.5±1.3n/m3。四个废物转运站的空气传播微塑料的粒径主要在100μm至500μm的范围内。微塑料主要以薄膜和纤维的形式出现。主要的微塑料类型是人造丝,占总量的69.4%。对于单个转运站,微塑料颗粒排放到环境中的速率估计为41,297至82,593n/h。与垃圾接待大厅相比,屋顶通风口空气中的微塑料颗粒浓度下降了25%,这表明气味处理设施有效地降低了微塑料颗粒的浓度。
With the continuous progress of urbanization, municipal solid waste (MSW) transfer stations, which are key points for garbage collection and transportation, have moved to residential areas than before. The emission characteristics of gas-phase emerging contaminants should be comprehensively assessed in the assessment of health threats to workers and environmental risks. In this study, the emission characteristics of airborne microplastic particles (>50 μm) were analyzed on the roof vent and waste reception hall of four MSW transfer stations in Shanghai during different seasons. The average concentration of airborne microplastic particles was 2.5 ± 1.3 n/m3. The particle sizes of airborne microplastics at the four waste transfer stations were mainly in the range of 100 μm to 500 μm. Microplastics mainly occur as films and fibers. The dominant microplastic type was Rayon, which accounted for 69.4% of the total amount. The rate of microplastic particles emission into the environment for a single transfer station was estimated to be in the range of 41,297 to 82,593 n/h. Compared with the waste reception hall, the concentration of airborne microplastic particles in the roof vent decreased by 25%, which indicated that the odor treatment facility effectively reduces the concentration of microplastic particles.