The Ministry of Environment, South Korea, is involved in efforts to reduce safety-related accidents that could occur during hazardous waste disposal and minimise the environmental impacts of waste disposal. To reach such goals, new factors have been added that contribute to the hazardous characteristics of hazardous waste. The Ministry is also expanding regulations on inorganic and organic components present in hazardous waste for these factors and continues to correct the classification system to establish standards for waste components. Metallic dust, for example, is mostly generated during the operation of melting furnaces or precipitators and dangerous materials contained in this dust may cause accidents, such as explosions or fires. South Korean accident cases have confirmed that waste containing hazardous materials, such as Mg, Al and Mg–Al alloys, can cause such events. Therefore, this study analysed 28 dust samples collected from the dust accumulated in precipitators in 28 metal manufacturing facilities in South Korea. Nine samples were flammable and four samples were reactive to water. Two samples also exhibited leaching toxicities. The results applied to relevant laws in South Korea showed that the proportion of waste containing hazardous characteristics increased from 7.14% in the previous management category to 39.29% in the extended category, an overall increase of 32.15 percentage points.

韩国环境部致力于减少危险废物处置过程中可能发生的安全相关事故，并尽量减少废物处置对环境的影响。为了实现这些目标，增加了有助于危险废物危险特性的新因素。该部还针对这些因素扩大了对危险废物中存在的无机和有机成分的规定，并继续修正分类系统以建立废物成分标准。例如，金属粉尘主要是在熔炉或除尘器的运行过程中产生的，这些粉尘中含有的危险物质可能会导致爆炸或火灾等事故。韩国事故案例证实，含有危险物质的废物，如镁，Al 和 Mg-Al 合金会导致此类事件。因此，本研究分析了从韩国 28 家金属制造设施的除尘器中积聚的灰尘中收集的 28 份灰尘样本。九个样品是易燃的，四个样品对水起反应。两个样品也表现出浸出毒性。应用于韩国相关法律的结果显示，含有危险特性的废物比例从之前的管理类别的7.14%上升到扩展类别的39.29%，整体提高了32.15个百分点。两个样品也表现出浸出毒性。应用于韩国相关法律的结果显示，含有危险特性的废物比例从之前的管理类别的7.14%上升到扩展类别的39.29%，整体提高了32.15个百分点。两个样品也表现出浸出毒性。应用于韩国相关法律的结果显示，含有危险特性的废物比例从之前的管理类别的7.14%上升到扩展类别的39.29%，整体提高了32.15个百分点。