Key Laboratory of Beijing on Regional Air Pollution Control, College of Environmental & Energy Engineering, Beijing University of Technology, Beijing, 100124, China.
Key Laboratory of Beijing on Regional Air Pollution Control, College of Environmental & Energy Engineering, Beijing University of Technology, Beijing, 100124, China.
Chemosphere. 2020 Dec;260:127517. doi: 10.1016/j.chemosphere.2020.127517. Epub 2020 Jul 12.
Rural residential coal combustion (RRCC) for household heating is a potentially important source of air pollution. However, little research has been done on the environmental impacts of RRCC. This study therefore investigated the impacts of RRCC on air pollution based on detailed household heating data obtained from intensive face-to-face interviews in Shandong province, China. The total contributions and specific contributions of coal, stoves, and coal-stove combinations to air pollution were simulated using the WRF-CAMx-PSAT model. The RRCC for heating had a considerable impact on air pollution, contributing 36.1, 9.1, and 16.1% of atmospheric SO, NO, and PM in winter, respectively. Different coal-stove combinations had different impacts on air pollution and mitigation efficiencies. The combination of bituminous coal and advanced coal stoves was the dominant contributor to air pollution, comprising 60.3-68.8% of the total RRCC contribution to different air pollutants. Sensitivity analyses indicated that bituminous coal burnt in a traditional stove had the highest mitigation efficiency (0.67 μg·m/10 kt) for atmospheric PM pollution, 4.1 times higher than that of anthracite briquette coal burnt in advanced coal stoves. Moreover, although RRCC is a near-surface emission source, it contributed considerably to regional pollution. Non-local RRCC emissions accounted for 21.8-74.6, 15.5-72.3, and 35.3-79.9% of the total contribution to SO, NO, and PM in different cities, respectively. The findings of this study improve understanding on the environmental impacts of rural emissions and can provide scientific support for the formulation of effective air pollution mitigation strategies.
农村住宅燃煤（RRCC）用于家庭供暖是一个潜在的重要空气污染源。然而，针对 RRCC 对环境的影响，研究甚少。因此，本研究基于在中国山东省进行的深入面对面访谈获得的详细家庭供暖数据，调查了 RRCC 对空气污染的影响。使用 WRF-CAMx-PSAT 模型模拟了 RRCC 对空气污染的总贡献和煤炭、炉灶和煤炉组合的具体贡献。RRCC 用于供暖对空气污染有相当大的影响，分别占冬季大气 SO、NO 和 PM 的 36.1%、9.1%和 16.1%。不同的煤炉组合对空气污染和缓解效率有不同的影响。烟煤和先进煤炉的组合是空气污染的主要贡献者，占不同空气污染物总 RRCC 贡献的 60.3-68.8%。敏感性分析表明，传统炉灶中燃烧的烟煤对大气 PM 污染的缓解效率最高（0.67μg·m/10kt），比先进煤炉中燃烧的无烟煤块高 4.1 倍。此外，尽管 RRCC 是一个近地表排放源，但它对区域污染有相当大的贡献。非本地 RRCC 排放分别占不同城市 SO、NO 和 PM 总贡献的 21.8-74.6%、15.5-72.3%和 35.3-79.9%。本研究的结果提高了对农村排放环境影响的认识，并可为制定有效的空气污染缓解策略提供科学依据。
