Wang Chuanda, Duan Wenjiao, Cheng Shuiyuan, Jiang Kai
Key Laboratory of Beijing on Regional Air Pollution Control, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China.
Key Laboratory of Beijing on Regional Air Pollution Control, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China.
Sci Total Environ. 2024 Jan 1;906:167416. doi: 10.1016/j.scitotenv.2023.167416. Epub 2023 Sep 27.
Non-road construction equipment (NRCE) is an important source of air pollution, and it is crucial to fully understand the impact of NRCE on atmospheric PM and O pollution. However, systematic assessment of the impact of NRCE emissions on the atmosphere is lacking, especially with the latest implementation of the Stage IV Standard, and current research progress is insufficient for the development of effective control measures. This study estimated NRCE emission inventories at different emission standard stages and their impact on the atmosphere, using the "2 + 26" cities as the case study area. The results showed that the total NRCE emissions of CO, NO, VOC, and PM were 387, 418, 82, and 24 kt in 2015 and 319, 262, 62, and 15 kt in 2020 and are predicted to be 270, 226, 48, and 10 kt in 2025, respectively. Simulation results showed that the contributions of NRCE to NO, NO, PM, and O were 16.7 %, 18.9 %, 7.7 %, and 8.2 % in 2015 to 13.6 %, 18.4 %, 6.5 %, and 6.7 % in 2020, respectively. In both 2015 and 2020, NRCE emissions in southern cities showed greater impacts on the average concentrations in the "2 + 26" cities than those in northern cities. The contributions of local NRCE emissions to local PM and O concentrations in the 28 cities ranged from 30 %-59 % and 13 %-39 %, respectively. The O sensitivity estimated by the HDDM illustrated that nonlinear characteristics highlighted the importance of coordinated control of NO and VOC and can inspire development of post-processing technology and electricity substitution. The belt-like area connecting Zhengzhou to Beijing showed higher exposure concentrations of PM and O, and the concentration exposure in urban areas was much higher than that in the rural and other areas. The environmental impact assessment of NRCE emissions can provide guidance for its management and development.
非道路施工设备（NRCE）是空气污染的一个重要来源，全面了解NRCE对大气中颗粒物（PM）和臭氧（O）污染的影响至关重要。然而，目前缺乏对NRCE排放对大气影响的系统评估，尤其是在最新实施的第四阶段标准的情况下，当前的研究进展不足以制定有效的控制措施。本研究以“2+26”城市为案例研究区域，估算了不同排放标准阶段的NRCE排放清单及其对大气的影响。结果表明，2015年NRCE的一氧化碳（CO）、氮氧化物（NO）、挥发性有机物（VOC）和颗粒物（PM）总排放量分别为387、418、82和24千吨，2020年分别为319、262、62和15千吨，预计2025年将分别为270、226、48和10千吨。模拟结果表明，2015年NRCE对NO、NO、PM和O的贡献分别为16.7%、18.9%、7.7%和8.2%，2020年分别为13.6%、18.4%、6.5%和6.7%。在2015年和2020年，南部城市的NRCE排放对“2+26”城市的平均浓度的影响均大于北部城市。28个城市中本地NRCE排放对本地PM和O浓度的贡献分别在30%-59%和13%-39%之间。通过HDDM估算的O敏感性表明，非线性特征突出了NO和VOC协同控制的重要性，并可为后处理技术和电力替代的发展提供启示。连接郑州和北京的带状区域显示出较高的PM和O暴露浓度，城市地区的浓度暴露远高于农村和其他地区。NRCE排放的环境影响评估可为其管理和发展提供指导。
