Wang Ya-Nan, Zou Chao, Fang Tian-Ge, Sun Nai-Xiu, Liang Xiao-Yu, Wu Lin, Mao Hong-Jun
Tianjin Key Laboratory of Urban Transport Emission Research, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, PR China.
Tianjin Key Laboratory of Urban Transport Emission Research, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, PR China.
Environ Pollut. 2023 Nov 1;336:122472. doi: 10.1016/j.envpol.2023.122472. Epub 2023 Aug 28.
The Beijing Daxing International Airport is a newly opened airport, and a comprehensive emission inventory of air pollution sources has not yet been established. The lack of basic inventory data will cause difficulties in controlling the air quality (AQ) in and around the airport. Based on actual flight data, we established a comprehensive emission inventory (carbon monoxide (CO), nitrogen oxides (NO), hydrocarbons (HC), sulfur dioxide (SO), particulate matter (PM), and carbon dioxide (CO)) at Beijing Daxing International Airport. Furthermore, we evaluated the impact of airport emissions on the AQ of the surrounding areas using the ADMS-Airport model. The results showed that Beijing Daxing International Airport emitted 1.15 E+03, 1.76 E+03, 1.38 E+02, 1.16 E+02, 3.53 E+01, and 3.75 E+05 t of CO, NO, HC, SO, PM, and CO, respectively, from July 1, 2020, to June 30, 2021. Engine exhaust emissions (landing and takeoff [LTO] cycles) dominated all airport pollutant emissions except for PM from the power plant. Among all aircraft types, B738 emitted the most CO, as it accounted for almost half of all the flights. The AQ simulations showed that the air pollutant diffusion range was concentrated within 15 km of the airport and the surrounding areas. The contribution of airport emissions to NO concentrations was most apparent under the most unfavorable meteorological conditions. Based on the average pollutant concentration during the study period, the Gu'an Li Hu Primary School station was the most affected. In particular, NO concentrations at this station were approximately 50% higher in winter than in summer. Currently, the airport's contribution to pollution in the surrounding areas is insignificant. However, with the continuous increase in the number of flights at the airport, its impact on the AQ in the surrounding areas must be addressed in the future.
北京大兴国际机场是一座新启用的机场，目前尚未建立空气污染源综合排放清单。基础清单数据的缺失将给机场及其周边地区的空气质量控制带来困难。基于实际航班数据，我们建立了北京大兴国际机场的综合排放清单（一氧化碳（CO）、氮氧化物（NO）、碳氢化合物（HC）、二氧化硫（SO）、颗粒物（PM）和二氧化碳（CO₂））。此外，我们使用ADMS - Airport模型评估了机场排放对周边地区空气质量的影响。结果表明，2020年7月1日至2021年6月30日期间，北京大兴国际机场分别排放了1.15×10³、1.76×10³、1.38×10²、1.16×10²、3.53×10¹和3.75×10⁵吨的CO、NO、HC、SO、PM和CO₂。除电厂的PM外，发动机尾气排放（着陆和起飞[LTO]循环）在所有机场污染物排放中占主导地位。在所有机型中，B738排放的CO最多，因为其航班数量几乎占所有航班的一半。空气质量模拟结果表明，空气污染物扩散范围集中在机场及其周边15公里以内的区域。在最不利的气象条件下，机场排放对NO浓度的贡献最为明显。根据研究期间的平均污染物浓度，固安李胡小学监测站受影响最大。特别是，该监测站冬季的NO浓度比夏季高出约50%。目前，机场对周边地区污染的贡献微不足道。然而，随着机场航班数量的持续增加，其对周边地区空气质量的影响在未来必须得到解决。
