Research On The Impact Of Aircraft Emissions On The Atmospheric Environment Of Aerodrome

Aircraft engine emission is one of the main sources of air pollutants in civil airports,and aircraft emissions have an important impact on the airport and its surrounding atmospheric environmental quality.The research on the atmospheric influence of aircraft emissions in our country has just started,so it has important significance to carry out relevant work which would improve the airport air quality,perfect the content and method of airport environmental impact assessment,and promote the green development of the airport.This paper systematically analyzes the types and generation mechanism of pollutant emissions from aircraft engines.According to the aircraft engine emission standards,the various principle measures for reducing emissions are analyzed and summarized.Based on the analysis of engine emission characteristics and the influencing factors of emission results,the modified calculation model of aircraft emissions is established.With the aid of the model and the special calculation tool,the total amount of the emissions of all aircraft at any time can be estimated in the airport.Through the analysis of movement characteristics and dilution principle of the atmospheric environment,the factors influencing the diffusion of aircraft pollutants under the influence of the atmosphere in the airport is determined,and the point source diffusion model,the line source diffusion model and the annual average diffusion prediction model of the aircraft engine pollutants in the atmosphere of the airport is established.The model can be used to calculate the spatial range of pollutant diffusion and the three-dimensional distribution of pollutant concentration in the predicted period.By adjusting the aircraft type,taxing time,operating period and other factors,the controllable factors would be determined by comparing the results of practical calculation.Aiming at the problem that the atmospheric environmental assessment of the airport at present is mainly in a blank state in our country,this paper establishes the basic process of airport atmospheric evaluation,calculates the aircraft emissions,also determines the evaluation factors and evaluation criteria of the pollutant concentration,and various measures in airport planning and operation were proposed for abating the aircraft pollutants impact.