Research On The Method Of Prediction And Evaluation With The Effect Of Aircraft Operation On The Air Quality Of The Aerodrome And Its Surrounding

The emission of aircraft in operation is the main source of air pollution in civil airports,which has an important impact on the airport and its surrounding environment.Our country has just started on the aircraft emissions of air pollutants and its environmental impact,the reseach of aircraft emissions impact on the airport environment prediction,evaluation methods and measures to reduce emissions is important to improve the airport environmental impact assessment and environmental quality,it's also important to promote the airport sustainable development.This paper explains the aircraft emissions of pollutants,the diffusion mechanism,theory and model of particulate emissions.The paper base on the system of pollutant diffusion model and Gauss line source dispersion model,improve the existing theoretical model of the effect of topography,wind and surface roughness calculation method.The study puts forward the measures to reduce the emission of air pollution and analyze the effect of emission reduction.The main measures include: adjustment of aircraft combination,reduction of ground running congestion,optimization of taxi path,adoption of CDA approach procedure and adoption of new alternative aviation fuels.Based on the different pollutants and their emission factors,a list of model selection is proposed to reduce the emission of airport pollutants.It constructs prediction and evaluation method of air pollution on airport which includes prediction of basic information,pollutant emission,pollutant concentration,diffusion calculation and analysis.Taking Guangzhou Baiyun Airport as an application background,the pollutant concentration and the diffusion concentration of the sensitive points around the airport were calculated and analyzed by EDMS computing tool,and the peak hour,daily average and annual average concentration diffusivities of the main pollutants in the airport and surrounding environment were drawn.The effectiveness of the emission reduction measures is verified by the comparison of the area and the annual diffusion concentration of the sensitive point.