Avaliação da poluição atmosférica veicular com o modelo AERMOD em avenida de Aracaju - SE

• Autor(a) principal: Macêdo, Maíra Feitosa Menezes
• Data de Publicação: 2019
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UFS
• Texto Completo: http://ri.ufs.br/jspui/handle/riufs/12192
• topic: Engenharia ambiental; Ensino de engenharia ambiental; Qualidade do ar; Poluição veicular; Dispersão atmosférica; AERMOD; Aracaju (SE); Air quality; Vehicle pollution; Atmospheric dispersion; AERMOD; ENGENHARIAS::ENGENHARIA SANITARIA::SANEAMENTO AMBIENTAL::QUALIDADE DO AR, DAS AGUAS E DO SOLO

One of the most complex environmental problems to be faced today is the air pollution and automotive vehicles are one of the main sources of pollution of the air in urban areas. Aracaju-SE faces frequent congestion in traffic at peak times and does not have a monitoring network of air quality that subsidizes a diagnosis and control of pollution, so mathematical models that estimate the concentration of pollutants are useful tools for impact assessment receptors.This work consisted of an evaluation of vehicular pollution at Av. Pres. Tancredo Neves in Aracaju-SE through simulations with AERMOD View software, which uses the Gaussian model of atmospheric dispersion AERMOD recommended by the EPA. The modeling was performed for the two Avenue traffic routes, considered as urban linear sources. The rate of emission source was calculated from emission factors, average speed and the number of vehicles accounted for footage circulating on the promenade at peak times. From weather, topographic and sources of emission data yielded distributions of concentrations of total suspended particles, carbon monoxide and nitrogen oxides on the mesh receptors. The dispersion maps showed that the pollutants were concentrated around the sources, due to launch at ground level, the estimated PTS concentrations were within the primary and secondary standards of CONAMA Resolution No. 03/90. The CO concentration values exceeded the standards with maximum peak concentration of 53.199 μg/m3 (average 1 h) and 27.560 μg/m3 (average 8 h) due to the high rate of emission sources. NO2 concentrations also exceeded the primary and secondary standards for hourly averages, attributed to the contribution of heavy vehicles and the emission rates of light vehicles and motorcycles. It has been proven to greater exposure to higher levels of pollution of receptors on the banks of the avenue. It was recommended air quality management measures and further studies of the vehicle source and its effects on health. The simulations showed that the meteorological and topographical conditions of the city of Aracaju favor the atmospheric dispersion of pollutants, that vehicles significantly affect air quality in the region and that the mathematical modeling is a useful tool for the study of atmospheric dispersion.