Evaluación de la calidad del aire del cantón Riobamba para el año 2019 aplicando modelos computacionales

Abstract

The current graduation work evaluated the air quality of Riobamba county using computational models; For this, it was necessary to evaluate the meteorological behavior of the study area with information provided by Quimiag, Tunshi, San Juan and Alao meteorological stations of Escuela Superior Politécnica de Chimborazo. The significant pollutant emission sources of the county were identified and divided into three types of sources, the emissions from mobile sources were estimated by using the International Vehicular Emmisions (IVE) software, the emissions from fixed sources such as Porlón landfill, ECUACERÁMICA and the area including emissions generated by the consumption of liquefied petroleum gas, gas stations and limestone extraction were calculated based on the use of emission factors established by the American Environmental Protection Agency (EPA), within the emissions from area sources, the emissions from biogenic sources were calculated using the Guenther methodology. Based on the results obtained, the emissions were compared with those resulting from other studies carried out in cities with similar characteristics. The temperature and average radiation values during the study year were 12.24 degrees Celsius and 357.35 W / m2 respectively, the emission from mobile sources reaches 356 387.56 tons per year, which represents 48.52%, the Area sources emit 250 167.85 tons per year, which represents 34.96%, and fixed sources emit 127.948.6 tons per year, which represents 17.42% of total emissions. With the results presented in Riobamba county, it is concluded that mobile sources are those with the highest emission rate, followed by the area and fixed sources. It is recommended to carry out a permanent monitoring of these sources in order to know the levels of air pollution present in the county.