Abstract
Aiming at studying the emission characteristics of VOCs in air pollutants in chemical enterprises, and further exploring the law of atmospheric pollution diffusion and occupational exposure health risk assessment, a chemical enterprise was selected for pollution monitoring, and for organized and unorganized pollution sources, samples were collected and analysed. The prediction results of diffusion concentration of pollutants of chemical plants in the atmosphere showed: butanol organized discharge, on the condition that the atmospheric stability is B level, wind speed is 1.5m/s, has the maximum landing concentration. The landing point is located in 300m under the wind in the discharge source, its affecting value is 0.0125mg/m3, 3.8% of butanol environmental quality standard (0.33mg/m3), having no significant impact on the environment. The maximum effect of fugitive emission of butyraldehyde and butanol recently factory bound atmospheric environment were 0.0451mg/m3 and 0.0393mg/m3, respectively. And they are 56.4% and 11.9% of their environmental standard value (aldehyde 0.08mg/m3 and butanol 0.33mg/m3), still having no significant impact on the atmospheric environment. At last, it is concluded that the impact of chemical pollutants on the atmospheric environment is not significant that it is controllable.
