CALCULATION OF CONCENTRATIONS OF HARMFUL SUBSTANCES IN THE LOWER ATMOSPHERE USING THE THEORY OF VENTILATION JETS

Subject: currently, determination of concentration of harmful substances in the emissions of enterprises, regardless of the height of the emission source and characteristics of technological process, according to the current normative document OND-86, is based on the idea of layered structure of the atmosphere. Application of the model of thermal stratification of the atmosphere with respect to ventilation sources of emission of harmful substances leads to an unjustified increase in the value of maximum concentrations. Research objectives: determine possibility of using other methods to calculate concentrations of harmful substances from low sources of air pollution. Materials and methods: possibility of using the theory of ventilation jets for calculating concentrations of harmful substances in the atmosphere is considered. Results: it is certain that the current approach to calculating emissions is incorrect for low sources of air pollution, which include a significant amount of ventilation and technological emissions of harmful substances. Conclusions: the necessity of using the theory of ventilation jets in calculating concentrations of harmful substances from low sources of atmospheric pollution is justified. Dependence is obtained that for the first time makes it possible to determine concentration of harmful substances in the air for sources of atmospheric pollution no higher than 30-40 m.