Environmental Impact Assessment Caused by Emissions from the State Enterprise ‘Kolky Forestry’

Abstract

Purpose. Estimation of the impact of State Enterprise ‘Kolky Forestry’ pollutants emissions on atmospheric air. Methods. Environmental chemical analysis, instrumental analysis, computational method, generalization and systematization methods, comparativeanalytical, descriptive and cartographic methods. Results. The sources of pollutant emissions of State Enterprise ‘Kolky Forestry’ were examined. During the equipment operation, the following substances are emitted into the atmospheric air: iron oxide, manganese and its compounds, nitrogen oxides (in terms of dioxide), carbon monoxide, sulfur dioxide, substances in the form of chemically undifferentiated suspended solids, hydrogen sulfide, benzene, hydrocarbons, xylene, toluene, sodium hydroxide, greenhouse gases (methane, carbon dioxide, dinitrogen oxide, NMVOCs). The assessment of pollutants emissions impact on the state of air pollution is carried out according to the results of the estimated dispersion of pollutants in the air and data obtained via instrumental research methods. The concentration of pollutants in the atmospheric surface layer at the borderline of the 100 m sanitary bufferis as follows: nitrogen oxides (in terms of dioxide) – 0.18 MPC, suspended solids – 0.55 MPC, sodium hydroxide (lye, caustic soda) – 0.10 MPC. Conclusions. The estimationof pollutants concentrationon the basis of actual and estimated emission rates revealed that harmful substances concentration in the atmospheric surface layer does not exceed the maximum permissible concentration and does not have a negative effect on human health and the state of the environment at the borderline of the sanitary buffer.