Information Analytical Calculation and Construction of Dispersion Maps of Pollutants in the Surface Layer of the Atmosphere at a Specialized Facility

Abstract

We carried out an environmental audit on the territory of a specialized facility of all sources of environmental pollution and, accordingly, we measured the concentration of polluting components embodied in the atmospheric background. As a result of the inventory of emission sources, we recorded the following picture for the total emissions of pollutants into the air zone of the facility: 1.647832 t/year, including 1.597435 t/year in the liquid and gaseous state, and 0.050397 t/year in the solid state. We present the calculation of pollution from generators of emissions of the air zone of the facility, which is recorded on the basis of the Unified Atmospheric Pollution Calculation Program (UAPCP) “Ecolog” (version 3.0). According to the feasibility study, the dispersion calculation was recognized as socially effective for site 2 (hangar) - for NO2, NO, kerosene, CO, SO2, and abrasive dust. We calculated the surface concentrations of harmful substances in the atmosphere and constructed dispersion maps for the object for the winter period. The implemented research showed that the accumulation of contaminants does not reach the standard values of concentrations at key points suitable for determination at the boundary of the sanitary protection zone and the residential area. The dispersion calculation indicators showed that the predominant fraction of all diffusing contaminants for the hangar in the sanitary protection zone is NO2 0.82 parts of the maximum permissible concentration with and without background 0.697, and in the residential area, 0.11 parts of MPC without background.

Monitoring Concrete Road Pavement Damages

“…Production of high-quality concrete mix, compliance and control of all processes, (from the receipt of materials at the RMS to the laying of concrete mix in the coating) are just a part of the measures that will make a high-quality and durable coating [17,18,19].…”

Control of Load-Bearing Structures of Technological Overpasses

“…The pillars of the supports are made of rectangular section 400 × 500 mm. Reinforced concrete racks are reinforced with steel clips [27,28,29]. The clips are made of equal angles ∟75 × 6 mm and plates -100 × 6 mm.…”

Models of technogenic pollution by dust and gas components at protection facilities

“…Technological procedures for reducing the number of dust and gas structures are as follows: unassembled rock is undermined in the presence of a retaining partition with a thickness of at least 20-30 m; this technique has a large-scale application at mining and processing facilities, as the most versatile, economical, not requiring complex equipment techniques [16, 17 and 18]. It is desirable to emphasize that the volume fraction of dangerous toxic components is concentrated in the pieces of ore broken off from the layers [18,19]. To eliminate this specificity of the technological process of the mining industry, it is rational to use slaughters of microcrystalline components and hydrogel, which occur during the interaction of 6-8% solution Na2SiO3 and 3.5-4.5 % NH4NO3 in the mine workings.…”