Features vozniknovenijaizagrjaznenija air and its elimination
Harmful emissions, getting to environment, are exposed to neutralisation and first of all dispersion. Thus all atmosphere participates in dispersion of emissions, and they as though collect in its ground layers. Concentration of pollution of atmospheric air depends on many reasons and first of all from that, how many they have arrived in air, i.e. From emission size. The more concentration of pollution is more thrown out in air of substances polluting it, the. Polluting substances arrive in air in the form of a smoke or gas. The further they are carried away from an emission place, the more diluted also concentration of pollution in air decreases. Degree of air pollution by a smoke also decreases with increase in height of its emission. The above a pipe from which the smoke is thrown out, the less its concentration in surrounding atmosphere. It is connected by that at emission from a high pipe there is more intensive hashing of a smoke to air.
Air pollution depends and on processes of its self-cleaning. It first of all is connected with process sedimentatsii, or subsidence of the weighed dust particles on soil. Besides, being in air, gases are exposed to neutralisation. The big role in reduction of pollution of atmosphere is played by green plantings and an atmospheric precipitation. Green plantings detain dust particles and some gases on the surface, for example oksidy are grey (IV), carbon (II), and an atmospheric precipitation as though washes away them from air.
Air pollution is connected as well with its physical factors. So, concentration of pollution of atmosphere depends on a direction and speed of a wind. The greatest concentration of polluting substance is found out in that direction in which prevailing winds blow. This law has great value at the decision of a question on interposition of the industrial enterprises and a city residential zone. Between speed of a wind and concentration of pollution of atmosphere there is an inverse relationship: the speed of air less, the initial concentration of pollution longer remains.
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