Section

Environmental Safety

Title

SCIENTIFIC RATIONALE FOR TECHNOLOGY CONCEPTS OF ENVIRONMENTAL SAFETY

IN WATER BODIES AT URBAN AREAS

Сontributors

V. A. Kurochkina, Ph. D., assistant professor FGBOU VPO “MGSU”, This email address is being protected from spambots. You need JavaScript enabled to view it.,

T. G. Bogomolova, Ph. D., assistant professor FGBOU VPO “MGSU”, This email address is being protected from spambots. You need JavaScript enabled to view it.

Abstract

In the article is considered the impact of urban areas on the quality of water bodies and on sediment processes at urban areas and also the use of a number of technological solutions aimed at improving of ecological state of these water bodies are established. In the article is given results of experimental investigations characterizing change of distribution of grain composition of sediments as a result of entry into an aquatic environment of thin particles from urban areas. As a result of accumulation of fine-grained sediments the specific surface of soil sediments increases, and oxygen consumption by bottom microflora sharply rises up. The results of experimental investigations of oxygen consumption in soil-water system by various parameters as contact area and sediments layer thickness confirms dependence of rate of oxygen consumption from contact area between soil and water. Thus it is established that the speed of oxidation of sediments depends on a ratio between layers thickness of water and sediments. It is also presented that the main oxygen consumption comes in a thin silt film (about 3 % from all thickness of contaminated sediments layer) on surface sediments.

Keywords

self-cleaning of water objects, the urban areas, water bodies, river bed pollution, pollution, contaminated sediments, substance diffusion, ecological state of water bodies, organic deposits, cleaning of river-beds.

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