SCIENTIFIC TECHNOLOGIES OF MONITORING THE STATE OF BOTTOM SEDIMENTS, AS AN INDICATOR OF THE LEVEL OF ENVIRONMENTAL DANGER TO HYDROECOSYSTEMS

The work proposes a method of monitoring the condition of surface water bodies on the territory, which was subject to the influence of enterprises of the aviation industry, by studying the contamination of bottom de-posits. Using the example of petroleum hydrocarbons - specific pollutants of aviation enterprises, it is proved that bottom sediments are an integral indicator of the level of man-made pollution, an indicator of the level of ecological safety of hydroecosystems. The calculated coefficients of bottom accumulation indicate progres-sive water pollution and accumulation of the main mass of pollutants in bottom sediments. The results of the research of the small river flowing along the airline show that the bottom sediments belong to the category of "extremely polluted" and on the one hand, they contribute to the process of self-purification of the water envi-ronment by accumulating oil products, but on the other hand, they represent a danger of secondary pollution of the water column, after which, when physical and chemical conditions change, pollutants from bottom sediments are able to move into the water phase.