Assessment of the current state of the don river in the area of village Trekhostrovskaya

Introduction. The problem of water quality in natural reservoirs due to the high intensity of the use of water resources in economic activities is discussed at various levels. The use of water resources for drinking and domestic water supply of the population is an urgent problem at the present time. Determination of a place for the installation of water intakes on large rivers, including the river. Don is a problem due to silting of water intake pipes due to the degradation of water vows.

Object. The object of research is a section of the Don River near the village of Trekhostrovskaya.

Materials and methods. The studies of the bottom topography profile were carried out using a Doppler hydrological profiler Yenisei - 300. Water sampling from the river. Don was carried out in accordance with GOST R 59024-2020. Selection of bottom sediments from the river. Don was produced in accordance with RD 52.24.609-2013. Sample analyzes were carried out in a testing laboratory operating on the basis of the Federal Scientific Center of Agroecology of the Russian Academy of Sciences.

Results and conclusions. In the first section, the most optimal place for installing a water intake is at a distance of 30 meters from the location of the water intake at the time of the study. In the second section, the most optimal location of the water intake is 23 m from the water's edge at the time of the study. The results of the study of water samples indicate that the obtained values do not exceed the maximum permissible concentrations of analytes in water according to SanPiN 1.2.3685-21 and Order of the Ministry of Agriculture of Russia No. 552 dated 12/13/2016. The assessment of the chemical composition of bottom sediments allows us to conclude that they are not a source of secondary pollution of the water body. The samples of bottom sediments were characterized by the presence of chlorides, sulfates, as well as calcium and sodium in small amounts.

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