The main purpose of the Sengileevsky reservoir is currently the flow part accumulation of the Nevinnomyssky canal for municipal and industrial water supply of the city of Stavropol, the city of Mikhailovsk, Shpakovsky and Grachevsky districts, the irrigation of the river Egorlyk and the water supply regulation in the Rostov region and the Republic of Kalmykia, provision of water to the Right-Egorlyk Canal, Mezhdurechenskaya Environmental Protection Agency and incidentally, Egorlykskaya and Novotroitskaya Hydroelectric Power Station, Stavropol CPP. From the Sengileev reservoir water is supplied to the city of Stavropol and several other districts of the region, with more than 1 million people being provided with water. Water intake structures with a pumping station on the Sengileev reservoir are unique and have no analogues in Russia. Water is taken by pumps from a depth of 10 meters and then supplied by three pumping stations to a height of about 500 meters. The water quality in the reservoir in different years mainly corresponds to classes II – III, “pure” or “moderately polluted” with a WPI close to 1, whereas in the tributaries for a number of sections the water quality may decline in certain periods to V-VI as “Dirty” and “extremely dirty”. The main idea of the work is to use an environmentally safe technology to combat drainage, pre-purification of water in front of the sewage treatment plant and ensuring uninterrupted water supply in settlements at any time of the year.

In the development of the class of natural-technical systems (NTS) “Natural Environment-Object of Activity-Population” (“NE-OA-P”) on the use of water resources in the multifaceted types of economic and other activities, giving the results of theoretical studies of a specialized type “NTS” in where the component “PS” means the natural water environment (NWE) of a water body as a source of the multi-purpose water supply system (MWS) of the objects of urban households, settlements, enterprises of the fuel and energy complex (TPP, HES, NPP); Under the “OA” water intake technological complex (WITC) is considered, which includes various for the functional purpose of hydraulic structures (HS) and devices for ensuring the selection of estimated water flow (Qm3/s) with an environmentally safe level of protection of the water environment of the water body in the zones of influence of the WITC and the functional work of the treatment facilities in the composition of the MWS; under the component "P is considered MWS that provides water of normative quality to specific water consumers and water users. The methodological basis in creation of new type NTS “NWE - WITC -MWS” considers the system analysis and the approach which is based on concept of “System”. The methodology for creating and developing this type is based on 4 axiomatic conditions: (1) existence as a fundamental characteristic; (2) a multitude of structural formations; (3) unity, as the relationship between natural technogenic components; (4) sufficiency of the initial material for an assessment of an ecological condition of water environment «NWE - WITC -MWS".

No abstract

Results are presented of the comparative analysis of frequency of erythroid cells with micronuclei and “tailed” nuclei and of the interphase nuclei indices of red blood cells in the peripheral blood of bester, a sturgeon hybrid. The differences are found in the frequency of occurrence of abnormal red blood cells between the two groups of fish kept in cages in natural water (river) and in ponds with water supplied through a sedimentation basin. Despite these differences, the number of erythrocytes with chromosomal abnormalities in the bester of both groups is close to normal. However, the number of erythroid cells with micronuclei and “tailed nuclei” prevailed in the fish held in river cages. It was suggested that comparative cytogenetic monitoring of fish can be used not only to characterize the environment of water bodies, but also promote the rational organization of artificial reproduction of aquatic organisms that would contribute to the conservation of biodiversity of aquatic biological resources.