EPIDEMIOLOGICAL ASSESSMENT OF THE WATER QUALITY STATE OF THE KREMENCHUH RESERVOIR IN 2021
DOI:
https://doi.org/10.11603/1681-2786.2022.2.13303Keywords:
water bloom, blue-green algae (BDA), reservoir, pollutantsAbstract
Purpose: to study the state of water quality of the Kremenchug Reservoir. To establish the causes of the development of blue-green algae further BDA (hereinafter, cyanobacteria) and to develop directions for improving the reservoir. To study the possible influence of blue-green algae on the microbiological and sanitary-chemical indicators of water and the state of human health.
Materials and Methods. Laboratory-instrumental methods of researching the quality of water in the Kremenchuk Reservoir according to sanitary-hygienic (temperature, color, dissolved oxygen, BOD, (biological oxygen demand) permanganate, dichromate oxidation, etc.) and microbiological indicators (lactose-positive E. coli index - LKP). Statistical, epidemiological, bibliographic, observational, analytical research methods were also used.
Results. Monitoring studies have established that reservoir water within Cherkasy region is subject to a weak and moderate degree of pollution. (II and III degrees). In places of mass development of blue-green algae and where they accumulate (“blooming” spots) in open parts of the reservoir and in surge zones (bays and coasts), the water belongs to the IV-V degrees of surface water quality
The “blooming” of water in the reservoir is an integral result of a sharp restructuring of the hydrological and hydrochemical regime of the reservoir, its intensifying anthropogenic eutrophication, an example of extremely high biological productivity of reservoirs according to one to three types of BDA, which have exclusively adaptive features.
Conclusion. Preventing the dangerous “blooming” of water is the introduction of integrated management of water resources, increased control over discharges of untreated wastewater into reservoirs, transfer of the solution to waste problems to the “beginning of the pipe”, a significant reduction of the phosphorus load on the reservoir, which involves, first of all, a reduction in the use of detergents , which contain phosphorus.
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