V. Bezsonnyi, R. Ponomarenko, O. Tretyakov, Y. Ivanov, P. Borodych, Т.Lutsenko. Integrated assessment of the environmental state of the Dnipro reservoir. P. 209-227.

 

 

Integrated assessment of the environmental state of the Dnipro reservoir

 

Vitalii Bezsonnyi

Simon Kuznets Kharkiv National University of Economics

http://orcid.org/ 0000-0001-8089-7724

 

Roman Ponomarenko

National University of Civil Defence of Ukraine

http://orcid.org/0000-0002-6300-3108

 

Oleg Tretyakov

Національний авіаційний університет

http://orcid.org/ 0000-0002-0457-9553

 

Yevhen Ivanov

National University of Civil Defence of Ukraine

http://orcid.org/ 0000-0001-6781-9238

 

Pavlo Borodych

National University of Civil Defence of Ukraine

http://orcid.org/ 0000-0001-9933-8498

 

Tetyana Lutsenko

National University of Civil Defence of Ukraine

https://orcid.org/0000-0001-7373-4548

 

DOI: https://doi.org/10.52363/2524-0226-2022-35-16

 

Keywords: ecological safety of surface waters, integrated water quality indicator, complex water quality index

 

Аnnotation

The choice of a priority indicator of surface water quality for an integral assessment of the ecological state of the Dnieper reservoir is substantiated. The procedure for obtaining a combinatorial index of water pollution was used, the long-term dynamics of the main pollutants of the Dnieper reservoir was analyzed. The calculation of the value of the combinatorial index of water pollution and the relative assessment of the ecological state of surface waters were carried out in two stages: first, for each individual test substance and an indicator of the ecological state of surface waters, then the whole complex of pollutants was considered simultaneously and the resulting assessment was derived. This is done to minimize costs and efforts when monitoring surface waters under normal (non-emergency) conditions. As a result of research, it was established that the quality of water downstream has higher values of the combinatorial index of water pollution, due to the significant anthropogenic impact on the water body. A correlation between the complex index of water pollution and the indicator of biochemical oxygen consumption has been established. The priority indicator for the integral assessment of the ecological state of the water body – BSC5 due to the close relationship with the value of the complex index of water pollution is determined. The correlation coefficient between these values ranges from 0,92 to 0,96. The relationship that exists between the value of the combinatorial index of water pollution and the value of biochemical oxygen consumption makes the indicator of biochemical oxygen consumption important for the integral assessment of water pollution by various organic substances. Therefore, as a priority indicator for characterizing the state of the watercourse and conducting operational monitoring, the indicators of oxygen characteristics are selected. This data is useful and important because it will allow for more optimal use of limited resources when monitoring surface waters and improve river basin management.

 

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