№82-24

Justification of the construction of recreation reservoirs as a means of preserving and restoration of ecosystem services

О. Nazarenko¹,  https://orcid.org/0000-0002-2738-9891

А. Berezovska¹, https://orcid.org/0000-0002-2738-9891

Ye. Buyakova¹,  https://orcid.org/0000-0002-6600-4733

A. Bashkirov¹,   https://orcid.org/0000-0005-5952-9608

Ye. Sherstiuk²   https://orcid.org/0000-0002-1844-1985

¹National University Zaporizhzhia Polytechnic, Zaporizhzhia, Ukraine

² Dnipro University of Technology, Ukraine

Coll.res.pap.nat.min.univ. 2025, 82:288-295

Full text (PDF)

https://doi.org/10.33271/crpnmu/82.288

ABSTRACT

Purpose. The study is a feasibility analysis of recreational reservoir constructions to provide ecosystem services, increase their efficiency, and long-term sustainability.

Methods. The study is based on the processing of data from long-term observations on climatic and hydrological indicators of river basins in the southern regions of Ukraine. Bathymetric sensors installed in channels to monitor water level, precipitation and changes in water balance were used to collect data, soil moisture sensors to measure moisture at different depths, with three-time control of critical summer temperatures, which allowed obtaining data on the distribution of moisture in the soil during drought.

Findings. A mathematical model of sedimentation was defined and productivity rise of cavitation sedimentation from 14 to 7.6 hours for various technogenic mixtures was obtained, a methodology for increasing the concentration of bottom sediments depending on the friction coefficient from 0.0025 to 0.125 was proposed, and the optimal length of the reservoir for maximizing sediments was identified. The possibility of saving more than 1,350,000 m³/year of reclaimed water and about 250,000 kg of sludge/year per metallurgical region is confirmed.

The originality. Second- and third-order mathematical models to describe sedimentation processes in recreational reservoirs were proposed. The influence of salt mixing on sedimentation processes in techno park conditions was investigated for the first time. Dependences between length of salt intrusion and geometric parameters of the reservoir were determined. Optimal geometric parameters of reservoirs to ensure maximum efficiency of pollution sedimentation were proposed. New algorithms for sedimentation modeling considering impact of geometric and physicochemical parameters of the reservoir were developed. Dependence between the bottom erosion characteristics of the reservoirs and their ability to accumulate sediments under different operating conditions was determined.

Practical implementation. the results of the study allow to implement modern methods of water resources management in techno parks, reducing the man-made load on the environment. The proposed recommendations on the geometric parameters of water bodies can be used for the design of new or reconstruction of existing recreational water bodies, the proposed approaches contribute to a significant reduction in the concentration of pollutants in water, improving its quality and creating conditions for biodiversity restoration.

Keywords: water resources, sedimentation of sediment, geometric parameters of water bodies, man-made load.

References

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