Shallow zones and their role in the ecosystem of the Sheksna Reach of the Rybinsk Reservoir

Based on the materials of monitoring of bottom sediments and a special voyage of the RV Akademik Topchiev in 2016-2018 in the Sheksna Reach of the Rybinsk Reservoir which is a recipient of semi-purified waste waters from chemical and metallurgical enterprises of the city of Cherepovets, the role of...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2019-08, Vol.321 (1), p.12038
Main Authors: Zakonnov, V V, Chuiko, G M, Zakonnova, A V, Tsvetkov, A I
Format: Article
Language:English
Subjects:
Biological activity
Bottom sediments
Deep water
Dilution
Domestic wastewater
Environmental monitoring
Horizontal transfer
Industrial wastewater
Littoral environments
Littoral zone
Metal industry wastewaters
Metallurgy
Pollutant deposition
Pollutants
Reservoirs
Runoff
Sediment pollution
Sediments
Self-purification
Wastewater purification
Water pollution
Water quality
Wind effects
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Summary:Based on the materials of monitoring of bottom sediments and a special voyage of the RV Akademik Topchiev in 2016-2018 in the Sheksna Reach of the Rybinsk Reservoir which is a recipient of semi-purified waste waters from chemical and metallurgical enterprises of the city of Cherepovets, the role of the littoral zone in dilution of pollutants in water and their accumulation in bottom sediments in the profundal zone of the flooded channel of the Sheksna River to the settlement of Gayutino has been estimated. The results indicate that runoff and wind-induced currents promote intensive horizontal transfer and dilution of sewages in a shallow zone, and hydrodynamic conditions in a deep-water zone promote vertical sedimentation and irretrievable deposition of pollutants in bottom sediments at depths of more than 6 m. Chemical and biological processes leading to self-purification of industrial and domestic wastewaters and contributing to the maintenance of optimal water quality take place along with the physical processes.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/321/1/012038