Chemical Composition of Surface Drainage and River Waters Coming from the Area of the Petrozavodsk City to the Onego Lake
https://doi.org/10.31857/S0869607122040073
Abstract
The results of seasonal studies of chemical composition of water coming from the residential area of Petrozavodsk to the Petrozavodsk Bay of the Onego Lake are presented. From the residential area of the city, 21.1 thousand tons of mineral salts per year, 8.3 tons of organic matter per year (in terms of COD), and 657.4 tons of nutrients per year enter the Petrozavodsk Bay with storm and drainage waters. With the runoff of the rivers Lososinka and Neglinka 10.1 thousand tons of mineral salts per year, 678.2 tons of nutrients (P, N, Si, Fe) per year enter the bay. In summer, compared with spring, the decrease in the concentration of sodium and chlorine in surface wastewater is observed in 70% of the samples, the increase in the concentration of sulfates is observed in 80% of samples. In winter, compared with autumn, an increase in the concentration of sodium and chlorine in surface wastewater is observed in 40% of the samples, and the content of sulfates decreases in 85% of the samples. Considering that the Petrozavodsk Bay serves as a source of centralized drinking water supply and an object of recreational and fishing activities, it is necessary to organize systems for treating surface wastewater.
About the Authors
A. V. Sabylina
Northern Water Problems Institute, Karelian Research Centre, Russian Academy of Sciences
Russian Federation
Russian Federation
Petrozavodsk
T. A. Efremova
Northern Water Problems Institute, Karelian Research Centre, Russian Academy of Sciences
Russian Federation
Russian Federation
Petrozavodsk
O. I. Ikko
Northern Water Problems Institute, Karelian Research Centre, Russian Academy of Sciences
Russian Federation
Russian Federation
Petrozavodsk
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Review
For citations:
Sabylina A.V., Efremova T.A., Ikko O.I. Chemical Composition of Surface Drainage and River Waters Coming from the Area of the Petrozavodsk City to the Onego Lake. Proceedings of the Russian Geographical Society. 2022;154(4):39-53. (In Russ.) https://doi.org/10.31857/S0869607122040073
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