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UDC 628.113:624.131.41

Fomina V. F.

Water Humus Composition of the Vychegda River at Water Intake Site of the City of Syktyvkar

Summary

The Vychegda river is the main source of water supply for Syktyvkar. The water is characterized by low turbidity and high color, it contains ferrum and has low alkalinity and mineralization. During the autumn-winter period the water delivered to treatment facilities has a temperature of below 1 ºC. The swampiness of the river basin has an essential influence on water humus forming. The composition of humic substances adding the color to water is studied. It is defined, that fulvic acids compose the substantial part of humic substances. Color indices values for the main fractions of humic substances are defined. The influence of a seasonal composition and properties of humic substances and temperature conditions on water coagulation is proved.

Key words

suspended substances , chromaticity , flotation , humus , coagulant , filtration , river water

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