Some aspects of conditioning high-color river waters of the Far North

Summary

Some aspects of water conditioning of the Solza River at the water treatment plant in Severodvinsk are considered with an analysis of the quality of natural water for the period 2020–2023. The results of statistical processing of initial data on the river water quality are presented. The features of the chemical treatment of river water containing a high concentration of organic substances, and with the composition varying in dependence to the season, are considered. Based on statistical processing of the data for the 2020–2024 period in terms of color and permanganate index, the range of the color coefficient variation was determined. In the course of studies, the optimal pH range was established to provide for the minimum concentrations of residual aluminum in purified water.

Key words

chromaticity , iron , residual aluminium , permanganate oxidizability , humic and fulvic acids , colloidal admixtures , organic contaminants , color coefficient , coagulation purification

A review of the current research and advanced methods of highly colored natural water purification

Summary

In northern regions the management of water resources characterized by high color and significant natural organic matter content, represents one of the greatest challenges for modern water treatment systems. The traditional purification methods are often insufficiently effective for such water, spurring the active search and development of new, superior technologies. Over the past decade and a half, the research has shifted toward combined, hybrid solutions that not only provide for the high levels of purification but also meet the economic feasibility and environmental safety requirements. The review systematizes the current research and methods for highly colored natural water purification being studied and applied in Russia and overseas.

Key words

chromaticity , ultrafiltration , oxidation , ferrates , humic and fulvic acids , coagulation purification , total and dissolved organic carbon