INFLUENCE OF WATER PARAMETERS OF SURFACE WATER SUPPLY SOURCES ON REAGENT WATER TREATMENT

Abstract

Impurities that cause turbidity and color in natural waters, as well as dispersed and colloidal particles, can be removed from water only by reagent treatment with coagulants. This article discusses the processes of coagulation of impurities in natural waters. An analysis of water quality indicators (turbidity, color, permanganate oxidation, phytoplankton biomass) from a surface water supply source, clarified water with added aluminum-containing coagulants by stages of purification, and purified water by periods of the year was carried out. Depending on the quality indicators of surface water entering the water treatment plant, it is recommended to use a constant supply of coagulant or periodic supply (fractional) in the cold season, which makes it possible to significantly reduce the need for coagulant and increase the duration of filter cycles when operating rapid filters.