Study of disinfectant type effect on the organohalogen compounds formation in water treatment

Abstract

In practice of water supply, mainly, chlorine gas is used in the preparation of drinking water supply system, which is toxic, combustible and explosive. In this regard, the urgent problem is the replacement of gaseous chlorine with a safer disinfectant, which provides at least equivalent results at all stages of water treatment. We have studied the possibility and effectiveness of using technical sodium hypochlorite. Contents of organic substances in river water and the concentration of organohalogen compounds in drinking water, regardless of the season (25% on average) with the use of sodium hypochlorite as a disinfectant were established in this research work. It was shown that periodically during 6 months of the year (March-August) the concentration of chloroform and trichlorethylene exceeded MPC normalized values of these substances in drinking water, which necessitated the development of a technology for water purification from organohalogen compounds.