Advanced treatment of drinking water from chlorine by-products in water transport and stationary facilities

Abstract

Chlorination is a priority method for drinking water disinfection, since chlorine has strong bactericidal properties. However, a whole set of volatile chlorine derivatives of organic substances dangerous to humans are formed during chlorination, among which it is necessary to mention chloroform, carbon tetrachloride, chlorophenols. To reduce the concentration of organochlorine derivatives, it is necessary to supplement the current water treatment technology with an adsorption stage of advanced treatment at local sorption treatment facilities immediately before water is supplied to the consumer. It is advisable to design a third water treatment stage at water treatment stations, the capacity of which is low, since a huge number of filters will be needed for high-capacity plants, which may significantly reduce the water head when supplied to the city’s water supply networks, and this will entail huge costs associated with the construction of a workshop for the third treatment stage and the cost of the filters themselves. It makes sense to use such sorption plants in cottage estates and water transport. Besides, chlorination remains in the drinking water treatment scheme, which preserves the quality of water during transportation over long distances, and organochlorine substances, including 2-chlorophenol, are removed during sorption.