Issues of using modern organic reagents in the practice of drinking water supply (literature review)

Abstract

The article contains a literature review devoted to the safe use of modern organic reagents in drinking water supply practice. When conducting a literature search, the following databases were used as follows: Pubmed, Scopus, Web of Science, MedLine, Global Health, RSCI, as well as a search method based on keywords and citations. The purpose of the review is that despite the large number of developed technologies and various reagents, the problem of removing anthropogenic and anthropogenic pollutants from natural water purification cannot be considered to be solved. Water purification technologies are being improved; their effectiveness largely depends on the intensification of reagent treatment. In addition to generally accepted laboratory studies of the reagents used in water treatment, it is necessary to conduct production tests to clarify the parameters of the health risk and toxicity of the transformation products formed during the water treatment process, as well as to study the effectiveness and safety of a set of reagents that together enter the water treatment process. The hygienic assessment of reagents should take into account the actual conditions of their use in drinking water supply practice, including further stages of water treatment. This concerns the assessment of the possible destruction of polymers during the production of composite reagents, the assessment of modifying additives included in their composition, the transformation of polymers in water during chlorination, chloramination, ozonation, under the influence of ultraviolet irradiation, and adjustment of a set of mandatory controlled indicators. To conduct these studies, laboratories must have publicly available analytical methods that allow accurately determining the presence of monomers, polymers, as well as various additives and transformation products in concentrations actually present in drinking water.