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Information × Registration Number 0225U000654, (0121U113188) , R & D reports Title Scientific substantiation of ways to minimize the formation of dangerous chlorites and chlorates in drinking water when used in water treatment of chlorine dioxide. popup.stage_title Наукове обґрунтування шляхів мінімізації утворення у питній воді небезпечних хлоритів та хлоратів при використанні водопідготовці діоксиду хлору. Head Prokopov Viacheslav V., Доктор медичних наук Registration Date 15-01-2025 Organization State Institution "OM Marzeev Institute of Public Health of the National Academy of Medical Sciences of Ukraine" popup.description1 Substantiation of optimal technological solutions for the use of chlorine dioxide in the preparation of drinking water on river water mains, which will ensure its reliable disinfection and eliminate the negative impact of chlorites and chlorates on human health. popup.description2  For the first time, a comprehensive hygienic assessment of the use of chlorine dioxide in the traditional two-stage technology for the preparation of drinking water from a surface source is given. The features, levels of formation of dangerous chlorites and the influence of the dose of chlorine dioxide, exposure time, temperature and pH of natural water, and the content of organic compounds in it on this process have been established. With the participation of these factors, from 1.0 mg/dm3 of chlorine dioxide, from 50% to 70% of chlorites and no more than 1.0% of chlorates can be formed. It has been proven that the amount of chlorites formed is the highest in the summer, in accordance with the increasing dose of the oxidant at this time (up to 3,0 mg/dm3) and can exceed the national standard (0,2 mg/dm3) by 2-3 times. The use of aluminum sulfate and ferric chloride in water treatment does not guarantee a reduction in chlorites in drinking water to safe levels (0,2 mg/dm3), but it has never exceeded the WHO standard (0,7 mg/dm3). The prepared drinking water met the requirements of DSanPiN 2.2.4-171-10. For the first time, using the non-carcinogenic risk assessment method, it has been shown that the content of chlorites in drinking water at a level of 032 mg/dm3 and above (0,7 mg/dm3) does not pose a potential threat to human health, which also correlates with the data of the toxicological experiment. The feasibility of replacing the chlorite standard from 0,2 mg/dm3 to 037 mg/dm3 is substantiated and further ways of optimizing dioxide water treatment are proposed. Product Description popup.authors Didyk Nataliia V. Kononenko Tetiana A. Kravchun Tetiana Ye. Kulish Tetiana V. Lypovetska Olena B. Sobol Valentyna A. Sobol Liudmyla A. Tomashevska Liudmyla A. Tsytsyruk Valeriia S. popup.nrat_date 2025-01-15 Close