UDC 628.164/.165
DOI 10.35776/VST.2025.12.02

Tcherkesov A. Yu., Shchukin S. A., Kaberskaia Dar’ia, Kniazeva Natal’ia, Zaichko Dmitrii, Shepelev Oleg

Results of studying chemical treatment of the nanofiltration unit concentrate

Summary

The results of industrial studies on chemical treatment of concentrate from a single-stage four-cascade nanofiltration unit are presented. The change in the cation-anion composition of the concentrate as a result of treatment with chemicals, including antiscalant. The studies of the chemical treatment of the fourth cascade nanofiltration concentrate by the lime-soda method conducted under industrial conditions showed the possibility of its effective application in principle. It has been experimentally confirmed that the introduction of an antiscalant upstream the nanofiltration units has a positive effect on the subsequent chemical treatment of the concentrate by the lime-soda method.

Key words

softening , desalination , domestic water supply , four-cascade nanofiltration unit , baromembrane separation of liquid

For citation: Cherkesov A. Iu., Shchukin S. A., Kaberskaia D. V., Kniazeva N. I., Zaichko D. A., Shepelev O. S. Results of studying chemical treatment of the nanofiltration unit concentrate. Vodosnabzhenie i Sanitarnaia Tekhnika, 2025, no. 12, pp. 11–16. DOI: 10.35776/VST.2025.12.02. (In Russian).

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REFERENCES

1. Van der Bruggen B., Vandecasteele C. Removal of pollutants from surface water and groundwater by nanofiltration: overview of possible applications in the drinking water industry. Environmental Pollution, 2003, v. 122 (3), pp. 435–445. DOI: 10.1016/S0269-7491(02)00308-1.
2. Hilal N., Al-Zoubi H., Darwish N. A. et al. A comprehensive review of nanofiltration membranes: Treatment, pretreatment, modelling, and atomic force microscopy. Desalination, 2004, v. 170 (3), pp. 281–308. DOI: 10.1016/j.desal.2004.01.007.
3. Первов А. Г., Андрианов А. П., Спицов Д. В., Ефремов Р. В. Утилизация концентратов установок обратного осмоса с удалением из них ионов кальция и магния // Водоснабжение и санитарная техника. 2017. № 6. С. 10–20. EDNYREHIJ.
   Pervov A. G., Andrianov A. P., Spitsov D. V., Efremov R. V. [Utilization of reverse osmosis concentrate with removing from it calcium and magnesium ions]. Vodosnabzhenie i Sanitarnaia Tekhnika, 2017, no. 6, pp. 10–20. EDNYREHIJ. (In Russian).
4. Первов А. Г. Новая технология утилизации концентрата обратноосмотических установок // Вода Magazine. 2017. № 1 (113). С. 40–45.
   Pervov A. G. [Advanced technology of reverse osmosis concentrate utilization]. Voda Magazine, 2017, no. 1 (113), pp. 40–45. (In Russian).
5. Первов А. Г. Утилизация концентратов установок обратного осмоса путем удаления из них карбоната кальция и гид­роокиси магния / Сборник докладов VIII Научно-практической конференции «Современные технологии водоподготовки и защиты оборудования от коррозии и накипеобразования». Москва, 16–17 сентября 2019 г. – М.: Ассоциация «Росхимреактив», 2019. С. 24–26.
   Pervov A. G. [Utilization of reverse osmosis concentrate by removing calcium carbonate and magnesium hydroxide]. Book of reports of Modern Technologies for Water Treatment and Protection of Equipment from Corrosion and Scale Formation VIII Scientific-Practical Conference. Moscow, 16–17 September 2019. Moscow, Roskhimreaktiv Publ., 2019, pp. 24–26. (In Russian).
6. Черкесов А. Ю., Щукин С. А., Каберская Д. В. и др. Анализ сезонного изменения общей жесткости и минерализации источников водоснабжения города Таганрог: Материалы XV Международной научно-практической конференции «Технологии очистки воды» – «ТЕХНОВОД–2024». Кисловодск, 23–26 апреля 2024 г. – Новочеркасск: ООО «Лик», 2024. С. 201–208.
   Cherkesov A. Iu., Shchukin S. A., Kaberskaia D. V. et al. [Analysis of seasonal fluctuations of the total hardness and mineralization of water supply sources in the city of Taganrog]. Proceedings of the XV International Scientific-Practical Conference «TEKHNOVOD–2024 Water Treatment Technologies». Kislovodsk, 23–26 April 2024. Novocharkassk, Lik LLC, 2024, pp. ­201–208. (In Russian).