Based on a comprehensive analysis of electromembrane equipment for the treatment of industrial solutions and wastewater, a new design of an electroionite apparatus has been developed. Optimization of the guide holders makes it possible to eliminate stagnant zones and increase the free space inside the spacer pads, which leads to a significant increase in device performance. The modernization of spacer gaskets improves the cooling efficiency and the quality of the separated solutions, which makes this device promising for use in various industries where highly efficient cleaning, separation and concentration of solutions is required. The introduction of electrobaromembrane and electroionite devices into the production process of kalimagnesia (K2SO4 · MgSO4) at the purification stage is an important step towards modern technologies that solve the main tasks: resource conservation, reduction of chloride content, greening of production. These devices transform linear production into cyclic production, allowing the selective removal of chlorine and the return of potassium and magnesium sulfate concentrate to the crystallizers, and the purified water is reused in the cycle without the use of harmful chemicals. It will take about 9.9 million rubles to launch a new technological scheme for wastewater treatment in the production of granular kalimagnesia. These financial expenses will be spent on the purchase of special equipment and components, as well as on machine maintenance, payment for electricity and its compensation. The installation is designed for 20 years of operation, which makes it possible to assess its reliability and economic efficiency. Financial calculations show that the project will pay off in 2.5 years, which indicates its high profitability.

1. Gao, W. Comprehensive assessment of membrane technology for typical water treatment processes: A critical review / W. Gao, Z. Wang, F. Duan [et al.] // Desalination. – 2025. – Vol. 570.

2. Агеев, Е.П. Мембранные процессы разделения / Е.П. Агеев // Критические технологии. Мембраны. – 2001. – № 9. – С. 42–56.

3. Simdianov, D. Analysis of challenges and problems in the application of electrodeionisation for demineralized water production // Water and Water Purification Technologies. – 2025. – Vol. 1, No. 31.

4. Яковлева, М.Р. и др. Сравнительная оценка процессов электродиализа и электродеионизации // Пищевая промышленность: наука и технологии. – 2023. – Т. 16, № 3. – С. 115–125.

5. Kumar, P.S. Electrodeionization: Fundamentals, Methods and Applications / P.S. Kumar, B.S. Rathi. – Elsevier, 2024. – 350 p.

6. Hu, J. Membrane-free electrodeionization using strong-type resins for high purity water production / J. Hu, Z. Fang, X. Jiang, T. Li, X. Chen // Separation and Purification Technology. – 2015. – Vol. 144. – P. 90–96.

7. Pan, S.Y. Development of a resin wafer electrodeionization process for impaired water desalination with high energy efficiency and productivity // ACS Sustainable Chemistry and Engineering. – 2017. – Vol. 5, No. 4. – P. 2942–2948.

8. Gallagher, C.J. Fundamentals of Electrodeionization (EDI) Technology / C.J. Gallagher // Water Conditioning & Purification International Magazine. – 2007.

9. Пат. 2090251 C1 Российская Федерация, МПК B01D 61/48. Электроионитная установка / Л.Г. Стариковский, А.Д. Рябцев. – № 93041086/26; заявл. 17.08.1993; опубл. 20.09.1997.

10. Jordan, M.L. et al. Promoting water-splitting in Janus bipolar ion-exchange resin wafers for electrodeionization // Molecular Systems Design and Engineering. – 2020. – Vol. 5, No. 5. – P. 922–935.

11. Пат. 2201793 C1 Российская Федерация, МПК B01D 61/48. Электродеионизатор / Э.Н. Компаниец, А.И. Потапов, Л.Г. Стариковский. – № 2001120672/12; заявл. 23.07.2001; опубл. 10.04.2003.

12. Пат. US 2010/0108521 A1 США. Methods and apparatus for electrodeionization / J.D. Gifford, D.E. Dillinger; Ionics Inc. – Заявл. 06.11.2008; опубл. 06.05.2010.

13. Пат. 1172145 A2 ЕПВ, МПК B01J 47/08, B01D 61/48. Способ и устройство для подготовки воды методом электродеионизации / Сато Шин (Sato Shin); патентообладатель – Курита Уотер Индастриз Лтд. (Kurita Water Ind. Ltd.). – № 01306005.8; заявл. 12.07.2001; опубл. 16.01.2002.

14. Alvarado, L. Electrodeionization: principles, strategies and applications / L. Alvarado, A. Chen // Electrochimica Acta. – 2014. – Vol. 132. – P. 583–597.

15. Пат. 2848666 C1 Российская Федерация, MПК B01D 61/48. Электроионитный аппарат / С.И. Лазарев, Д.Н. Коновалов, П.М. Малин; Заявитель и патентообладатель Тамб. гос. техн. ун-т. – № 2025107578; заявл. 28.03.2025; опубл. 21.10.2025.

16. Позин, М.Е. Технология минеральных удобрений: учебник для вузов / М.Е. Позин. – 6е изд., перераб. – Л.: Химия, 1989. – 352 с.

17. Технология калийных удобрений / под ред. В.В. Печковского. – Минск: Высшая школа, 1978. – 304 с.

18. K2 SO4·MgSO4 – Phase Equilibria and Industrial Production // Industrial & Engineering Chemistry Research. – 2000. – Vol. 39, No. 3. – P. 712–718.

19. Волкова, О.И. Экономика предприятия: практикум / под ред. О.И. Волкова, В.Я. Позднякова. – М.: ИНФРА-М, 2005. – 331 с.

20. Чечевицына, И.Н. Экономика предприятия: учебник / под ред. И.Н. Чуева. – М.: Дашков и КО, 2004. – 416 с.

21. Приказ Минфина РФ от 13.10.2003 № 91н (ред. от 24.12.2010, с изм. от 23.01.2020) «Об утверждении Методических указаний по бухгалтерскому учету основных средств» (Зарегистрировано в Минюсте РФ 21.11.2003 № 5252).

22. Клочкова, Е.Н. Экономика предприятия: учебник для вузов / Е.Н. Клочкова, В.И. Кузнецов, Т.Е. Платонова, Е.С. Дарда; под ред. Е.Н. Клочковой. – 3е изд., перераб. и доп. – М.: Юрайт, 2026. – 370 с.