Improving industrial waste treatment processes is associated with solving environmental problems that involve saving consumed environmental resources and reducing the volume of waste disposed of in it. Both are achieved through the introduction of low-waste technologies with the ability to extract valuable components and use purified water in the recycling cycle, among which electro-membrane technologies occupy a worthy place. The paper considers the possibility of using electromembrane separation in the treatment of technological solutions of treatment facilities of RKS-Tambov. In order to study the influence of the parameters of the separation process on the main kinetic characteristics, experimental studies of the specific productivity and retention coefficient of MGA-95 and OPMN-P membranes were carried out during the separation of technological solutions from PO43- phosphate ions. Criteria-based dependences for calculating the specific productivity and retention coefficient in the electromembrane separation of process solutions containing phosphate ions are proposed for use. The calculation of the economic efficiency of the technological scheme of wastewater treatment of RKS-Tambov using an electromembrane apparatus was carried out and its profitability was assessed. The profitability index will be 1.703, that is, more than 1, which is considered a profitable business. High rate and profitability of products. The payback period of the project is 2 years, which should be considered a good indicator, that is, after 2 years, the monetary resources invested in the project will return to economic circulation. The calculated payback period can presumably be reduced, since we have not indexed the price of the concentrate to inflation.

1. Gogina E., Makisha N. Information technologies in view of complex solution of waste water problems. Appl. Mech. Mater. 2014. vol. 587–589. pp. 636–639. doi: 10.4028/www.scientific.net/AMM.587-589.636

2. Sazhiya V.V., Polkovnikov A.B., Seldias I. Problems of ecology and environmental management in the context of economic development of Russia. Advances in chemistry and chemical technology. 2009. no. 12(105). pp. 94–108. Available at: https://elibrary.ru/item.asp? id=20211358 (in Russian).

3. Pavlov D.V. Development of new technologies and equipment for recycling water supply systems of industrial enterprises. Water supply and sewerage. 2011. no. 1–2. pp. 84–89. (in Russian).

4. Paidar M., Fateev V., Bouzek K. Membrane electrolysis – History, current status and perspective. Electrochim. Acta. 2016. vol. 209. pp. 737–756. doi: 10.1016/j.electacta.2016.05.209

5. Yaroslavtsev A.B. Membranes and membrane technologies. 2013. 602 p. (in Russian).

6. Aliano A., Cicero G. AC Electroosmosis: Basics and lab-on-a-chip applications. Encyclopedia of Nanotechnology. 2012. pp. 25–30. doi: 10.1007/978–90–481–9751–4_125

7. Kononenko N.A., Demina O.A., Loza N.V., Dolgopolov S.V. et al. Theoretical and experimental study of the limiting diffusion current in systems with modified perfluorinated sulfonic cation exchange membranes. Electrochemistry. 2021. vol. 57. no. 5. pp. 283–300. doi: 10.31857/S0424857021050066 (in Russian).

8. Yurova P.A., Stenina I.A., Yaroslavtsev A.B. Influence on the transport properties of cation exchange membranes MK 40 modification with perfluorosulfopolymer and cerium oxide. Electrochemistry. 2020. vol. 56. no. 6. pp. 568–573. doi: 10.31857/S0424857020060158 (in Russian).

9. Shaposhnik V.A., Anisimova N.O., Korovkina A.S. Electrical conductivity of multilayer monopolar ion exchange membranes. Sorption and chromatographic processes. 2018. vol. 18. no. 3. pp. 346–351. (in Russian).

10. Eliseeva T.V., Kharina A.Yu., Chernikova E.N., Charushina O.E. Demineralization of heterocyclic amino acid solutions by the electromembrane method. Sorption and chromatographic processes. 2021. vol. 21. no. 4. pp. 492–497. doi: 10.17308/sorpchrom.2021.21/3633 (in Russian).

11. Mavletov M.N., Yarullin A.Z., Berezin N.B., Mezhevich Zh.V. Local treatment of wastewater from galvanic production using a combined method using an electrodialysis unit and ion exchange columns. Bulletin of the Technological University. 2019. vol. 22. no. 6. pp. 63–66. (in Russian).

12. Vasilyeva V.I., Saud A.M., Akberova E.M. Separation of aqueous-salt solutions of phenylalanine by electrodialysis using membranes with different mass fractions of sulfonic cation exchange resin. Sorption and chromatographic processes. 2021. vol. 21. no. 4. pp. 498–509. doi: 10.17308/sorphrom.2021.21/3634 (in Russian).

13. Chigaev I.G., Komarova L.F. Study of nanofiltration and ion exchange as complex methods for purifying natural groundwater. Bulletin of the Technological University. 2019. vol. 22. no. 4. pp. 99–102. (in Russian).

14. Vinnitsky V.A., Chugunov A.S., Ershov M.V. Influence of retentate consumption on membrane separation of binary solutions of sodium, magnesium and calcium chlorides. News of higher educational institutions. Series: Chemistry and chemical technology. 2021. vol. 64. no. 10. pp. 46–55. doi: 10.6060/ivkkt.20216410.6456 (in Russian).

15. Lazarev S.I., Kovalev S.V., Konovalov D.N., Kovaleva O.A. Analysis of the kinetic characteristics of baromembrane and electric baromembrane separation of ammonium nitrate solution. Izv. universities Chemistry and chem. technology. 2020. vol. 63. no. 9. pp. 28–36. doi: 10.6060/ivkkt.20206309.6196 (in Russian).

16. Abonosimov O.A., Kuznetsov M.A., Kovaleva O.A., Polikarpov V.M. et al. Kinetic dependencies and technological efficiency of electrochemical membrane separation of wastewater at treatment plants. Vestnik TSTU. 2017. no. 4. vol. 23. pp. 641–655. doi: 10.17277/vestnik.2017.04.pp.641–655 (in Russian).

17. Abonosimov O.A. Study of hydrodynamic permeability of reverse osmosis membranes in solutions of heavy metal salts. Questions of modern science and practice. University named after IN AND. Vernadsky. 2016. vol. 1. no. 59. pp. 187–191. doi: 10.17277/voprosy.2016.01.pp.187–191 (in Russian).

18. Lazarev S.I., Kovalev S.V., Konovalov D.N., Lua P. Electrochemical and transport characteristics of membrane systems during electron nanofiltration separation of solutions containing ammonium nitrate and potassium sulfate. Electrochemistry. 2021. vol. 57. no. 6. pp. 355–376. doi:10.31857/S0424857021050091 (in Russian).

19. Vladipor: website of JSC STC Vladipor. Available at: www.vladipor.ru/catalog/show (in Russian).

20. Dubyaga V.P., Besfamilny I.B. Nanotechnologies and membranes. Crit. technologies. Membranes. 2005. no. 3. pp. 11–16. doi: 10.1016/0011–9164(91)85060–8 (in Russian).

21. Konovalov D.N., Lazarev S.I., Lua Pepe, Polyansky K.K. Studies of the kinetic and sorption characteristics of OFAM-K and OPMN-P membranes in the process of electron nanofiltration separation of an aqueous solution of potassium sulfate. Proceedings of VSUET. 2023. vol. 85. no. 1. pp. 24–32. (in Russian).

22. Abonosimov O.A., Lazarev S.I., Zarapina I.V., Kotenev S.I. et val. Criteria dependences of the mass transfer process of electric pressure membrane separation of technological solutions from heavy metals. Vestnik TSTU. 2019. vol. 25. no. 3. pp. 442–452. doi: 10.17277/vestnik.2019.03.pp.442–452 (in Russian).

23.