The article presents the results of physical rehabilitation of post COVID-19 patients with moderate and severe severity. All sessions with patients were carried out on an outpatient basis in an individual format for 14 days. Taking into account the multisystem nature of COVID-19, the presence of chronic diseases and complications, the recovery period for those who have been ill generally depends on the start of complex rehabilitation measures. Our study has reliably shown that against the background of medical prescriptions, physiotherapy, psychological and social indicators, a complex of training sessions for pulmonary and physical rehabilitation, teaching techniques for improving the structure of the respiratory cycle in those who have been ill provides an improvement in exercise tolerance and psycho-emotional state and quality of life. Against the background of physical rehabilitation, the patients showed an improvement in both clinical parameters and functional state.

Abstract. Currently, the problem of water purification from chemical and microbiological contaminations is very important. Sorption technologies are one of the effective and easy-to-use water purification techniques. To prevent the growth of microbiological contaminations on the surface of investigated sorbents, the surface of the investigated sorbents was treated by aqueous solution of copper sulphate with the further study of bactericidal and bacteriostatic activity. The results of sorption efficiency of original and modified zeolite samples of Kholinsk deposit are presented in this paper. These results were obtained, when Zn 2+ and Pb 2+ ions were removed from the simulated solutions. It was concluded that it is possible to provide natural zeolites with bactericidal and bacteriostatic properties.

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Hematite mineral samples of Korshunov deposit were the subject of the study. The samples size was less than 0.1 mm; 0.5-1 mm and 1.5-2.5 mm. Some physicochemical properties of adsorbent samples were investigated: specific surface and specific pore volume were identified; zeta potential was measured; thermal and elemental analyses were carried out. Sorption properties of samples obtained under static conditions were studied. They were investigated in removing Fe3+ and As3+ ions from simulated solutions. Content analysis of the ions in filtrates was carried out by stripping voltamperometry and photocolorimetry methods. In using hematite, removal of As+3 ions from the solution increases if adsorption time increases. The smaller grain size, the better purification of simulated solution was. Hematite with the size of particles less than 0.1 mm is more effective in removing of Fe+3 ions from solution, if contact time is short. It has been found that if contact time is longer, hematite with 0.5-1 mm and 1.5-2.5 mm sizes of particles is better to use. The authors have concluded that hematite can be used for efficient water purification from iron ions and arsenic ions

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