Purpose. To develop a technological scheme for purifying wastewater from pollutants of anthropogenic origin.
Specifications. It has been established that TiO2-based nanocomposites are characterized by high photocatalytic activity towards dyes, phenol and antibiotics (up to 100% recovery). The specific surface area of the nanocomposites was determined, which is significantly larger (152-223 m2/g) than for pure TiO2 (132 m2/g) and is 3-5 times higher than the specific surface area of the commercial photocatalyst TiO2 P25. Photocatalytic, sorption and disinfection properties were determined based on the results of the destruction of organic pollutants, which are typical for medical and pharmaceutical wastes. It has been shown that all synthesized samples of nanocomposites are mesoporated, which is desirable for their use as photocatalysts/sorbents (selective layers of ceramic membranes/sensitive layers of gas sensors) for the manufacture of devices based on them for disinfection and wastewater treatment.
Application area. Chemical, pharmaceutical.
Advantages. The main advantages of this technology are that photocatalytic, sorption and disinfection properties are determined based on the results of the destruction of organic pollutants inherent in medical and pharmaceutical wastes. It has been shown that all synthesized samples of nanocomposites are mesoporated, which is desirable for their use as photocatalysts/sorbents (selective layers of ceramic membranes/sensitive layers of gas sensors) for the manufacture of devices based on them for disinfection and wastewater treatment. Compared to existing technologies, nanomaterials are used not only to purify the aquatic environment, but also to monitor the air environment.
Technical and economic effect. The tests carried out at FLUID MANAGEMENT SYSTEMS LLC of the washing waters of the pharmaceutical production of UMEDO GROUP LLC indicate the prospects of using synthesized photocatalytic materials and a significant reduction in the CSC value after the photocatalytic process, which was reduced to regulatory requirements (rules for receiving wastewater from subscribers) in Kyiv), which allows the treated wastewater to be discharged into the sewer system.
Description. A comprehensive technological scheme for conditioning wastewater with the participation of metal oxide photocatalysts is proposed. A universal design of a panel photoreactor has been developed, which is capable of providing highly efficient destruction of pollutants of various origins in wastewater of various origins. A 3D modeling of the developed photoreactor design was carried out, which made it possible to visualize all the structural elements of such atypical special equipment. Ceramic membranes have been created that have demonstrated significant inhibitory ability against gram-negative Escherichia coli E. coli and the fungus Candida albicans, which increases with increasing concentration of argentum. Tests carried out on rinsing waters of pharmaceutical production indicate the prospects of using synthesized photocatalytic materials and a significant reduction in the CSC value after the photocatalytic process, which was reduced to regulatory requirements, which allows the purified wastewater to be discharged into the sewer system.