Abstract
Purpose. Establishment of technical parameters and microbiological efficiency of ultraviolet bactericidal air purification systems based on ultraviolet radiation and ozonation. Methods. Methods of analysis, mathematical modeling, engineering methods of calculation and generally accepted experimental studies of electrical equipment for air purification are used. Results. To ensure the regulatory parameters of air and purification from pathogenic microflora and most types of harmful impurities of chemical and biological origin in industrial, agricultural, medical, educational, public and other premises, an experimental sample of a universal air purification system with the implementation of photooxidation has been developed and manufactured. Experimental studies of technical parameters and microbiological efficiency of the developed system were carried out, the dynamics of ozone concentration in the room under different modes of operation of the ozonator was established and the concentration of the total number of microorganisms, including fungi in the working area of the office space, was reduced. Conclusions 1. It was found that in an office space with a volume of 81 m3, air saturation with ozone to a concentration of 0.3 mg/m3 occurred after 30 minutes in the ozonizer operating mode: operating time 3 s, idle time 10 minutes, average rate of ozone reduction in air within a concentration of 0.007–0.053 mg/m3 is 0.001 mg/min. In case of intervals , reduction and accordingly the deviation of the ozone concentration from the average is reduced. 2. According to the results of microbiological studies, it was found that the total number of aerobic microorganisms in the air, CFU/m3, for 3 hours of operation of the SOP decreased by 91.4%, the total number of fungi – by 88.3%, the total number of microorganisms, including fungi – by 87.1%. Keywords: ultraviolet light, ozonation, photo oxidation, air purification, microclimate.
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