Bactericidal efficiency of a portable UV-vipromine bath system based on leds for non-contaminated water
DOI:
https://doi.org/10.32402/dovkil2026.01.063Keywords:
UV radiation, E. coli, LED lights, portable systemAbstract
The goal of this study was to determine the bactericidal effectiveness of a portable UV-LED water treatment system, developed by the authors, using the sanitary indicator microorganism E. coli. The authors' portable UV water purification system model, which uses UV-LED lights with a wavelength of 279 nm, was used for this study. Microbiological research was conducted on the sanitary indicator microorganism E. coli (strain UKM B-906) from the collection of the D.K. Zabolotny Institute of Microbiology and Virology. The results of the study showed that the developed model meets the necessary criteria: it is portable and energy-efficient (powered by a standard power bank or solar battery). At a 10-minute exposure, it completely inactivates E. coli at the highest concentration. For lower concentrations, even a 5-minute exposure is effective. When testing the absorption of UV radiation in the A, B, and C zones by a quartz tube, which is supposed to allow UV radiation to pass through with minimal energy loss, it was found that the absorption was lowest (less than 5%) at a distance of 20 cm. Therefore, the method of disinfection using UV-LEDs with a wavelength of 279 nm is effective for improving the epidemiological safety of drinking water. Portable systems based on this technology could be a promising solution for obtaining safe drinking water during emergencies.
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