Ultraviolet sterilization is to destroy and change the DNA (deoxyribonucleic acid) structure of microorganisms through ultraviolet radiation, so that the bacteria die immediately or cannot reproduce their offspring to achieve the purpose of sterilization. The real germicidal effect is UVC ultraviolet rays, because the C-band ultraviolet rays are easily absorbed by the DNA of organisms, especially the ultraviolet rays around 253.7nm.
The ultraviolet germicidal lamp has two main emission spectrum lines: 254nm and 185nm. 254nm ultraviolet rays kill bacteria by irradiating the DNA of microorganisms. 185nm ultraviolet rays can turn O2 in the air into O3 (ozone). Ozone has a strong oxidizing effect and can effectively kill bacteria. Propagation and disinfection in a straight line have the disadvantage of dead ends.
Ultraviolet sterilization is a purely physical disinfection method. It has the advantages of simple and convenient, broad-spectrum and high-efficiency, no secondary pollution, easy management and automation, etc. With the introduction of various new-designed ultraviolet lamps, the application range of ultraviolet sterilization is constantly increasing.
