Application and popularization of uvc ultraviolet germicidal lamp
The principle of ultraviolet disinfection and sterilization is to use high-energy ultraviolet light to break the DNA double helix chain, so as to achieve the inactivation of bacteria and viruses; the ultraviolet band can be divided into different bands of UVA, UVB, and UVC. UVC is a band with the shortest wavelength and the highest energy. In fact, for sterilization and disinfection, the most effective UVC band is called deep ultraviolet. Compared with chemical sterilization and disinfection, the advantage of ultraviolet rays is that the sterilization efficiency is high, the inactivation is generally completed within a few seconds, and no other chemical pollutants are produced.
UVC ultraviolet rays have a wavelength of 200-280 nm (nanometers), and short-wave ultraviolet rays are absorbed by the ozone layer when they pass through the stratosphere on the earth's surface and cannot reach the earth's surface. Short-wave ultraviolet rays can play an important role in the human body, so enough attention should be paid to short-wave ultraviolet rays.
At present, the sterilization ability of LED germicidal lamps on the market is relatively weak. Ultraviolet germicidal lamps are mainly used for sterilization and disinfection of water and air. Ultraviolet C (UVC) generated by ultraviolet germicidal lamps irradiates water flow. After a certain dose of UVC (wavelength 254nm) irradiation, the DNA and RNA structures of the cells are destroyed, the cells cannot be regenerated, and the bacteria and viruses lose their ability to replicate themselves, so as to achieve the purpose of sterilization and disinfection.
As a very efficient physical disinfection and sterilization equipment, ultraviolet germicidal lamp has the advantages of good effect and no secondary pollution.
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