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The principle of ultraviolet sterilization


1. What is ultraviolet light Ultraviolet light is a kind of radiant energy, an electromagnetic wave energy that can pass through air and space at the speed of light. In physics, it can be divided according to different wavelengths: ultraviolet rays with a wavelength of 315nm to 400nm are called UV-A; ultraviolet rays with a wavelength of 280nm to 315nm are called UV-B; ultraviolet rays with a shorter wavelength of 100nm to 280nm are called UV-C. UV-A usually only increases the pigmentation of human skin; UV-B can make the skin reddened and will soon blacken; UV-C is harmful to life, causing microorganisms to mutate or cause sudden death.

The ultraviolet rays used to eliminate bacteria and viruses in water belong to the ultraviolet rays with shorter wavelengths. According to research, when the wavelength of ultraviolet rays is around 250-260nm, it will damage chromosomes and pose the greatest threat to organisms. 2. How to sterilize ultraviolet rays Ultraviolet sterilizing is a technology recognized by the National Sanitation Foundation (NSF). Other technologies that are also used in water quality treatment, such as mechanical filtration, reverse osmosis and hollow fiber membranes, are not recognized by NSF.

Ultraviolet sterilization is one of the most commonly used high-efficiency water quality treatment technologies at present. It can be used independently or in combination with sediment filtration, reverse osmosis, activated carbon adsorption, deionization, and many other water treatment methods. The application principle of ultraviolet sterilization is the same as that of fluorescent lamps, except that the inside of the lamp tube is not coated with fluorescent substances, and the material of the lamp tube is made of quartz glass with high ultraviolet penetration rate to protect the outer tube. When there is a maximum absorption value, it will destroy the living genetic material of bacteria and virus nucleic acid (DNA), and produce intense chemical changes in the molecules to make it impossible to reproduce. One of the most significant reactions is the formation of diners by pyrimidine bases in nucleic acid molecules.

Ultraviolet rays can effectively eliminate bacteria and viruses in water. At present, it is believed that the main reason is the formation of pyrimidine dimers. In addition, the "light-water reaction" caused by ultraviolet rays in nucleic acids and the "photobridging reaction" when nucleic acids interact with proteins , also has some influence on it. Poolking is the best swimming pool equipment manufacturer and supplier in China. Poolking exists to provide the highest quality swimming pool equipment while offering competitive pricing..

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