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Principle and function of UV-C

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Author : Juan
Update time : 2020-03-30 15:35:53

Principles of modern UV-C disinfection

Modern UV-C disinfection technology is based on the disciplines of optics, biology, chemistry, mechanics, electronics, fluid mechanics, aerodynamics, and civil engineering, and uses specially designed high efficiency, high strength and long life C Ultraviolet light (T = 254nm)
The strong ultraviolet C light generated by the generating device irradiates the leech or the air. When various bacterial viruses in water or air pass through the area exposed to UVC, UV rays will penetrate the cell membrane and nucleus of microorganisms, destroying the molecular bonds of nucleic acids (DNA or RNA), causing them to lose their replication ability or viability, because cells cannot Replicating, the microbes die soon, killing all bacterial viruses in the leech or the air without using any chemicals. UV-C disinfection does not produce any secondary pollutants. It belongs to the latest generation of disinfection technology in the world. It has advantages unmatched by other disinfection methods such as high efficiency, broad spectrum, low cost, long life, large water volume, and no pollution.

Advantages of modern UV-C disinfection technology

The disinfection effect of UV-C water disinfection technology on bacterial viruses and other pathogens has been recognized worldwide. UV-C water disinfection technology has the following obvious advantages.
   1. High efficiency sterilization
UVC disinfection technology has unparalleled sterilization efficiency. The sterilization efficiency can reach 99% -99.9%. Table 1 lists the disinfection time of UV-C technology for several common bacterial viruses, which generally takes less than 1 second. The traditional chlorine, ozone and other chemical disinfection methods to achieve the sterilization effect of ultraviolet C generally takes 20 minutes to 1 hour.
   Table 1 The bactericidal efficiency of uvc technology against common bacterial viruses (ultraviolet radiation intensity: 30,000 μW / cm²)


  2. High efficiency sterilization and broad spectrumUltraviolet C technology

UV-C technology Among all current disinfection technologies, the broadest sterilization is the highest. It can efficiently kill almost all bacteria and viruses. And it is very harmful to human beings, and chlorine or even ozone can not effectively kill parasites (such as cryptocystis ridis cryptosporidium, Giardia, etc.) can effectively kill. Table 1 also shows the broad-spectrum sterilization of UV-C water disinfection equipment.

  3. No secondary pollution
Because the UV-C technology can be controlled to just sterilize without adding any chemicals, it will not cause secondary pollution to the water body and surrounding environment. Does not change any ingredients in the water. For chlorine disinfection, the organic chlorine produced by organic matter in water has been recognized as having a carcinogenic effect on the human body, and the chlorine compounds contained in water may have adverse effects in some cases, causing toxic effects to aquatic organisms and the water environment. The ozone method has similar problems. A large amount of unpleasant ozone that has not been dissolved in water volatilizes into the air, which is harmful to the physical and mental health of nearby staff.

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