Disinfection principle of ultraviolet sterilizer

According to the difference of biological function, UV sterilizer can be divided into UV-A (320-400nm), UV-B (275-320nm), UV-C (200-275nm) and vacuum ultraviolet parts The UV-C part of the UV sterilizer is actually used in water treatment In this band, the UV near 260nm has been proved to be the UV with high sterilization efficiency Zui Guanyu UV sterilizer integrates optics, microbiology, machinery, chemistry, electronics, hydrodynamics and other comprehensive sciences The special designed rate, high intensity and long-life UV-C light generating device is used to generate strong UV-C light to irradiate water When the bacteria and virus in the water are irradiated by UV-C light (wavelength 253.7nm) of a certain dose of UV sterilizer Its cell DNA and structure are destroyed, cell regeneration can not be carried out, so as to achieve water disinfection and purification The UV sterilizer with 185nm wavelength can also decompose organic molecules in water, generate hydrogen radical and oxidize organic molecules in water to carbon dioxide, so as to remove TOC UV sterilizer has the following advantages: 1 UV sterilizer rate sterilization: UV sterilization of bacteria and viruses can reach 99% - 99.9% sterilization rate in one to two seconds 2 Broad spectrum of UV sterilizer: the broad spectrum of UV sterilizer is Zui high, which can kill almost all bacteria and viruses 3 UV sterilizer has no secondary pollution: UV sterilizer does not add any chemicals, so it will not cause secondary pollution to water body and surrounding environment Does not change any of the ingredients in the water 4 The operation of ultraviolet sterilizer is safe and reliable: traditional disinfection technology, such as using chloride or ozone, its disinfectant itself is a highly toxic and flammable substance There is no such hidden danger in the UV disinfection system 5 The cost of UV sterilizer and operation and maintenance is low: the UV sterilizer occupies a small area, and the structure requirements are simple, so the total investment is less In the aspect of operation, the cost is also low At the level of thousand tons of water treatment capacity, the cost is only 1 / 2 of chlorine disinfection Features of the disinfection equipment of Guanyu UV sterilizer 1 The UV-C (ll or LH) UV lamp with the selection rate of UV sterilizer is the first low-pressure and high-intensity UV lamp in the world, with the service life of more than 8000-10000 hours 2 The ultraviolet sterilizer adopts quartz sleeve with high transmittance and purity to ensure that the ultraviolet ray penetrates more than 90% 3 The world advanced ballast for constant and high intensity ultraviolet is selected for the UV sterilizer, which can ensure the normal operation of the whole system in complex circumstances 4 Stainless steel is selected as the reactor (304 or 316 material) and the inner wall of the reactor is specially polished to improve the sterilization effect