Why does the UV sterilizer have dual bands?
The times are advancing, and the development of science and technology has made people's disinfection technology more and more sophisticated. Because environmental pollution is now being paid more and more attention, people are paying more and more attention to health issues. The time when people are exposed to water pollution in their lives is often the source of disease transmission, which has also led to the current research on water disinfection and sterilization products. An unprecedented development. In this regard, ultraviolet rays are often used as a common means of disinfection and sterilization.
When using ultraviolet rays for disinfection and sterilization, considering that different wavelengths of ultraviolet light have different effects, there is a dual-band ultraviolet sterilizer that is more widely used today. Ultraviolet radiation with a more classic sterilization wavelength of 253.7nm can cause the DNA or RNA of harmful microorganisms in water such as bacteria and viruses to mutate, resulting in the loss of self-replication ability of these microorganisms and death.
In addition, the 185nm waveband uv sterilizer can absorb oxygen in the air and produce ozone. According to an experimental study abroad, 185nm ultraviolet light can produce a photochemical reaction in water, that is, ionize water to generate hydroxyl groups. Those who have passed junior high school chemistry should know that hydroxyl has a strong oxidizing effect, so the purpose of generating it is to mineralize and decompose organic matter in the water, so as to achieve the effect of reducing TOC.
The main reason for making this dual-band ultraviolet sterilizer is that the existing technology is somewhat inadequate. Considering that the penetration of a single wavelength of ultraviolet rays may be limited, and some blind spots may not be irradiated, the sterilization effect of this dual-wavelength band will be stronger and more thorough. The transmittance of 185-band ultraviolet rays can reach about 65%, and the transmittance of 254nm-band ultraviolet rays can reach about 88%. Because they have good sterilization and disinfection effects, they are also called double-sterilization ultraviolet sterilizers.