The reason why it is difficult to remove the virus is that its size is extremely small, only 0.1μm in size, which is one thousandth of the size of bacteria. Moreover, viruses are a form of non-cellular life, and many methods for removing bacteria are actually completely useless for viruses.
The traditional filter air purifier filters, adsorbs, and purifies the air through a composite filter composed of a HEPA filter + a variety of structures. With regard to the small existence of viruses, it is difficult to filter, and further Of disinfection equipment.
At present, air purifiers on the market generally have two forms of killing viruses. One is the ozone form. The higher the ozone content, the better the virus removal effect. However, ozone overshoot will also affect the human respiratory system and nerves. System, immune system, skin damage. If you stay in an environment with too much ozone for a long time, there is a potential carcinogenic hazard and so on. Therefore, this type of air purifier operates in a form of sterilization and disinfection, and people cannot be present.
The other is that ultraviolet rays with a wavelength of 200-290nm can penetrate the outer shell of the virus, and damage the internal DNA or RNA, causing it to lose the ability to reproduce, so as to achieve the effect of killing the virus. This type of air purifier can have ultraviolet rays built into the machine to prevent ultraviolet rays from leaking, and people can be present during operation.
Post time: Aug-10-2021