Conventional air is composed of 78% nitrogen, 21% oxygen and a small amount of inert gas, but when certain toxic and harmful substances enter the normal air, the normal air also disappears. If its concentration exceeds the range specified by the standard, it will cause more harm to our body. Hazardous substances in the air generally have 5 states: 1, dust, 2 vapor, 3. smoke, 4. fog, and 5. gas. Let us find out together.
The second is gas and steam, both of which belong to gaseous substances. The difference between gaseous state and steam is that gaseous state is a harmful substance that forms gaseous state under normal temperature and pressure conditions, such as carbon monoxide and hydrogen sulfide. Steam is a liquid or solid substance that evaporates at normal temperature and pressure, such as benzene, toluene, gasoline, and mercury vapor.
No matter what form they appear in, they are harmful to our health. We must do a good job of respiratory protection. In the presence of harmful substances, we can use air purifiers to filter these harmful substances.
The air purifier uses a variety of different technologies and media to provide users with clean and safe air. Commonly used in air purification technology are: adsorption, negative (positive) ions, catalysis, photocatalyst, superstructure photomineralization, HEPA high-efficiency filtration, electrostatic dust removal, etc.; material technologies include: photocatalyst, activated carbon, synthetic fiber, HEPA high-efficiency materials, negative ions Generator and so on. At present, most air purifiers are of composite type, that is, multiple purification processes and various material media are simultaneously used.
air purifiers are used in household, medical, industrial and other fields. In the household field, stand-alone household air purifiers are the mainstream products in the market. Its main function is to remove particulate matter in the air, including allergens, indoor PM2.5, etc., and it can also solve the problem of VOC air pollution caused by indoor, underground space, and car decoration due to reasons such as decoration. In a relatively closed space, due to the continuous and uncertain release of air pollutants, the use of air purifiers to purify indoor air is an internationally recognized method to improve indoor air quality.
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