What are air pollution and air purification?aromatherapy diffuser manufacturer

　　Air pollution and air purification are not only related to the level of air governance in countries and cities, but also related to each of us, who share the same fate as we breathe. Except for people, it is even related to every creature living on the earth. As long as they need to breathe, they will follow related to air pollution. So how many people understand and know the principles of air pollution and air purification? Let me tell you a little bit about the three points below.

　　1. What are the common pollutants in the air?

　　The main sources of air pollutants are natural sources and anthropogenic sources. Natural sources: Formation and emission of many different pollutants and chemicals from natural processes in the Earth’s crust, such as particulate matter and gaseous pollutants (sulfur dioxide, hydrogen sulfide, methane, etc.) emitted by volcanic eruptions; forest fires also cause air pollution (e.g. smog) , soot, unburned hydrocarbons, carbon monoxide, nitrogen oxides, etc.); particles from tsunami eruptions; soil bacterial spores, pollen, dust, etc.; Atmospheric reactions of organic compounds. Anthropogenic sources: it is the main aspect of air pollution, which is mainly generated from people's production activities and daily activities (industry, transportation, various combustion and garbage disposal, etc.); anthropogenic sources are further divided into special sources and comprehensive sources. If people can clearly and unambiguously point out that they come from a certain emission source based on the pollutants contained in the air, the source is called a special source, and a special source generally refers to an individual large factory or the only emission of a certain air pollutant. ; If there are many emission sources in an area, fixed or mobile, it is impossible for people to determine that they come from a specific source according to the composition and nature of the pollutants contained in the air, which are collectively referred to as comprehensive sources.

　　Air pollutants mainly include: carbon monoxide, nitrogen oxides, ozone, hydrocarbons, particulate matter, sulfur oxides, mercury, volatile organic compounds, lead, toxic substances, etc.

　　2. What are the purification technologies of air purification equipment?

　　For indoor air purification, air purification equipment removes particulate matter and microorganisms (bacteria, etc.) purification technology, the mainstream has two kinds of particulate matter filter and electrostatic adsorption, of which HEPA (high-efficiency filtration) filter is widely used by mid-to-high-end air purification equipment; The mainstream purification technology of gaseous pollutants is generally realized through physical adsorption materials such as activated carbon or chemical reactions (including catalysis and complexation reactions).

　　It should be noted that the purification of indoor air pollutants needs to make the air flow, and the air purification effect can be better played after the windows are closed. In terms of technical principle, the air purification drive of air purifiers is generally realized by motors and fans. Of course, there are also technologies such as ion wind and large-area passive diffusion.

　　3. What are the air purification equipment?

　　In terms of use effect or applicable area, air purification equipment can be divided into large, small and small air purifiers, and generally, the larger the size of the air purifier, the larger the applicable area. For example, large air sterilizers and floor-mounted air purifiers can purify indoor areas of 40 square meters or more, while small car purifiers may only purify an area of about 10 square meters. Different types of air purifiers can be applied to different places, such as home, office, hotel, car and so on. Therefore, when purchasing an air purifier, you should make a targeted choice according to your own needs. In addition, in terms of purification function, air purifiers can be divided into: removal of air particles, sterilization, odor removal, smoke removal, and the removal of formaldehyde, benzene and other gaseous pollutants that are currently relatively high in demand.

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