Can an air purifier remove smog?

　　The smog made the air purifier fire. After all, people spend 80% of their time indoors. It is impossible for us to go out and wear gas masks, but it is not difficult to change the quality of indoor air. However, can air purifiers really remove smog like the legend has it? How to tell whether the air purifier is effective or not!

　　Can the air purifier remove smog?

　　At present, the air purification products on the market can be basically divided into two categories. The first category relies on a variety of adsorption filter materials, such as filters, activated carbon, and photocatalysts to absorb harmful substances in passive purification. Another type of negative ion technology is used to actively purify pollutants in the air. Different product types have different functions, so they cannot be generalized. Smog is a general expression of the excessive content of various suspended particulate matter in the atmosphere. Sulfur dioxide, nitrogen oxides and inhalable particulate matter are the main components of haze. The first two are gaseous pollutants, and the last particulate matter is the aggravated fog. The chief culprit of haze pollution. With the deterioration of air quality, the phenomenon of haze weather has increased and the damage has increased. Many regions in China incorporate haze weather phenomena into fog as early warning and forecasts of severe weather. Collectively referred to as "smoggy weather." Therefore, air purifiers must not only remove particulate pollutants, but also purify sulfur dioxide, nitrogen oxides and other pollutants. Different air purifiers have different haze removal effects.

　　Filter passive air purifier

　　The filter type air purifier uses a fan to draw air into the machine, and filters the air through the built-in filter, which can mainly filter dust, odor, and disinfect. This kind of filter type air purifier mostly uses filter + activated carbon filter + other filters to process the air. Among them, the filter screen has the function of filtering dust particles, and other activated carbons are mainly used to absorb odors, which have a better purification effect on larger particles, but have a poor purification effect on ultrafine particles and gas pollutants.

　　Negative ion active air purifier

　　Active purification technology mainly uses negative oxygen ions as a purification factor for air purification. The purification effect of negative ions on the air is derived from the combination of negative ions with bacteria, dust, smoke and other positively charged particles in the air, and they gather into balls and fall to eliminate the harm of PM2.5. Experiments have shown that the smaller the diameter of the floating dust, the easier it is. Precipitated by negative ions. In addition, negative ions have a high-efficiency degradation effect on toxic and harmful gases. The common toxic and harmful chemical gases in indoor air can be broken down into carbon dioxide and water by opening chemical molecular bonds by negative oxygen ions. It also has a decomposing effect on hydrogen sulfide and ammonia. Any side effects, there is a good effect of removing haze.

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