Is the air purifier reliable for removing formaldehyde? Many people are now skeptical about this. Nowadays, science and technology are developing rapidly, and many things that were unimaginable before have become a reality. Go masters who play Go with artificial intelligence are helpless. Why do they doubt the air purifier with formaldehyde removal function? Of course, every product can be good or bad, genuine or fake. Just trusting big brands to be reliable does not actually guarantee absolute technical guarantee. The reason why people are suspicious of formaldehyde removal equipment is because harmful substances such as formaldehyde are colorless and odorless, which are difficult to feel with the senses and can only be tested with professional testing equipment.
So how should you choose a formaldehyde-removing air purifier
Formaldehyde is more difficult to remove than particulate matter. The particle size of particulate matter is larger than that of formaldehyde and generally comes from outdoors. As long as the windows are not opened, smoking and cooking are not carried out, the concentration of PM2.5 will not increase after purification. Formaldehyde mainly comes from decoration materials and furniture, and its release cycle can be as long as 3 to 15 years. Formaldehyde molecules are much smaller than particulate matter and cannot be removed by HEPA filters alone. Regardless of certain special characteristics, substances with smaller particle sizes are generally more difficult to remove. Therefore, a qualified air purifier, no matter whether it is expensive or cheap, can easily remove PM2.5, but it may not be able to remove formaldehyde and other harmful substances well.
So if the demand is only to remove PM2.5, qualified air purifiers on the market can easily handle it. If the need is to remove formaldehyde and PM2.5 by the way, you must choose carefully.
First, select by brand. Try to choose a brand manufacturer with formaldehyde removal technology background, preferably a formaldehyde purifier with guaranteed treatment effect!
Then select by using the space. Generally, the CADR value divided by 10 is the approximate applicable area of ??the air purifier. According to the national standard, the applicable area corresponding to particulate matter CADR is equal to the particulate matter CADR multiplied by a coefficient of 0.07-0.12. It should be emphasized that the CADR of the applicable area calculated by the national standard is the CADR of particulate matter, not the CADR of formaldehyde. If the indoor air pollution is serious, the coefficient can be reduced, otherwise, the coefficient can be increased. At present, the national standard does not provide a method for calculating the applicable area of ??formaldehyde. The main reason is that the sources of formaldehyde pollution are too complex and the formaldehyde release cycle is too long. Consumers can simply judge the suitability of formaldehyde through the formaldehyde CADR.
Select according to indoor pollution conditions. Air purifiers that remove PM2.5 are suitable for situations where the main indoor pollutant is PM2.5, or if there are pets, or patients with asthma or pollen allergies, and the formaldehyde concentration reaches the standard. Formaldehyde-removing air purifiers are of course suitable for situations where formaldehyde exceeds the standard. There is no need to overly consider the ability to remove PM2.5, because PM2.5 is easier to remove than formaldehyde, and its accompanying PM2.5 removal ability is generally stronger.
We know that for a newly decorated indoor space, the biggest source of formaldehyde pollution is usually furniture, especially panel furniture. Because the main component of the adhesive used in furniture is urea-formaldehyde resin, and part of the urea-formaldehyde resin is unstable. When it encounters water molecules in the air, it will hydrolyze and precipitate formaldehyde. This structural characteristic is that the indoor formaldehyde concentration will increase in a humid environment. The main reason for the high temperature is also the main reason why the higher the temperature, the higher the indoor formaldehyde content.
Everyone understands that formaldehyde does not exist in the form of formaldehyde in the source. This explains why the formaldehyde release period takes 3-15 years. Due to comprehensive considerations such as cost and quality, adhesives containing urea-formaldehyde resin are still widely used in the domestic market.
Since formaldehyde does not exist in the form of formaldehyde at the source, any formaldehyde removal method will achieve half the result with twice the effort. To truly remove formaldehyde, you need to target the source of urea-formaldehyde resin. Based on this principle, there is currently a unique targeted formaldehyde removal purifier on the market:
It allows highly active organic compounds to enter the board, etc., driven by water penetration under normal temperature conditions. In the pollution source, the oxygen atoms in the unstable structure of the urea-formaldehyde resin are removed, a neutralization reaction (polymer polymerization reaction) occurs, the molecular structure is completely changed, and a stable and irreversible resin solid is generated. The reaction process does not produce secondary pollution.
The irreversible resin solids produced by the reaction remain in the tiny pores necessary for free formaldehyde to volatilize, preventing external moisture from entering, and reducing or even eliminating the problem of urea-formaldehyde resin glue decomposing when exposed to moisture.
Actual measurements have proven that new homes treated in this way can be settled in quickly.