Can formaldehyde be removed by opening a window? How does ventilation remove formaldehyde?

Opening windows for ventilation is a widely circulated method of removing formaldehyde. People say that the effect of ventilation on removing formaldehyde is as good as nose and eye. In order to save everyone from taking some detours on the road to removing formaldehyde, online Let’s analyze the principles behind the popular ventilation methods for formaldehyde removal!

First of all, many netizens also mentioned some of the chemical properties of formaldehyde, and decomposed the principle of formaldehyde removal through ventilation, and also included the precautions that need to be taken when ventilating to remove formaldehyde. However, when everyone adopts After a period of time, you will find that the formaldehyde removal method through ventilation is not very effective. The main reason is that ventilation can only blow away the formaldehyde in the indoor air, while the formaldehyde in decoration materials and furniture will continue to flow into the room. It is volatile in the air, and the volatilization time period will be as long as 3-15 years, so short-term ventilation to remove formaldehyde has little effect at all.

Secondly, there are conditions for formaldehyde from pollution sources such as decoration materials and furniture to volatilize into the indoor air. That is, the indoor temperature must reach above 19 degrees Celsius before formaldehyde will volatilize. The higher the temperature, the faster the volatilization rate of formaldehyde. Now you think about whether ventilation and formaldehyde removal will have no effect in the colder winter, and the temperature is not high in spring and autumn. The effect of formaldehyde removal in this way is not very great. Only in hot weather in summer, the indoor temperature will be relatively high. At this time, the effect of formaldehyde removal by ventilation is still good, so when the weather is cold, it is necessary to use ventilation to remove formaldehyde. First raise the indoor temperature.

Finally, can the indoor formaldehyde be blown away by opening the windows? This obviously has certain conditions. For example, if the house is not transparent from north to south, even if all the windows are opened, there will not be much wind. Also, even if the house with low floors is blocked by trees, there will be no wind. , so only houses with a transparent layout and relatively high floors will have good ventilation effects after opening windows. In this way, the effect of formaldehyde removal will naturally be good. But back to the original problem, the formaldehyde volatilization cycle is so long. Ventilation to remove formaldehyde requires at least three years. Many owners cannot wait, so ventilation to remove formaldehyde is not suitable for all owners!