Ventilation method: The best method is ventilation, which is the simplest, most economical and most effective method. It is also the first method that must be done after the decoration is completed. Generally, ventilation for more than 3 months is better.

Plant absorption method

Plants have a strong ability to absorb formaldehyde, such as cactus, chlorophytum, reed, ivy, cycad, chrysanthemum and so on. Generally speaking, plants and herbs with large leaves absorb formaldehyde better, such as chlorophytum, Huwei orchid and so on. Formaldehyde is a long-term harmful substance, so putting some absorbable green plants indoors can reduce the daily formaldehyde content.

Odor absorption masking method

Put tea residue, grapefruit peel, onion slices, pineapple pieces, etc. In a newly renovated room or fumigate the whole room with white vinegar.

Using some earthy methods to absorb and mix flavors can achieve the purpose of deceiving others. Of course, placing some onion slices and pineapple slices in some small spaces of furniture, such as drawers and wardrobes, can achieve the effect of absorbing formaldehyde in some small spaces. At the same time, you can also cover up some formaldehyde smells with the fragrant taste of fruits, and treat the symptoms rather than the root cause.

Activated carbon adsorption

Solid activated carbon has the characteristics of many pores and has strong adsorption and decomposition effects on harmful substances such as formaldehyde. The smaller the activated carbon particles, the better the adsorption effect. Activated carbon is also placed in small spaces such as furniture, and the absorption effect is good. But after using it for a period of time, it must be exposed to the sun before using it, otherwise the activated carbon will lose its adsorption.

Photocatalytic decomposition method

Stimulated by light, the catalyst in photocatalyst generates negative ions and hydroxyl radicals with oxygen and moisture in the air, which can oxidize and decompose various organic pollutants and inorganic pollutants, and finally degrade them into harmless substances such as carbon dioxide, water and corresponding acids, thus achieving the functions of decomposing pollutants and purifying the air. Formaldehyde is released slowly, and this method needs long-term preparation.

Purification method of chemical preparation

There are two kinds of formaldehyde scavengers on the market at present. One is to purify the air by neutralizing formaldehyde and generating harmless substances. The other is to purify the air by blocking formaldehyde and preventing its volatilization. This is the chemical action of chemicals. In order to prevent the secondary pollution of chemicals, we should also pay attention to the sealing effect of formaldehyde after sealing.