The house has just been renovated, and I am afraid that formaldehyde has not moved in yet. How long does it take for formaldehyde concentration to drop?

First, after the renovation of the new house, formaldehyde was released slowly, but it was released more at first and slowly. Ventilation can only remove the odor of formaldehyde to a great extent, and it takes 3- 15 years for formaldehyde to be completely released, so in addition to formaldehyde needs some auxiliary measures.

Second, the method of removing formaldehyde:

Ventilation in addition to formaldehyde scheme

Through the circulation of indoor air, the content of some free harmful substances in indoor air can be reduced, thus reducing the harm of such substances to human body, but the symptoms are not cured. People often close doors and windows in winter, so the indoor and outdoor air can't circulate. Not only the formaldehyde content in indoor air will increase, but also radon will accumulate continuously, even reaching a very high concentration.

2. Activated carbon adsorption method

Activated carbon is an internationally recognized addict. Activated carbon masks and gas masks are made of activated carbon. Primary titanium activated carbon uses the physical function of activated carbon to deodorize and detoxify; No chemical additives, no influence on human body. Put two or three dishes in each room for 72 hours, which can basically eliminate indoor odor. This method can be used for medium and low pollution, and can also be combined with other chemical methods, and the comprehensive treatment effect is better.

3. Ordinary local recruitment

300 grams of black tea is soaked in hot tea and two washbasins of water, and placed indoors, with windows open for ventilation. Within 48 hours, the indoor formaldehyde content decreased by more than 90%, and the pungent odor was slightly eliminated.

4. Plant deodorization method

Plant decontamination can be selected for medium and low pollution: generally, the indoor environment is light and moderate pollution, and the pollution value is less than 2 times of the national standard. Plant decontamination can achieve a certain effect. Choose and place plants according to different functions and sizes of the room. Generally speaking, it is more appropriate to put two pots of plants with a height of10.5m in a room with a square meter of/kloc-0. (Recommended: Aloe, Chlorophytum, Hupilan)

5. Method of removing formaldehyde odor from furniture

A: You can put two pots of salt water indoors, and the smell of paint will soon disappear. If it is the paint smell of wooden furniture, you can scrub it with tea for several times, and the paint smell will be eliminated faster.

B: You can go to the market and choose some high-tech deodorizing cleaners, which can remove the harmful gases emitted by newly decorated rooms and new furniture. According to relevant sources, these deodorizing detergents are generally imported products, which use ammonia compounds to react with harmful substances, thus playing a role in deodorization and cleaning. In newly renovated rooms, you can pour this deodorant into the dishes, put the dishes in each room separately, and then combine scrubbing and deodorization methods to effectively remove the unpleasant smell in a few days.

C: In order to quickly remove the residual paint smell, cotton balls can be soaked in citric acid and hung indoors and in wooden furniture.