The renovated room always has a pungent smell, and the stay is a little longer. People will have dizziness, glare, sore throat, chest tightness and other adverse reactions, which is a visual manifestation of formaldehyde damage.
The release period of formaldehyde is very long, up to 3-15 years. Now it is summer, the sunshine time is long, and the temperature is high, which will accelerate the release rate of formaldehyde. The lower air pressure and hot and humid climate will hinder the natural dissipation of formaldehyde. Therefore, summer is also a season of high formaldehyde pollution.
Formaldehyde in home decoration mainly comes from 4 aspects, which needs to attract everyone's attention:
Plywood, wood-based panels: blockboard, plywood, medium density fiberboard and particleboard for interior decoration. Because formaldehyde has strong adhesion and strengthens the hardness, anti-corrosion and anti-insect effects of the board, the adhesive used in household decoration wood-based panels is urea-formaldehyde resin with formaldehyde as the main component.
Paint, latex paint: Xiaobian specially reminds the decoration family, try to use the standard qualified less environmentally friendly materials with less toxicity, no pollution and less pollution. Latex, paint and paint containing formaldehyde are widely used in wood decoration engineering and wall decoration. The surface treatment, especially in the latex of the closed wall, is difficult to remove.
Indoor textiles: In the production process of textiles, in order to increase the anti-wrinkle performance and waterproof performance, the manufacturer will add some additives containing formaldehyde, which are widely used in bedding, wallpaper, curtains and fabric furniture.
Wood-based panel furniture: Sampling studies show that the formaldehyde over-standard rate of ordinary wood-based panel furniture reaches 48.23%.
In the past, the method of controlling formaldehyde pollution caused by decoration was relatively simple, and people usually chose to use ventilation to remove pollution. However, the newly renovated house is heavily polluted, and the ventilation method is slow to control. In order to clean the formaldehyde, it needs to be continuously ventilated for more than one year. However, the pace of people's life is now accelerating, and it is difficult to meet this condition. In addition, studies have shown that the release period of formaldehyde can reach 3-15 years, although short-term ventilation can reduce the indoor formaldehyde content, but this does not remove formaldehyde hidden pollution.
Fortunately, with the development of the economic level, science and technology are also constantly improving, and there are more and more means to control formaldehyde pollution. Below, Xiaobian will summarize some good ways to control formaldehyde pollution.
1. When decorating, we should minimize the use of decoration materials. Even if the decoration materials with qualified harmful substances are used in large quantities, the formaldehyde released will accumulate together, which may cause formaldehyde pollution.
2. Strengthen ventilation. Ventilation can discharge indoor harmful substances and reduce the concentration of harmful substances such as formaldehyde. However, the ventilation method is slower than formaldehyde, and it can not be interrupted. If the ventilation is not adhered to, the indoor pollution will be repeated.
3. Activated carbon. Activated carbon is a traditional means of treating formaldehyde. Its surface has fine pores, which can be used to adsorb odor and partial formaldehyde pollution after decoration. Activated carbon is physically adsorbed and safely treated, but its service life is about 6-10 months. The use of activated carbon to control formaldehyde pollution requires constant replacement of new charcoal.
4. Photocatalyst. The photocatalyst is a catalytically decomposing harmful substance such as formaldehyde by ultraviolet light, and has the advantages of no saturation, strong decomposition ability, and no secondary pollution. However, it should be noted that it should be used in the case of sufficient ultraviolet radiation. If the ultraviolet light is insufficient, its ability to be treated will be weakened.
5. Nano-stone. Naphtha is a new method of formaldehyde treatment. NaHao stone can not only absorb harmful substances, but also decompose harmful substances such as formaldehyde into water and carbon dioxide which are harmless to humans. Although its price is slightly higher, it has strong governance ability. Fast, cost-effective, suitable for emergency stays and heavily polluted homes.
6. Air freshener. The principle of the treatment of air fresheners is to use chemical reactions to consume and decompose harmful substances. Therefore, in the process of decomposition, new compounds may appear to form secondary pollution. It is not recommended to use air fresheners in bedrooms, kitchens, etc. In addition, households with pregnant women and children do not recommend the use of air fresheners to treat formaldehyde pollution.
Editor in charge: Liu Bing
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