No matter what season, ventilation is the most direct way to remove formaldehyde. The air displacement principle can effectively reduce the concentration of formaldehyde in the air. Therefore, even when heating in winter, you should open doors and windows appropriately for ventilation. When the window is too cold, a fresh air system can be installed to maintain air circulation. In addition, you can also use chlorine dioxide slow-release gel, or invite professional formaldehyde companies to treat.Generally speaking, the volatilization point of formaldehyde is 19℃, and the concentration will increase by 0.4 times every time the temperature increases. The temperature in winter is relatively low, and the volatilization of formaldehyde was originally limited. However, due to the reduction of heating and ventilation in winter, the concentration of formaldehyde may be higher than that of newly renovated houses. Therefore, the treatment of formaldehyde in winter has become a relatively serious indoor air pollution problem to be solved.
So what are the ways to remove formaldehyde in winter:
The first is to open windows for ventilation. The ventilation method is the most direct method to remove formaldehyde. Tests have shown that 30% of formaldehyde molecules can be removed by opening windows for ventilation for more than 6 months. After the winter, the indoor temperature rises, the release of formaldehyde is active, and the lack of air circulation will cause the indoor formaldehyde content to rise sharply. Therefore, it is necessary to open windows for ventilation in winter, especially for new houses that have just moved in. You must open windows for more than 2 hours a day for ventilation. 9 to 12 in the morning is the best time to open windows for ventilation.
The second is the fresh air system. In winter, the weather is cold, and many people do not want to open doors and windows to let air-conditioning into the room. At this time, the fresh air system is a better choice. The charm of the new wind direction lies in the uninterrupted ventilation, which can ensure the circulation of indoor and outdoor air without opening doors and windows. This will save you from hesitating about driving heating and ventilation every day. However, the system of the new house needs to be designed and installed during the renovation, and the later renovation is more troublesome.
The third is the closed method. When the humidity is about 30°C and the humidity is about 70%, the best emission temperature of formaldehyde is 30°C. Generally, the maximum formaldehyde concentration can be reached within about 8 hours of indoor airtight time. If the new house is not ready to move in, you can turn on the heating and close it for 8 hours during the day, and use a humidifier to ensure that the humidity reaches the standard. Open the doors and windows at night to ventilate for about 0.5-2 hours to ensure that the air in the entire room can be replaced with outdoor air to the greatest extent. Finally, repeat this step within 2-3 weeks to minimize the concentration of formaldehyde.
The fourth is the use of photocatalysts or photogreen compounds. We can spray some photocatalyst or photogreen on the decorative materials to decompose formaldehyde. At present, professional management companies use two materials: photocatalyst and photogreen to remove formaldehyde. The difference is that photocatalyst requires ultraviolet radiation to decompose, while photogreen does not. In addition, the decomposition of the optical medium is not affected by the conditions, so that the photochlorophyll is maintained well. However, the price of chlorophyll is relatively high.Finally, the use of chlorine dioxide sustained-release gel to remove formaldehyde is a more affordable and effective method. Chlorine dioxide slow-release gel can not only treat free formaldehyde in the air, but also has strong oxidizing properties.
Therefore, when decorating a new home or buying back new furniture, it is recommended to use chlorine dioxide slow-release gel to remove formaldehyde. Regardless of the price, the effect of chlorine dioxide slow-release gel is very good.
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