Practical methods for removing formaldehyde from indoor environments

Release Time：

2018-10-11

In the cold winter, the doors and windows of our citizens' homes are generally tightly sealed. The reporter from Lianying Heating Network reminds everyone: During the heating season, due to poor indoor ventilation, formaldehyde concentration may increase, posing a great threat to human health. After winter heating, most people are unwilling to open windows frequently for ventilation. The stagnant air causes a large amount of formaldehyde to accumulate indoors; at the same time, the increase in indoor temperature during heating also accelerates the rapid release of formaldehyde. Long-term exposure to low doses of formaldehyde can easily lead to skin and respiratory diseases, and in severe cases, even cause female infertility, fetal malformations, leukemia and other serious diseases. The following is from a reporter at Lianying Heating Network

　　In the cold winter, the doors and windows of our citizens' homes are generally tightly sealed. Lianying Heating Network reporters remind everyone: During the heating season, due to poor indoor ventilation, formaldehyde concentration may increase, posing significant health risks.

　　After winter heating, most people are reluctant to open windows frequently for ventilation. The lack of air circulation causes a large amount of formaldehyde to accumulate indoors; at the same time, the increase in indoor temperature during heating also accelerates the rapid release of formaldehyde. Long-term exposure to low doses of formaldehyde can easily lead to skin and respiratory diseases, and in severe cases, even female infertility, fetal malformations, and leukemia.

　　Below are five methods summarized by Lianying Heating Network reporters for effectively removing formaldehyde during the heating season:

　　Method 1: Activated Carbon Adsorption Method

　　Solid activated carbon has many pores and has a strong adsorption and decomposition effect on harmful substances such as formaldehyde. The smaller the activated carbon particles, the better the adsorption effect. However, the amount of activated carbon placed varies depending on the size of the space. In addition, activated carbon needs to be replaced after reaching a certain degree of adsorption. Although activated carbon is effective, it cannot completely remove formaldehyde from the air.

　　Method 2: Plant Absorption Method

　　Plants have a strong ability to absorb formaldehyde, such as cacti, spider plants, aloe vera, ivy, cycads, and chrysanthemums. Plants can only play an auxiliary role in the entire process of air purification. If the formaldehyde content in the air is too high, it may even cause the death of the plants themselves. Generally speaking, plants with large leaves and herbs have a better effect on absorbing formaldehyde, such as spider plants and snake plants. Therefore, Lianying Heating Network reporters suggest that you can grow more green plants in a mild indoor environment.

　　Method 3: Chemical Agent Purification Method

　　Currently, formaldehyde scavengers on the market are divided into two types: one purifies the air by neutralizing formaldehyde to generate harmless substances; the other purifies the air by sealing formaldehyde and preventing its volatilization. Currently, some people believe that formaldehyde sealants completely restrict the volatilization of formaldehyde. In fact, formaldehyde sealants cannot completely seal formaldehyde; they can only reduce the amount of formaldehyde released.

　　Method 4: Photocatalytic Decomposition Method

　　Under the stimulation of light, the catalyst in the photocatalyst reacts with oxygen and water in the air to generate negative ions and hydroxyl radicals, which can oxidize and decompose various organic and inorganic pollutants, and finally degrade them into harmless substances such as carbon dioxide, water, and corresponding acids, thereby achieving the effect of decomposing pollutants and purifying the air. As a new type of material, photocatalysis theoretically will not cause secondary pollution, but due to the different manufacturing processes of photocatalysts from different manufacturers, it cannot be said that it will definitely not cause secondary pollution. In addition, the operation of using photocatalysts is relatively complex and generally requires a specialized service company to provide services.

　　Method 5: Purifier Treatment Method

　　Lianying Heating Network learned that air purifiers currently on the market are divided into negative ion type, ozone type, filtration adsorption type, electrostatic integration type, and photocatalytic type. Different air purifiers have different working principles. For example, the negative ion type produces negative ions to decompose odors and attached dust in the air, thereby achieving the purpose of purifying indoor air. However, air purifiers are generally only effective when used in enclosed spaces. If you use an air purifier with the windows open, it will not only be ineffective but also waste electricity.

Conditions for indoor air quality testing

None

Conditions for indoor air quality testing

None

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