Removal of formaldehyde

With the development of science and technology, formaldehyde has become more and more widely used. The most common one is still in the decoration. How to remove formaldehyde? What are other errors? Let's introduce Xiaobian to everyone!

First, the ventilation method to remove formaldehyde Through the indoor air circulation, can reduce the indoor air in some free harmful substances, thus reducing the harm of such substances on the human body, but a temporary solution. In winter, people often close doors and windows, indoor and outdoor air can not circulate, not only the content of formaldehyde in indoor air will increase, helium will continue to accumulate, and even reach a high concentration.
Second, activated carbon adsorption activated carbon is an internationally recognized drug adept, activated carbon masks, gas masks are used activated carbon. The original titanium activated carbon uses the physical effects of activated carbon to deodorize and detoxify; without any chemical additives, it has no effect on the human body. Two or three dishes per room, 72 hours can basically eliminate the indoor odor. Medium or low-level pollution can be selected by this method, and this method can also be used in combination with other chemical methods, and the comprehensive treatment effect is better (recommended brand name product: Huanconn Nano Living Minerals)
Third, the chemical purification method Chemical preparation purification method is mainly through physical adsorption or chemical reaction consumes formaldehyde in the air; At present, the formaldehyde trapping agent on the market is divided into two types, one is through the neutralization of formaldehyde, generate harmless substances The way to purify the air; the other is to purify the air by blocking formaldehyde to prevent the volatilization of formaldehyde.
Fourth, the plant deodorization method in the low-level pollution can choose plant decontamination: the general indoor environment pollution in the mild and moderate pollution, pollution value in the national standard of 2 times the following environment, the use of plant purification can achieve a certain effect. According to the different functions of the room, the size of the area is selected and placed on the plant. Under normal circumstances, about 10 square meters of room, 1.5 meters high plants put two pots more appropriate. (Recommended herb spray: Dialyn)
Fifth, in addition to furniture formaldehyde smell
1. Two basins of salt water can be placed in the room, and the paint taste will be quickly eliminated. If it is the smell of paint emitted by wood furniture, it can be scrubbed with tea for several times, and the smell of paint will be eliminated faster.
2, you can go to the market to pick some high-tech deodorant cleaners, it can remove newly renovated rooms, new furniture and other harmful gases emitted. According to relevant sources, these deodorant cleaners are generally imported products that use ammonia compounds to chemically react with harmful substances, thereby serving as a deodorizing and cleaning agent. In the newly renovated room, the scented detergent can be poured into the plate, and the plate is placed in each room separately. Combined with the scrubbing scent method, bad smell can be effectively removed after several days.
3, to quickly remove the residual paint odor, citric acid soaked cotton balls, hanging in the room and wood furniture.
Common mistakes in formaldehyde removal I. Phytoremediation (useful only for minor pollution)
Chlorophytum is used. Flowers such as aloe and tiger-tailed orchid absorb indoor pollutants, but plants absorb carbon dioxide during photosynthesis during the day, release oxygen, absorb oxygen at night, and release carbon dioxide, which is harmful to the human body, especially for pollen and flowers, and plants that remove harmful gases. It is very limited and can only be used as an aid to the indoor environment. More specifically, it is only when the indoor air is slightly polluted that the plant can play a minor role in removing the odor. When indoor air pollution is serious, plants are powerless, and even plants themselves are killed by harmful gases. What's more, even if plants absorb harmful gases, are people not also absorbing harmful gases at the same time? Therefore, people should not completely hand over the task of controlling harmful gases to plants.

Second, bamboo charcoal adsorption (not recommended)
Bamboo charcoal is made from old bamboo by high temperature firing. Due to the loose texture and low hardness of bamboo charcoal, under the action of external forces, micropores are easily clogged and deformed, making it difficult to maintain the original shape. Formal activated carbon manufacturers do not use bamboo to produce activated carbon. In addition, the pore diameter of bamboo charcoal is larger than that of fruit shell charcoal and coal, which is not conducive to the adsorption of gas molecules. Even if adsorbed, it is easy to desorption. Treatment process: Many bamboo charcoal products sold on the market are only burnt at high temperature, and have not been activated. They can only be called charcoal. They can not be called activated carbon at all, and they are not air purification activated carbon. Consumers should be careful not to be misled by bamboo charcoal's misleading propaganda and low prices. Packing tightness: Air purification activated carbon is absolutely in the sealed package in transportation and sales process, because the contact air will begin to adsorb, and its saturation period is certain, so professional air purification activated carbon must be sealed and packaged. The bamboo charcoal product packaging, in order to reduce costs, simply do not care about the adsorption of the product itself, the general use of adhesive tape or simple binding, there is no sealing effect at all.
Third, formaldehyde scavenger (chemical removal is likely to produce secondary pollution)
The current wide variety of formaldehyde scavengers is dazzling. Some of them remove the formaldehyde by physical action, and others chemically remove formaldehyde. The experts on indoor decoration and indoor air monitoring pointed out that formaldehyde scavengers can only temporarily block the pollution sources and prevent the volatilization of formaldehyde in a short period of time. It is impossible to completely remove formaldehyde pollution. Because the formaldehyde pollution is persistent, it usually lasts 10 to 15 years. If the product is said to be eradicated once or completely eradicated, it is basically impossible unless the formaldehyde itself has been volatilized. Some spray-type formaldehyde scavenger is very convenient to use. Although it temporarily eliminates the odor in the air, it only forms a protective film on the outer layer of the pollution source. The source of formaldehyde volatilization has not been resolved. After this layer of protective film fails, formaldehyde still It will be released in large quantities to pollute indoor air; some formaldehyde scavengers are said to react chemically with formaldehyde, but if the formaldehyde scavenger does not fully react with formaldehyde, it may also generate other toxic substances that cause secondary pollution.
How to Remove Formaldehyde to Avoid Common Mistakes IV. Air Purifier (The Principle is the Same as Activated Carbon)
The air purifier is very expensive for a few months and the effect is significantly reduced. As long as you observe carefully, the expensive high-grade air purifier on the market is basically using activated carbon for deodorization and detoxification, and the air purifier is only effective when it is energized, and no electricity is effective! There is still no solution to formaldehyde contamination in enclosed spaces such as cabinets and drawers. So all air purifiers cannot be solved!

Fifth, photocatalyst (having a role but very limited)
It works, but its limitations are so great that the effect is not ideal. First of all, high-quality photocatalysts should be colorless and transparent. Most of them are white and milky on the market. High-quality photocatalysts are very expensive. Using it to remove pollution costs will be very high. Therefore, some management companies have replaced them with inferior ones. Excellent, of course, can not achieve results. According to Dr. Li of China's Photocatalysis Standards Committee, photocatalyst products in the market of 600 yuan/liter or less are not photocatalysts, and they must be large manufacturers to reduce costs to around 600 yuan. Photocatalysts are mainly used in building materials and textiles, and foreign pollution control industries do not use photocatalysts. At present, there are sprayed nano photocatalyst sterilization products on the market. This is an extremely irresponsible practice for related manufacturers. If you want to use photocatalyst particles in addition to formaldehyde, then you need millions of nanometer titanium oxide particles to capture formaldehyde. If people live in such an environment, they will certainly inhale photocatalyst particles. As a result, it is likely to cause human body damage. Great harm, this harm is even greater than formaldehyde harm.
Secondly, the photocatalyst is a catalyst that does not react by itself and can promote chemical reactions under certain conditions. This condition is very harsh and must be done under UV conditions. Then our house can guarantee 24 hours a day. Do you have UV rays? All photocatalysts that claim no light are simply not photocatalysts. It cannot be justified. And it is also harmful for the body to absorb ultraviolet light for too long. Some companies add additives to enhance the role of photocatalysts, which is a hidden danger of chemical pollution. Long-term use can cause corrosion in interiors and interior interiors, and may conflict with interior materials and interior equipment such as interior decoration materials and car membranes. In the end, photo-catalyst removal is only superficial, and a permanent solution is a passive method that cannot solve volatile sources at all. Just think: Contaminated volatile sources (such as furniture) continuously release contaminants (such as formaldehyde release period of up to 3 - 15 years), and photocatalyst is just like an air purifier, the release of the source of pollution, photocatalyst adsorption, decomposition point. The human body is also adsorbing polluting gases together with the photocatalyst, so it is also harmful to the human body.
Six, air clear agent (covering odor is not to remove odor)
This is impossible. The fragrance of the air freshener can only cover the odor of the decoration for a short period of time and cannot be removed. If smells are smelled after renovation, it is basically certain that formaldehyde, benzene, and other toxic gases in this space are excessive.
Seventh, folk circulation methods (do not work)
Put the tea residue, pomelo peel, onion slices, pineapple pieces, etc. in the newly decorated room or fumigate the whole room with white vinegar. I suggest not using some earthy methods to remove formaldehyde. The harm of formaldehyde is so great that placing things like onions and pineapples cannot solve the problem. In order to solve some of the harmful odors left by the decoration, many people take some “local methods” such as candlelight, pineapple, onion, and vinegar to absorb harmful gases in the room. In fact, this practice is unscientific. According to experts, formaldehyde is the main cause of damage to the human body after decoration, and candlelight is not able to absorb formaldehyde. Because the candle ingredients are mainly animal oils and aliphatic hydrocarbons, and formaldehyde is a less stable organic matter, it is evenly distributed throughout the room. When the candle burns, formaldehyde is converted into formic acid, and the oxygen in the room is reduced. In fact, it competes with people for oxygen. The reduction of oxygen is harmful to the human body. In addition, candles can also release lead, mercury, etc. that are harmful to the human body during combustion. There are also people who are not scientific enough to place cut pineapples in the house. Because pineapple can only play the role of covering indoor harmful gases, it can not eliminate indoor environmental pollution. This is tantamount to "arresting." Therefore, prevention and control of indoor environmental pollution, relying on the "earth approach" is the most undesirable, but cover up the odor, make people become numb, reduce vigilance and greater harm.


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