How much does it cost to remove formaldehyde from a hotel and what are the methods?

Have you ever noticed such a problem when living in a hotel? There is a very unpleasant smell, especially if it is a newly opened hotel. I will tell you that this is the smell of formaldehyde. You may also find that it is slightly more upscale. The hotel meaning is relatively clear, especially for those small hotels that do not meet the standards. So everyone has to be picky when looking for a hotel to stay in. Formaldehyde removal in hotels is also a necessary procedure, because a large number of customers come to stay every day. If the formaldehyde standard in the room is too high, it will directly harm the physical and mental health of the customers. Because how much does it cost to remove formaldehyde in a hotel, and what effective methods can be used to do it?

How much does it cost to remove formaldehyde in a hotel?

The cost of formaldehyde removal treatment is generally based on the indoor area. Indoor ventilation environment, excessive formaldehyde, etc. The industry price is generally 40-80 yuan per square meter. (Price source is from the Internet, for reference only)

Removal method

1. Ventilation method

There is no need to explain the ventilation method too much. It means that harmful substances will be removed through the flow of air. Discharging the gas outdoors is a simple and effective method. The only drawback is that the formaldehyde release cycle is long, usually three to fifteen years. It is obviously unrealistic to leave a new house empty for more than three years after renovation. Therefore, ventilation method alone cannot meet the requirements.

2. Plant-source air purification liquid

AQ air purification spray plant-source biological preparation uses biotechnology to refine and extract its components from Italian black poplar, mountain locust, pink flower neem and other plants. The active ingredients are sesquiterpene polyesters and alcohol compounds, and are formulated into a plant-derived compound purification liquid with an exclusive patented formula. The bactericidal effect is significant and long-lasting. It has been tested by authoritative departments such as the Hong Kong Polytechnic University and is effective against Salmonella, Shigella, and pathogenic bacteria. The killing rate of various common bacteria, fungi and viruses such as Escherichia coli, Vibrio cholerae, Staphylococcus aureus, Legionella, SARS coronavirus, human influenza virus, avian influenza virus, etc. within 60 minutes is as high as 99.9%. And effectively decompose formaldehyde, benzene, TVOC and other toxic gases. Decomposes instantly without secondary pollution. Can be eaten or eaten.

3. Formaldehyde scavenger or formaldehyde-dissolving enzyme

Formaldehyde scavenger "removes" formaldehyde by chemical reaction. The essence of this method is to reduce the toxicity of the target substance or Converted into non-toxic substances. Formaldehyde can be oxidized to formic acid or reduced to methanol. Although the toxicity and irritation of these two substances are lower than those of formaldehyde, their toxicity still exists. For example, some highly oxidizing formaldehyde scavengers can oxidize formaldehyde, but they are easy to decompose. Spraying on wooden boards will damage the wood and lose their effectiveness within a few hours. It is impossible to achieve "one spray and forever." Moreover, high-concentration scavengers sprayed in the air will cause new pollution hazards to people. Other oxidants and reducing agents cannot effectively remove formaldehyde, and will introduce similar new pollution.

4. Activated carbon adsorption

Mr. Li from Nankai University, who specializes in activated carbon, told reporters that activated carbon is indeed effective in the early stages of use because the pores have adsorption potential and rely on carbon molecules to interact with the adsorbed ones. Formed by the attraction of molecules, the smaller the pore size, the stronger the adsorption potential. In addition, according to the theory of molecular motion, all objects are composed of molecules or atoms, with gaps between them. At the same time, they are in a state of never-ending and irregular thermal motion, and molecules collide with each other frequently. According to relevant data, under standard conditions, the free movement speed of formaldehyde molecules is about 450 meters/second, and a formaldehyde molecule collides with other molecules 109 times per second. At this time, if the diameter of the colliding molecule matches the pores of the activated carbon, it will be adsorbed. Whether it is traditional activated carbon or modified activated carbon that has been fried a lot, its adsorption capacity is limited due to its large pores.

The maximum temperature of sunlight is only about 50 degrees Celsius, and it can only evaporate water. The pollutants adsorbed in activated carbon cannot be completely volatilized, and the adsorption function of the carbon cannot be completely restored. Therefore, exposure to sunlight is more about removing the moisture in activated carbon. Its adsorption properties cannot be restored.

Activated carbon generally has a certain adsorption effect on benzene, but the adsorption effect on formaldehyde is not obvious. Generally, the adsorption capacity of activated carbon will weaken after one month.