Indoor air pollution control method
1, nano-photocatalyst method
The principle of nanometer photocatalyst in pollution control is that nanometer photocatalyst can continuously produce a large number of oxygen ion free radicals and hydroxyl free radicals with strong activity under light irradiation, and these free radicals can decompose pollutants such as formaldehyde, benzene, ammonia and pathogenic microorganisms such as bacteria.
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This method can effectively decompose and reduce the concentration of indoor decoration pollutants, but it cannot work under the condition of no light, and it is difficult to deal with the main source of formaldehyde pollution-furniture (especially enclosed furniture); At the same time, it takes a long time to control the decoration pollution by this process, especially in the case of serious exceeding the standard.
2. Activated carbon adsorption
● Principle: Using the high specific surface area of activated carbon or carbon fiber to chemically adsorb harmful chemical gases in the air, so as to achieve the purpose of purifying chemical pollutants, which has a certain effect on purifying indoor volatile organic compounds and odors.
● Use: put in a polluted environment.
● Advantages: It is simple to use and can adsorb some pollutants in a short time (5-7 days), mainly for volatile organic compounds and odors. Physical adsorption, the product itself has no secondary pollution.
● Disadvantages: When the temperature and wind speed rise to a certain extent, the adsorbed pollutants may be released.
Enter the breathing space again. Activated carbon adsorption has no purification effect on bacteria and other microorganisms. Activated carbon can easily reach adsorption saturation. When the adsorption reaches saturation and no longer has adsorption capacity, the filter material must be replaced. If it is not replaced in time, the pollutants it absorbs will be released at any time, causing secondary pollution. After the active adsorption is saturated, it needs to be activated before it can be used again. ● Suggestion: It can be used in places with relatively concentrated pollution to solve some pollution problems.
3. Formaldehyde scavenger/formaldehyde scavenger
● Principle: Eliminating formaldehyde through chemical reaction can reduce and reduce formaldehyde pollution in indoor air to some extent.
● Usage: When using, formaldehyde scavenger (strong oxidizing) is generally sprayed in the air or on the front and back of wood raw materials and unpainted surfaces such as furniture inner walls, wooden board gaps and drawers. When in use, formaldehyde scavenger (strong and weak) is generally sprayed on the surface of furniture.
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● Advantages: Eliminating formaldehyde through chemical reaction can reduce formaldehyde pollution in indoor air to a certain extent in a short time. In addition to formaldehyde of wood products (especially bare and dew-forbidden wood products) has obvious effect in a short time.
● Disadvantages: Formaldehyde scavenger only aims at eliminating formaldehyde, and has no effect on benzene, ammonia, TVOC, bacteria, etc.
There is nothing to do with the harmful gases that are continuously discharged in the later period. Many formaldehyde scavengers are highly oxidizing, which will cause damage to leather, paint film and other surfaces. Many products have certain toxicity, which is a limited and simple emergency treatment method, and can not achieve the purpose of truly and permanently removing formaldehyde. ● Suggestion: It can be used in places with concentrated formaldehyde and serious pollution, such as cabinets, which can reduce the total amount of formaldehyde pollution and have obvious effect in a short time. Valid for 7-60 days in different environments.
4. Air purifier
● Principle: The motor installed inside the machine drives the impeller to make the indoor air flow, and the particles, suspended solids and dust in the air are filtered by the filtering system at the inlet and outlet of the machine. The negative ion generator located at the air outlet blows clean air with a certain concentration of negative ions from the air outlet, which can effectively improve the indoor air.
● Use: Use in the whole polluted space.
● Advantages: It can filter and purify the smoke smell and tiny dust particles in the air in a small range and in a short time. The new air purifier has a certain effect on the toxic and harmful gases in the air.
● Disadvantages: There are many kinds of purifiers, mainly chemical decomposition and ozone decomposition, but these all need continuous power consumption. Because pollutants are constantly released, once the power supply is turned off, the concentration of pollutants will inevitably continue to rise. In addition, the purifier can't treat the interior of the furniture, and it releases a high concentration of fragrance in the space, which affects the sensitivity of the sense of smell to other smells.
5, negative ion purification
● Principle: When negative ions combine with germ cells in the air, the energy inside the cells is transferred, and the structure changes, which leads to their death, so that inhaled particles such as dust and pollen floating in the air gather and naturally settle, thus achieving the purpose of purifying the air.
● Use: put in a polluted environment.
● Advantages: High-voltage discharge and other technologies make the air generate negative ions, which combine with particulate pollutants in the air to make tiny particles gather and settle, which has a certain effect on purifying the air. It is relatively simple to use.
● Disadvantages: Disadvantages are slow air purification process and incomplete disinfection. Negative ions have little effect on chemical pollutants, and are easy to accumulate dust and damage electrical appliances.
6. Ozone purification
● Principle: There are three oxygen atoms in ozone, which is extremely unstable and easy to release active oxygen. Reactive oxygen species (ROS) is highly oxidizing and can react with harmful gases in the air quickly, thus purifying the air.
● Use: Use in the whole polluted space.
Advantages: Ozone is a strong oxidant, which can directly oxidize some organic substances in the air into carbon dioxide and water, and has the function of purifying organic substances. The effect is obvious in a short time.
Disadvantages: When used for disinfection, relatively high concentration is required. When the ozone concentration reaches above 0. 1PPM, ozone will play a role in sterilization and deodorization. However, when it reaches 0. 15PPM, ozone itself will give off a strong stench, and its use environment should not exceed 30℃, otherwise it may cause cancer. The harsh use conditions limit its popularization in civil environment. Ozone itself is toxic and needs to be controlled. It is not completely suitable for inhabited environment. Breathing high-concentration ozone air for a long time will lead to shock, emphysema, pulmonary fibrosis and other diseases. In addition, ozone has adverse effects on rubber products, paper and fabrics. Generally, a treatment can last for 7- 10 days, and the harmful gases discharged continuously in the later period have nothing to do with it.
● Suggestion: This method can be used for short-term treatment of the whole space pollution.
7. Air freshener
● Principle: A high concentration of fragrance is released in the space, which affects the sensitivity of the sense of smell to other smells.
● Usage: Spray directly in the air.
● Advantages: the product contains flavors and fragrances, which can cover up the odor from the sense of smell and solve the problem of air odor in a short time and in a small scope.
● Disadvantages: It only plays the role of masking odor and has no effect on pollutants, bacteria, etc. The air freshener itself has low toxicity, especially the inferior air freshener contains harmful substances.
8. Plants purify indoor air
Roses and roses can absorb sulfur dioxide; Osmanthus fragrans has the function of vacuuming; Peppermint has bactericidal effect; Ivy and cycads absorb benzene; Removal of trichloroethylene by Evergreen and Daisy: Taro argentea, Chlorophytum, Aloe Vera and Eupatorium odoratum absorb formaldehyde. The air purification effect of plants is related to the number of plants placed indoors, so it is difficult for ordinary families to place a large number of the same plant for a long time.
Editor's summary: I am here to introduce the relevant contents of indoor air pollution control methods. I hope this article is helpful to you. If you have other questions or want to know other decoration knowledge, then pay attention to our channel!
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● Principle: The motor installed inside the machine drives the impeller to make the indoor air flow, and the particles, suspended solids and dust in the air are filtered by the filtering system at the inlet and outlet of the machine. The negative ion generator located at the air outlet blows clean air with a certain concentration of negative ions from the air outlet, which can effectively improve the indoor air.
● Use: Use in the whole polluted space.
● Advantages: It can filter and purify the smoke smell and tiny dust particles in the air in a small range and in a short time. The new air purifier has a certain effect on the toxic and harmful gases in the air.
● Disadvantages: There are many kinds of purifiers, mainly chemical decomposition and ozone decomposition, but these all need continuous power consumption. Because pollutants are constantly released, once the power supply is turned off, the concentration of pollutants will inevitably continue to rise. In addition, the purifier can't treat the interior of the furniture, and it releases a high concentration of fragrance in the space, which affects the sensitivity of the sense of smell to other smells.
5, negative ion purification
● Principle: When negative ions combine with germ cells in the air, the energy inside the cells is transferred, and the structure changes, which leads to their death, so that inhaled particles such as dust and pollen floating in the air gather and naturally settle, thus achieving the purpose of purifying the air.
● Use: put in a polluted environment.
● Advantages: High-voltage discharge and other technologies make the air generate negative ions, which combine with particulate pollutants in the air to make tiny particles gather and settle, which has a certain effect on purifying the air. It is relatively simple to use.
● Disadvantages: Disadvantages are slow air purification process and incomplete disinfection. Negative ions have little effect on chemical pollutants, and are easy to accumulate dust and damage electrical appliances.
6. Ozone purification
● Principle: There are three oxygen atoms in ozone, which is extremely unstable and easy to release active oxygen. Reactive oxygen species (ROS) is highly oxidizing and can react with harmful gases in the air quickly, thus purifying the air.
● Use: Use in the whole polluted space.
Advantages: Ozone is a strong oxidant, which can directly oxidize some organic substances in the air into carbon dioxide and water, and has the function of purifying organic substances. The effect is obvious in a short time.
Disadvantages: When used for disinfection, relatively high concentration is required. When the ozone concentration reaches above 0. 1PPM, ozone will play a role in sterilization and deodorization. However, when it reaches 0. 15PPM, ozone itself will give off a strong stench, and its use environment should not exceed 30℃, otherwise it may cause cancer. The harsh use conditions limit its popularization in civil environment. Ozone itself is toxic and needs to be controlled. It is not completely suitable for inhabited environment. Breathing high-concentration ozone air for a long time can lead to shock, emphysema and pulmonary fibrosis. In addition, ozone has adverse effects on rubber products, paper and fabrics. Generally, a treatment can last for 7- 10 days, and the harmful gases discharged continuously in the later period have nothing to do with it.
● Suggestion: This method can be used for short-term treatment of the whole space pollution.
7. Air freshener
● Principle: A high concentration of fragrance is released in the space, which affects the sensitivity of the sense of smell to other smells.
● Usage: Spray directly in the air.
● Advantages: the product contains flavors and fragrances, which can cover up the odor from the sense of smell and solve the problem of air odor in a short time and in a small scope.
● Disadvantages: It only plays the role of masking odor and has no effect on pollutants, bacteria, etc. The air freshener itself has low toxicity, especially the inferior air freshener contains harmful substances.
8. Plants purify indoor air
Roses and roses can absorb sulfur dioxide; Osmanthus fragrans has the function of vacuuming; Peppermint has bactericidal effect; Ivy and cycads absorb benzene; Removal of trichloroethylene by Evergreen and Daisy: Taro argentea, Chlorophytum, Aloe Vera and Eupatorium odoratum absorb formaldehyde. The air purification effect of plants is related to the number of plants placed indoors, so it is difficult for ordinary families to place a large number of the same plant for a long time.
Editor's summary: I am here to introduce the relevant contents of indoor air pollution control methods. I hope this article is helpful to you. If you have other questions or want to know other decoration knowledge, then pay attention to our channel!