Search百科 Air purification

Air Purification Catalog 123456 Catalog 1234567891011121314

Air purification is also known as air brightening treatment, which refers to the removal of harmful substances such as formaldehyde, benzene compounds, ammonia, radioactive stones, and radon from the air in daily life through equipment or engineering services and product processing. This achieves the effect of purifying the air within a certain space and protecting human health. It is one of the more common methods for treating装修pollution currently.

After our country experienced the "industrial revolution" of the 18th century and the "photochemical smog pollution" brought by the oil and automobile industries in the 19th century, modern people are now experiencing the third period of pollution marked by "". There may be thousands of types of indoor pollutants, and indoor pollution has also been called a special disaster in modern cities; internationally, indoor air pollution has been listed as the most harmful environmental factor to public health.

Currently, environmental pollution in our country has exceeded the warning line, especially air, water, carbon dust, radiation, and toxic substances that constantly harm our health. Indoor environmental pollution is even more severe; according to statistics from the China Consumers Association (March 15), complaints in recent years have gradually shifted from quality complaints to indoor environmental pollution complaints. A recent inspection by national health, construction, and environmental protection departments found that 68% of indoor decoration materials had toxic gas pollution, and these decorative materials could release over 300 kinds of volatile organic compounds, such as formaldehyde, trichloroethylene, benzene, and xylene, easily causing various diseases. Buildings themselves can also become sources of indoor air pollution. Another potential hazard of indoor air pollution—air conditioners—are becoming increasingly widespread in modern life, creating a closed-loop system indoors between humans, rooms, and air conditioners, making it very easy for bacteria, viruses, mold, and other microorganisms to proliferate extensively.

Data statistics from the China Environmental Protection Association show: 90% of children with leukemia have undergone luxury renovations at home, and 2.1 million children die each year due to luxury renovations; 80% of households exceed formaldehyde standards; 70% of miscarriages among pregnant women are related to environmental pollution; every year in our country, deaths caused by indoor environmental pollution amount to as high as 111,000 people, averaging 304 deaths per day. Indoor environmental pollution has become one of the serious killers affecting modern human health.

Indoor environmental protection needs attention, as people spend 70% of their lives indoors; modern individuals spend 80%~90% of their time indoors for living and working, so the quality of the indoor environment directly affects people's health. "A person can survive five weeks without food and five days without water, but cannot survive even five minutes without air." People often ask, in today's economically developed, scientifically advanced, and medically advanced era, why do unheard-of strange diseases keep appearing? Such as SARS, avian influenza; why are the number of people suffering from cancer and leukemia increasing and showing signs of younger onset? In addition to being related to people's diet and living habits, polluted air is also the main culprit of disease. The World Health Organization (WHO) has confirmed that formaldehyde causes cancer and induces childhood leukemia. Among urban children with leukemia, 90% of families underwent indoor renovation within the past year! A survey by the China Standardization Association shows that 68% of diseases are caused by indoor pollution! American experts detected that there are over 500 kinds of volatile organic compounds in indoor air, including more than 20 carcinogenic substances and over 200 pathogenic viruses. The main harmful substances include radon, formaldehyde, benzene, ammonia, esters, trichloroethylene, etc. The degree of indoor air pollution is 2-5 times worse than outdoor, sometimes reaching 100 times worse. Developed countries like the United States have categorized indoor air pollution as one of the five major environmental factors harming human health. A recent report by the Ann Arbor Environmental Group in the United States states that the concentration of harmful compounds in car air is 5 to 10 times higher than in homes and offices.

1、《》

2、《Control Specifications for Indoor Environmental Pollution in Civil Building Engineering》

3、《Limitations on Harmful Substances in Interior Decoration and Renovation Materials》

4、《Concentration Limits and Measurement Methods for Air Pollutants in Vehicles》

5、《Implementation Plan for National Environmental Friendly Automobiles》

6、《》

7、《Antibacterial, Sterilizing, and Purification Functions of Household and Similar Purpose Appliances》 Formaldehyde

Formaldehyde mainly comes from indoor decoration and . Plywood, blockboard, medium-density fiberboard, and particleboard used for indoor decoration, processed using urea-formaldehyde resin and phenolic resin adhesives, whose main raw materials are formaldehyde, urea, phenol, and other additives, residual unreacted harmful substances like formaldehyde will gradually release into the surrounding environment, forming the main body of formaldehyde in indoor air, thus causing indoor air pollution. Some furniture manufacturers use substandard artificial boards to pursue profits, and when bonding veneer materials, they use inferior glue, leading to extremely high volatile organic compound content. Research from Yokohama National University in Japan shows that the release period of formaldehyde in artificial boards is generally 3-15 years. New furniture, wall and floor decoration all require adhesive. Wherever large amounts of adhesive are used, formaldehyde will be released. Moreover, wallpaper, , plastic floor tiles, foam plastics, coatings, paints, and thinners also contain a certain amount of formaldehyde.

Formaldehyde is a colorless gas with a pungent odor. It is most sensitive to human health through olfactory and stimulation effects, especially on the inner membrane of the eyes, throat, and skin. When the formaldehyde content in the air reaches 0.1mg/m3, it produces an unpleasant smell and discomfort.

(America's Environmental Protection Agency Indoor Air Quality Department believes that people exposed long-term to formaldehyde levels reaching 0.1ppm indoors will feel uncomfortable); reaching 0.5mg/m3 can irritate the eyes causing tearing; 0.6mg/m3 causes throat discomfort or pain; as the concentration increases, it can cause nausea, vomiting, coughing, chest tightness, shortness of breath; exceeding 6.5mg/m3 can cause pneumonia, pulmonary edema damage, and even death. Long-term exposure to low concentrations of formaldehyde (0.017mg/m3～0.068mg/m3) can cause chronic respiratory diseases, menstrual disorders in women, pregnancy syndrome, reduced newborn constitution, chromosomal abnormalities, and even nasopharyngeal cancer. High concentrations of formaldehyde are toxic to the nervous system, immune system, liver, etc., and long-term exposure to high concentrations of formaldehyde can lead to acute mental depression. Formaldehyde also has pathogenic and carcinogenic effects. The International Cancer Research Institute has suggested listing it as a suspected carcinogen. Benzene Compounds

Benzene compounds are present in large quantities in organic solvents of various building and decoration materials, such as additives and diluents in various paints and coatings and some waterproof materials. Inferior furniture also releases benzene compounds and other volatile organic compounds. Wallpapers, vinyl floors, plywood, and paint are important sources of aromatic hydrocarbon compound pollution in indoor air. These building and decoration materials continuously release harmful gases indoors, with a release time of up to one year; many decorative materials sold on the market also release harmful gases after use. Benzene is a colorless liquid with a special aromatic smell, one type of indoor volatile organic compound. Inhalation of high concentrations of benzene vapor in a short period can cause acute benzene poisoning primarily characterized by central nervous system depression, with mild cases showing symptoms such as dizziness, headache, nausea, chest tightness, fatigue, and confusion: severe cases may result in coma, or even respiratory and circulatory failure leading to death. Long-term exposure to low concentrations of benzene compounds can cause chronic poisoning, manifesting as symptoms such as dizziness, insomnia, mental lethargy, and memory loss indicative of neurasthenia, along with skin, eye, and upper respiratory tract irritation, decreased platelets and white blood cells, and severe cases may lead to bone marrow hematopoietic dysfunction, impacting reproductive function. Benzene has been confirmed by experts as a serious carcinogen. Ammonia

Ammonia mainly comes from: especially during winter construction processes, where urea and ammonia water are added as main ingredients. These additives containing large amounts of ammonia substances are slowly released as ammonia gas from walls as environmental factors like temperature and humidity change, significantly increasing ammonia concentration in indoor air. Additionally, indoor ammonia can also come from additives and whitening agents in indoor decorative materials. However, this type of pollution dissipates quickly and does not accumulate in large quantities in the air for a long time, posing relatively less harm to human health. Ammonia is a colorless gas with a strong irritating odor. As an alkaline substance, it corrodes and irritates tissues it comes into contact with. Ammonia absorbs moisture from tissues, denatures tissue proteins, saponifies tissue fats, disrupts cell membrane structure, and weakens the body's resistance to disease. Long-term exposure to low concentrations of ammonia can cause mild throat irritation and hoarseness, while severe cases may lead to laryngeal edema, laryngospasm, and even difficulty breathing, pulmonary edema, coma, and shock. At high concentrations, ammonia not only causes corrosive effects but can also cause cardiac arrest and respiratory cessation through reflex actions of the trigeminal nerve endings. Radon

In a 1982 report by the United Nations Scientific Committee on the Effects of Atomic Radiation, building materials were identified as the primary source of indoor radon. For example, granite, bricks, sand, cement, and gypsum, especially natural stones containing radioactive elements, easily release radon. Due to differences in origin, geological structure, and formation age, the radioactivity of various stones varies. The National Quality Supervision Bureau once conducted supervisory inspections on natural stones available in the market. From the test results, granite was found to have a higher level of excess and higher radioactivity. Radon has been confirmed by the International Cancer Research Institute as a human carcinogen, ranking second among lung cancer factors after smoking. Electromagnetic radiation can affect the human nervous, reproductive, cardiovascular, immune systems, and eyes. Natural stones also have a certain level of radioactivity, mainly from the decay products of radium, thorium, and potassium, causing both internal and external radiation hazards. Total Volatile Organic Compounds

Total volatile organic compounds (TVOC) in indoor air mainly come from paints, water-based coatings, adhesives, cosmetics, detergents, artificial boards, wallpapers, carpets, etc. Currently, several thousand types of TVOC have been discovered indoors, divided into eight categories: alkanes, aromatics, alkenes, halogenated alkenes, esters, aldehydes, ketones, and others. TVOC has significant effects on the human body; its high concentration directly stimulates the sense of smell and other organs, causing allergic reactions, neurological effects, etc. Asbestos

Ceilings, pipeline insulation, and partition materials in some old residences are mostly asbestos products; some building materials and interior decoration materials, such as asbestos cement and vinyl flooring, release large amounts of fine asbestos fibers into the air when repaired, cut, or reshaped. Asbestos cement pipelines used for water conveyance can also cause drinking water contamination. Asbestos itself is non-toxic, but its greatest hazard comes from its fibers. These fibers are very fine and almost invisible to the naked eye. Once inhaled into the human body, they adhere and deposit in the lungs, causing lung diseases such as asbestosis, pleural and peritoneal mesothelioma, etc.; these lung diseases often have long latency periods. Therefore, asbestos has been confirmed by the International Cancer Research Center as a carcinogen.

1. O2 and NO2 damage the respiratory tract. CO causes acute poisoning, and its chronic effects damage the myocardium and central nervous system. Particles contain large amounts of polycyclic aromatic hydrocarbons (PAHs), many of which are carcinogens. For example, some metabolic intermediates of 3,4-benzopyrene have strong carcinogenic properties. Since P. Potter discovered in 1775 that British chimney sweeps were prone to scrotal cancer, people gradually realized that coal tar contains carcinogens. Research in the 1980s on the high incidence of lung cancer in Xuanwei County, Yunnan Province, proved that the smoke from local coal burning contained large amounts of carcinogenic PAHs. Another epidemiological study found that one reason for lung cancer among farmers in non-high-risk areas in northern China was winter home heating with honeycomb coal without installing chimneys. Dichloromethane extracts from particulates produced by liquefied petroleum gas combustion contain nitro-polycyclic aromatic hydrocarbons, which are strong mutagens.

2. Some regions' coal contains more fluorine, arsenic, and other inorganic pollutants, which pollute indoor air and food when burned, causing fluoride or arsenic poisoning upon inhalation or ingestion.

3. Cooking produces grease fumes that not only hinder general hygiene but also importantly contain mutagens.

4. Indoor environments that are not clean allow allergenic organisms to thrive. The main indoor allergenic organisms are fungi and dust mites. They mainly originate from poultry, dust, etc. Fungi grow well with just a little moisture and organic matter. For example, they can grow on glass surfaces, inside household appliances, in wall cracks, on wooden boards, and even on the caps of high-grade gasoline barrels in jet aircraft. Dust mites prefer humid warmth and mainly grow in dust, mattresses, pillows, sofas, clothes, food, etc. Both live and dead mites, as well as their shed skins or excrement, are antigenic and can cause asthma or urticaria.

5. Humans spread pathogens. Patients with respiratory infectious diseases can transmit pathogens to others through exhaled air, sneezing, coughing, phlegm, and nasal discharge.

6. Instruments and equipment used indoors, such as photocopiers and electrostatic precipitators, produce ozone (O3). O3 is a strong oxidant that irritates the respiratory tract, particularly damaging alveoli.

7. Electrical appliances produce electromagnetic radiation. If the radiation intensity is high, it can cause headaches, sleepiness, weakness, and memory decline.

8. Dust, combustion particles, droplets, and other pollutants in indoor air combine with light ions in the air to form heavy ions. The former can remain in polluted air for only one minute, while the latter can last for an hour, thereby enhancing the adverse effects of positive heavy ions: headaches, irritability, fatigue, increased blood pressure, listlessness, attention decline, reduced work capacity, insomnia, etc.

9. Direct emission of harmful factors from indoor items. Many objects and items indoors inherently contain various harmful factors, which are released into the air and cause harm. These mainly come from the following aspects:

10. Materials. Certain cement, bricks, lime, and other building materials inherently contain radioactive radium. After buildings are completed, radon (222Rn) and its progeny are released into indoor air, entering the respiratory tract and causing lung cancer. Outdoor air contains about 10 Bq/m3 of radon, while indoor air severely polluted can exceed dozens of times that. In the United States, the excess death toll from lung cancer caused by radon and its progeny is between 10,000 and 20,000.

11. Urea-formaldehyde foam insulation material (UFFI) houses can release large amounts of formaldehyde, sometimes exceeding 10 mg/m3. Formaldehyde has a clear stimulating effect, greatly irritating the eyes, throat, and trachea; it forms allergens in the body, causing bronchial asthma and skin allergies; it damages the liver, especially for those with a history of hepatitis who are prone to relapse after moving into UFFI mobile homes. Long-term inhalation of low-concentration formaldehyde can cause headaches, dizziness, nausea, breathing difficulties, reduced lung function, neurasthenia, and affected immune function. Animal experiments have induced nasopharyngeal cancer. No epidemiological evidence of carcinogenesis in humans has yet been seen.

12. Building materials containing asbestos release asbestos fibers. Asbestos causes lung cancer and pleural and peritoneal mesothelioma.

13. Decorative items and furnishings. Common ones include vinyl flooring, floor tiles, synthetic carpets, plastic wallpapers, insulating materials, urea-formaldehyde resin adhesives, and furniture made from fiberboards and plywood bonded with these adhesives, all of which release multiple volatile organic compounds, mainly formaldehyde. In a newly built high-end hotel in Shenyang, China, the formaldehyde concentration reached as high as 1.11 mg/m3, and in ordinary residential rooms after new decoration, it was around 0.17 mg/m3, gradually decreasing afterward. Additionally, some products can release benzene, toluene, xylene, CS2, chloroform, trichloroethylene, chlorobenzene, and over a hundred other volatile organic compounds. Some of these can damage the liver, kidneys, bone marrow, blood, nervous system, immune system, etc., and some can even cause sensitization and cancer.

14. Daily living and office supplies. For example, cosmetics, detergents, disinfectants, insecticides, textiles, inks, paints, dyes, and coatings all emit formaldehyde and other types of volatile organic compounds and surfactants. These can affect the human body through the respiratory tract and skin.

According to the World Health Organization, the main symptoms of indoor environmental pollution include:

① Irritation of the eyes, especially the cornea, nasal mucosa, and throat mucosa;

② Dry lips and other mucous membranes;

③ Frequent red spots, hives, eczema, etc., on the skin;

④ Easy fatigue;

⑤ Prone to headaches and respiratory infections;

⑥ Frequent feelings of chest tightness and suffocation;

⑦ Frequent occurrence of unexplained allergies;

⑧ Frequent feelings of dizziness, nausea, and vomiting.

If these symptoms frequently occur after moving into a new house, it's necessary to check your indoor environment.

There are many methods for air purification, which can be divided into physical adsorption and chemical decomposition based on purification principles. Micro-electrification Photo Degradation Air Purification Technology

Micro-electrification photo degradation air purification technology is the latest high-end technology in the global air purification field. It generates a large amount of hydroxyl radicals, oxygen radicals, negative ions, and cold light sources through a micro-electrification generator. Cold light sources, under the action of various rare metal catalysts, produce a huge amount of purification ions such as hydroxyl radicals and negative ions. These purification ions form ion clouds in a very short time, undergo a series of chain reactions with formaldehyde, benzene, odors, VOCs, and other harmful pollutants, ultimately generating carbon dioxide and water. Simultaneously, it can efficiently sterilize, reducing indoor bacterial concentration, preventing cross-infection of viruses. Charged ions can adsorb suspended particles dozens of times their own weight, settling down by gravity, thereby removing suspended colloids from the air to achieve the purpose of air purification. This unique micro-electrification photo degradation air purification technology is widely applicable to printing, medical care, offices, food, large public places, and other fields, achieving very significant results. Composite Air Pollution Purification Liquid

A single substance simultaneously purifies multiple harmful gases, is safe, non-toxic, harmless, and has received free support from the National Ministry of Science and Technology Innovation Fund. It acts on pollution sources, thoroughly solving formaldehyde pollution problems. Formaldehyde Removal Agent

The formaldehyde removal agent targets formaldehyde pollution and acts on pollution sources, basically resolving formaldehyde pollution issues. It is a very good product with a single target. Air Purifier

An air purifier not only humidifies indoor air but also plays an excellent role in purifying indoor air under slight pollution conditions. Photocatalyst

After nearly ten years of development, photocatalysts are currently the most mature and effective method. Like photosynthesis, it uses natural light energy to catalytically decompose formaldehyde, benzene, and other harmful gases, and the main component of photocatalysts, titanium dioxide, is very safe, allowing trace amounts to be added to food and cosmetics.

1. Feeling suffocated, nauseous, or even dizzy and disoriented upon waking up every morning;

2. Family members frequently catching colds;

3. Although you don't smoke and rarely come into contact with smoking environments, you often feel throat discomfort, foreign body sensation, and breathing difficulties;

4. Children in the family often cough, sneeze, and have weakened immunity, and children are reluctant to return home after new renovations;

5. Family members frequently experience skin allergies, and these are cluster outbreaks;

6. Family members share a common illness