In 2006, Shanghai residents spent an average of 26 yuan per square meter of housing space to purify the indoor environment, which was the highest in the past years, but in exchange for more than 90% of the indoor air quality was not qualified. The data shows that among the households participating in the survey, the concentration of formaldehyde in 92 households exceeds the national standard, and the indoor air formaldehyde concentration of 34 households is actually three times the national limit standard!
At the "2007 China Shanghai First Indoor Environmental Purification International Forum" held in the city in early April this year, this group of data revealed by Yu Yulong, president of the Shanghai Indoor Environmental Purification Association, was really surprising.
Indoor air pollution, the respiratory tract is stimulated, the human body is uncomfortable; the other is the formation of respiratory diseases, liver diseases, lung diseases, emphysema, etc., and even lead to infertility and miscarriage of women; more serious can lead to low immunity, even Leukemia and various cancers. Office air pollution has also become one of the environmental issues that cannot be ignored.
So, how do you make the office air fresh and clean? Let us take a comprehensive look at the various methods of indoor air purification.
Source of pollution
How to effectively deal with indoor air pollution? Experts believe that the most important thing is to try to choose green decoration.
Decoration Materials.
According to reports, indoor air pollution mainly comes from construction and decoration materials. In many building materials and even floor-based stone, there are many harmful gases, such as formaldehyde, hydrazine, ammonia, etc.; in decorative materials, more Well-known such as: formaldehyde, benzene, toluene, xylene, etc. (automobiles, especially new cars, also have similar pollution).
Second is the impact of the outdoor atmospheric environment. In some areas where environmental pollution is relatively serious, the outdoor air quality is very poor. A large amount of harmful gases such as sulfur dioxide, soot, hydrogen sulfide, ammonia, dust and pollen penetrate into the room, seriously affecting the quality of indoor air.
Once again, the activities of indoor people are also an important aspect. The harmful gases such as carbon dioxide emitted by human breathing will accumulate in large quantities, which will cause air pollution. The metabolites of the human body will form suspended matter in the air, affecting the health of people's respiratory tract. Others such as smoking and pets will also affect indoor air. the quality of.
In addition, electrical appliances in the office, such as printers, copiers, microwave ovens, etc., can release electromagnetic radiation and some other gases emitted from the device materials.
Governance approach
1, open the window
Advantages: The "cheapest" way of purifying air allows indoor air to circulate and dilute harmful gases and odors indoors.
Disadvantages: It belongs to passive ventilation and is greatly affected by the structure of the building. The influence of changes in external air pressure does not guarantee the introduction of fresh air outside, and the amount of fresh air introduced is uncontrollable and time is uncontrollable. If it encounters wind, rain, sandstorm or outdoor heavy pollution, it cannot Ventilation for windowing.
The city has serious air pollution, and the air is full of dust, automobile exhaust and industrial dust. Opening windows allow outdoor dust, dust and harmful gases (automobile exhaust, industrial exhaust gas, etc.) to enter the room without any cover, endangering human health. Destroy the clean and comfortable environment of the room. In addition, outdoor noise pollution is serious, car noise on the road, construction noise in nearby construction sites, operating noise of large transportation vehicles and construction machinery, etc., will open the window to introduce pollution into the room, affecting people's rest and work.
2, placing plants
Advantages: It can directly reflect the air quality in the room, absorb some harmful gases to purify the air, and beautify the environment.
Disadvantages: passive absorption, no adsorption, effective removal of pollution area; various plants are only useful for a specific harmful gas (such as: rose, aloe, ivy, etc. can absorb hydrogen sulfide, benzene, phenol, trichloroethylene Such as harmful gases; arborvitae and cedar can produce negative ions, which are beneficial to people who often use computers, copiers, televisions, etc.), can not be all-inclusive.
3, placed fruit
Advantages: In certain cases, it can absorb certain harmful gases.
Disadvantages: short effective time, effective removal of pollution area; palliative treatment is not a cure, in most cases only one smell masks another odor; can not produce fresh air.
4, the use of negative ion generator
Advantages: It can increase the content of active oxygen in the air, and can play a role in dust reduction, sterilization, odor removal and decomposition of some chemical harmful gases.
Disadvantages: The effect is only good in a small space. The effect of space exceeding 20 square meters is not ideal. Moreover, the use of negative ion generator can not supplement oxygen-enriched fresh air, and can not improve air quality in essence.
5, ventilation fan
Advantages: Accelerate indoor air circulation.
Disadvantages: can only solve the local ventilation of the house, the ventilation effect is not ideal without opening the window.
6, household air duct central air conditioning
Disadvantages: There is a small amount of fresh air entering, but there is no fresh air purification, and there is no exhaust vent, indoor dirty air can not be quickly discharged outside; easy to send harmful bacteria on the air conditioning coil into the room, endangering human health; poor effect.
7, air purifier
Advantages: The overall treatment effect is better, and the effect of dust pollution in the air is more prominent.
Disadvantages: The effect of different management effects of the brand is large, and the effect on the treatment of chemical harmful gases is different due to different working principles.
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