Nowadays, the home building materials industry, such as wardrobes with increasingly hot environmental protection topics, is undergoing a new round of market tests. At the PM2.5 sub-forum of the 2013 annual meeting of the Guiyang International Forum on Ecological Civilization, experts from the Chinese Academy of Engineering and the China Academy of Environmental Sciences said that China has become the most polluted area in the world. But in fact, the pollution caused by interior decoration is far more serious than outdoor pollution such as PM2.5.
Last May, according to the survey conducted by the China Indoor Decoration Association Environmental Testing Center, the number of deaths caused by indoor air pollution in China reached 111,000 per year, with an average of 304 deaths per day, equivalent to the number of people killed in car accidents every day in the country. In fact, indoor air pollution is often 2 to 3 times more severe than outdoor air pollution, and in some cases, even more than 100 times. About 300 kinds of pollutants can be detected indoors, and 68% of human diseases are related to indoor air pollution. These pollutants mainly come from activities such as building renovation.
Zhou Chunliang, chief of the Indoor Air and Decorative Materials Monitoring Section of the Hunan Provincial Center for Disease Control, analyzed that the main sources of indoor air pollution are interior decoration materials and furniture. Paints, plywood, particleboard, foam fillers, interior wall coatings, plastic veneers, adhesives and other materials contain organic volatiles such as formaldehyde, benzene, ammonia, toluene, etc. These organic volatiles release a large amount of toxic gases and are persistent. freed. The continuous evaporation cycle of formaldehyde generally lasts for 3 to 8 years. The carcinogenic effect of formaldehyde mainly depends on the concentration. High concentration of formaldehyde is toxic to the nervous system, immune system, liver, etc., and it is more teratogenic and carcinogenic.
Then, why are formaldehyde, benzene and other pollutants exceeding the standard in the industry? The main reason is that most of China's building materials market is occupied by some small enterprises, and small enterprises are considering product standards such as raw materials and finished products for cost reduction. The control ability is weak, which makes a large number of unqualified decoration materials flood the market, resulting in decoration pollution. In addition, there are certain loopholes in the testing process of relevant departments in China, which is one of the reasons for enterprises to take risks. A staff member of the Beijing Municipal Bureau of Quality and Technical Supervision said that a large number of unqualified products have entered the market, which is seriously related to the local government's local protection thinking. Many unqualified building materials are flowing into the market under the eyes of the regulatory authorities.
According to a survey, 80% of the surveyed owners only pay attention to the purchase of the main materials, and the accessories are often purchased by the decoration company. The decoration company knows more about the building materials market. Although they know what materials meet environmental protection standards, they often try to buy cheap, unqualified accessories because they often use profit as the yardstick. Although the owner and the decoration company agreed on the brand and model of the main material when signing the contract, there are different levels of reduction in the procurement. Eventually, indoor pollution exceeded the standard.
As the indoor environment is receiving more and more attention, after the home decoration, some owners who advocate rights protection will also find relevant institutions to test the indoor air quality. However, some unqualified civil environmental testing centers took the opportunity to make money and mess up reports to fool the owners. For example, indoor testing is divided into two types, namely basic testing and authoritative testing. Most testing companies that do not have the qualifications and equipment for testing can only perform basic testing but issue so-called “authoritative reportsâ€. To a certain extent, this has erroneously led people to judge the quality of the decoration. Living in a house full of formaldehyde, I thought that I was very healthy.
After efforts, China's indoor air quality standard system has basically taken shape. However, in the process of formulating the IAQ standard, there is a lack of certain basic data, which are mainly reflected in the parameters such as the release of harmful substances in the building and decoration materials, the release period, and the relationship between them; the basic toxicological data and pollution of the pollutants. Large-scale investigation of the situation, product hazardous substance content and process level. At present, there is no relevant standard specially formulated for residential ventilation. Only in the "House Design Code" (GB50096-1999), there is a minimum area for doors and windows (door and window decoration renderings) and kitchen (kitchen decoration renderings), bathroom Set basic requirements related to ventilation, such as vertical ducts that can be connected to local exhaust units. Therefore, there is no specific guidance basis from the design of buildings, the development of ventilation products to the ventilation of the reasonable accommodation of the residents.
As the “last piece of cake†in the building materials and home furnishing industry, the wardrobe industry should also be improved in time, and integrate with the ecological environment as much as possible to become a truly “cakeâ€.
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