Renovation of several pollutants to control
With the rapid development of our country’s economy, people’s economic income and consumer spending are also growing at a rapid rate. The standard of living and quality of life have been greatly improved, and the desire and expectations for improving work, life, and living environment have also become stronger. We hope to have a comfortable, clean, modern and fashionable work and living space. Therefore, in recent years, the standards and grades of house decoration have been continuously improved and are on the rise.
1 The main types of pollutants and their sources
The indoor environmental pollutants are mainly caused by the pollution of the outdoor atmosphere and geological environment, the pollution of indoor building and decoration materials and the release of furniture, the pollution of cooking and combustion products, the metabolism of human body, and the pollution of volatile components of various domestic wastes. After the project is completed and delivered for use, indoor environmental pollution caused by people's various activities and the destruction of the outdoor atmospheric environment is not controllable during the construction phase. Through the analysis of experts and scholars. At present, there are hundreds of toxic and hazardous substances detected, and approximately 68% of human diseases are related to indoor pollution, especially cesium, free formaldehyde, ammonia, benzene, and total volatile organic compounds (TVOC). Contaminants are the most harmful to humans and are often detected. According to relevant reports, among them, ruthenium and benzene compounds have been identified by the World Health Organization (WHO) as a strong carcinogen, and formaldehyde has been identified by the WHO as a suspected carcinogenic and teratogenic substance. Therefore, this article lists these pollutants as the object of control.
1.1 æ°¡
Radon is produced by the decay of radioactive element radium, which is colorless and odorless. With radioactive inert gas. It is the only natural radioactive gas in the natural world. It exists in various ores, rocks, and soils in nature. It is often released during mining and construction, and can be inhaled by the human body in combination with the dust in the air. If people live for a long time in an environment where the concentration of radon is too high. Deuterium deposited in the airway epithelial tissue produces strong internal radiation to the human body. The probability of inducing lung cancer and other diseases increases and endangers human health. 80 to 90% of the indoor air cocoons are from the ground soil and rocks, especially in the geological structural fracture layer area: followed by the building prefabricated materials used in the project, especially the industrial waste residue building materials and natural granite.
1.2 Jia drunk
Formaldehyde is a colorless, soluble, irritating gas. It has strong stimuli and allergic reactions to human vision, sense of smell, and respiratory organs, causing symptoms such as tearing, coughing, and asthma. It can cause serious abnormalities in lung function, liver function, and immune function. The main sources of indoor free formaldehyde are four aspects: 1 artificial boards used for interior decoration such as plywood, joinery, medium density fiberboard and particle board; 2 water-based adhesives such as urea-formaldehyde resin, which is widely used as the main component of formaldehyde; Fire retardant, water repellent, antiseptic, insect repellent and other water treatment agents used for fire protection, antisepsis, and insect repellent treatment of building decoration materials; 4 Other types of decorative materials that contain formaldehyde and may be distributed to the outside world. Such as wallpaper, chemical fiber carpets, floor liners, foam, water-based paints and coatings.
1.3 Benzene
Benzene is a colorless liquid with a special aromatic odor. It is volatile, flammable and has a local irritant effect on human skin and mucous membranes. Long-term exposure to certain concentrations of benzene compounds can cause chronic poisoning. It is manifested as dizziness, insomnia, apathy, memory loss, decreased judgment and other symptoms. In severe cases, it can cause damage to the human hematopoietic system and nervous system. At present, benzene and its homologues such as toluene and xylene are still used as solvents, thinners, or additives for various solvent-based adhesives, paints, coatings, and waterproof materials in interior decoration.
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