It is reported that since July 1, unqualified decoration materials such as solvent based coatings (paints) and adhesives, which are seriously harmful to the health of citizens, have been banned in Shenzhen, becoming the first city in China to restrict the sales and use of solvent based coatings (paints). Meanwhile, non road mobile machinery with substandard exhaust will also be banned from use in construction sites, factories, ports and docks in Shenzhen. Therefore, it is analyzed that the prohibition of sales and use of solvent based coatings will promote the development of water-based environmental protection coatings and better improve the current living environment.
Deep treatment of VOCs
At the beginning of this year, the Municipal Commission of human settlements and environment put forward a clear goal for the prevention and control of air pollution: in 2015, the annual average concentration of PM2.5 in the city will be reduced to 33 μ g / m3. More than half of this year, what's the effect? According to the report on the air quality of Shenzhen in April 2015 issued by the Municipal Commission of human settlements and environment, in April this year, the concentration of PM2.5 in Shenzhen was only 28 μ g / m3, a year-on-year decrease of 4 μ g / m3, and the concentration of all pollutants, including the concentration of nitrogen dioxide, carbon monoxide and ozone, decreased by different degrees compared with the same period last year. From January to April this year, Shenzhen's comprehensive index of ambient air quality has been ranked in the top 10 of the country, and it is also the only first tier city with a population of more than 10 million. The effect is obvious
Liu Chuhan, director of the Municipal Commission of human settlements and environment, told reporters that in order to achieve the goal of reducing PM2.5 to 33 μ g / m3 this year, the Commission will launch a number of in-depth air pollution control measures from July 1
First of all, the VOCs were treated in depth. The special zone technical specifications for the limit of harmful substances in architectural decoration coatings and adhesives were issued. The second stage limit standard for harmful substances was implemented from July 1, 2015, and unqualified decoration materials such as solvent based coatings (paints) and adhesives that seriously endanger the health of the public were banned. Therefore, Shenzhen has become the first city in China to restrict the sales and use of solvent based coatings (paints)
Secondly, the diesel engine for non road mobile machinery is deeply treated. On July 1, 2015, Shenzhen Special Economic Zone formally implemented the technical specifications of limits and measurement methods for exhaust smoke emissions of diesel engines for non road mobile machinery in use. In the future, non road mobile machinery with substandard exhaust shall not be used in construction sites, factories, ports and wharfs in Shenzhen
Paint produces a lot of pollutants, which has been banned in foreign countries
It is understood that PM2.5 is an important cause of haze weather. Among the main sources, automobile exhaust emissions account for 30% and VOC (volatile organic compounds) emissions account for 21%. Recent relevant data show that about 18% of VOC emissions are caused by solvent based paint (paint) emissions
Professional environmentalists told reporters that paint uses organic solvent as diluent, which consumes energy, pollutes the environment, is toxic, harmful, flammable and explosive. In 2004, the European Union legislated against the production and use of paints. "The harm of paint is not only these, because it needs to be diluted with the organic solvent extracted from oil and coal, which not only consumes fossil energy, but also contains a large number of toxic and harmful substances such as benzene, toluene, xylene, formaldehyde, etc., with a volatilization period of more than ten years. The traditional paint often uses a large number of toxic and harmful volatile organic solvents as diluent, and some products also use curing agent containing free TDI, resulting in a large number of air pollution. Long term inhalation of the volatile gases of these solvents and curing agents can easily lead to aplastic anemia, leukemia, tuberculosis, pleurisy and other serious diseases. "
No sale of paint, water paint is better
When the harm of paint is exposed to the public, the advantages of waterborne paint become obvious. Compared with paint, water paint only has ultra-low VOC; it can be diluted with water without organic solvent dilution. Compared with the high pollution and high harm of organic diluents, water can provide due guarantee for environmental protection and health; water paint does not burn or explode, and has advantages that paint does not have in many links such as transportation and storage
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