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Mobile WebSiteMinistry of Ecology and Environment: Automobile pollution reduction will be the focus of the "14th Five-Year Plan"
At the regular press conference of the Ministry of Ecology and Environment held yesterday, Liu Bingjiang, Director of the Department of Atmospheric Environment of the Ministry of Ecology and Environment, pointed out in response to reporters that mobile sources such as motor vehicles have become the main source of PM2.5 pollution in large and medium cities in my country, and Its contribution to pollution has an increasing trend. The reduction of automobile pollution will be the focus of the "14th Five-Year Plan", but also a difficulty.
"The concentration of PM2.5 in the 13th Five-Year Plan period has dropped by 28.8%. What is the main contribution? According to expert assessment results, it is mainly due to the remarkable effect of'control of coal'." Liu Bingjiang said that sulfur dioxide emissions have gone from the highest value of 25.88 million The tonne dropped to less than 7 million tons, and the “14th Five-Year Plan” sulfur dioxide withdrew from the binding targets. In contrast, the treatment of NOx (nitrogen oxides) and VOCs (volatile organic compounds) caused by fuel has a certain effect, but no matter the strength or the effect, it is far inferior to the treatment of sulfur dioxide.
Liu Bingjiang said that according to the latest data released at the end of 2020, the number of motor vehicles nationwide is 372 million, of which 281 million are cars. Each year, more than 20 million cars are added, and more than 100 million cars are added during the 13th Five-Year Plan. According to related studies, mobile sources such as motor vehicles emit nitrogen oxides that account for about 60% of total emissions, and volatile organic compounds account for about 23%.
"To prevent and control motor vehicle pollution, we have done a lot of work." Liu Bingjiang said, first, in the 13th Five-Year Plan period, 14 million old cars have been eliminated nationwide. In 2018-2020, more than 90 vehicles will be eliminated in the Beijing-Tianjin-Hebei region and surrounding areas and the Fenwei Plain Ten thousand heavy-duty diesel trucks operating in National III and below are phased out ahead of schedule. The second is to promote the upgrade of emission standards for new vehicles. The National Sixth Standard for light vehicles has been fully implemented. The number of National V and National VI vehicles has increased from 2% in 2015 to 45%, and single-vehicle emissions have dropped significantly. The third is the rapid improvement in the quality of gasoline and diesel for vehicles. Automotive oil standards have achieved triple jumps from National IV to National VI standards. Automotive diesel, ordinary diesel, and some marine fuel oils have been combined. The most important environmental indicator of automotive gasoline and diesel-sulfur content reaches the standard 10ppm, reaching Europe and the United States Developed country level. In addition, the number of new energy vehicles is increasing rapidly, with buses, taxis, garbage sweepers, postal vehicles, light logistics vehicles, and new energy vehicles in the public sector increasing.
"Recently, we have found that the concentration of nitrogen oxides has shown a relatively good trend." Liu Bingjiang believes, "Is there any relationship between the decrease in PM2.5 concentration and vehicle emissions? The answer is certain." He said, "Through our scientific analysis of the heavy pollution process Monitoring and analysis shows that PM2.5 ranges from excellent to good, mild, moderate to severe, and continuous severe. The main component that drives up the PM2.5 concentration is nitrate, that is, the emission of nitrogen oxides is converted into nitrate. Especially in Beijing. Obviously, sulfate is basically unchanged, mainly driven by nitrate. Now it seems that the reduction of nitrogen oxides has become the focus, that is, because the early coal-burning control has been effective, and the current car emissions problem has become more prominent."
Article information source-China Economic Net
