Most popular members of the two sessions explain i

2022-10-03
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Members of the two sessions explained in detail whether PM2.5 monitoring equipment is imported or domestic

Introduction: during the 12th Five Year Plan period, China will build nearly 1500 PM2.5 monitoring points, and the initial investment will exceed 2billion yuan

who enjoys the huge market cake of purchasing PM2.5 monitoring instruments? Is the monitoring equipment imported or domestic

pm2.5 has been written into the ambient air quality standard, and the news that fine particulate matter monitoring will be carried out nationwide is like injecting a needle into major forums. While the general public applauded it, the detailed inquiry about it seems to have just begun: who enjoys the huge market cake of purchasing PM2.5 monitoring instruments? Is the monitoring equipment imported or domestic? Will regional joint prevention and treatment become a constraint for PM2.5 to write the blue sky? In this regard, I interviewed representatives of the two sessions and experts outside the meeting

the staff of Beijing environmental protection monitoring center are adjusting the PM2.5 monitoring equipment (photographed on January 7)

monitoring equipment: imported or domestic

Wu Xiaoqing, Vice Minister of the Ministry of environmental protection, said on the 2nd that during the 12th Five Year Plan period, China will build nearly 1500 PM2.5 monitoring points, and the initial investment will exceed 2billion yuan

is the monitoring equipment imported or domestic? Many people suggest that they must buy imported ones. But Wang yuesi, a researcher at the Institute of Atmospheric Physics of the Chinese Academy of Sciences, said: some foreign instruments are not easy to use. Foreign monitoring instruments have their own defects, and method evaluation also takes time, so it is difficult to get consistent results in a short time. Up to now, there is no instrument that can accurately determine the concentration of PM2.5

pm2.5 monitoring mainly includes weighing method, ray method and light scattering method, which need to learn from the successful experience of developed countries, but cannot be copied completely. Bao jingling, deputy to the National People's Congress and chief engineer of Tianjin Environmental Protection Bureau, said that different monitoring methods and instruments will cause considerable differences in data. In terms of observation, analysis and treatment technology, the government should give more support, pay attention to the development of national instrument manufacturing industry, and gradually use local technology for PM2.5 monitoring and treatment in China

regional joint prevention and treatment: is it on paper

on BBS forums of some colleges and universities, many students who love environmental protection posted Posts saying: can only monitoring PM2.5 cure the root cause? No matter how advanced the instrument is, it can't change the dust. The key depends on how to deal with it

representative Bao jingling deeply agreed with this: air pollution is a regional concept. Take Beijing Tianjin Hebei as an example. Under the control of climate conditions, it will definitely affect each other. If we don't implement the regional joint prevention and treatment, no matter how we monitor the air quality, it's useless

pm2.5 has small particle size and far propagation, and the peripheral transmission has the highest contribution rate to PM2.5 in big cities. Peichunliang, a deputy to the National People's Congress who is engaged in the cement production industry, said, for example, Tianjin and Hebei regions have gathered a large number of highly polluting industries such as cement, steel, oil refining, petrochemical, etc., and the total amount of regional coal combustion exceeds 350 million tons a year, accounting for about 24.5% of the source of PM2.5 in Beijing

to achieve these goals, the central environmental protection department needs to do a good job in the top-level design, so that experts, academicians, environmental protection departments and grass-roots management workers in these areas, which have ranked first in the world for eight consecutive years, can sit together on an equal footing, jointly study and sort out, make overall consideration, and work out overall solutions, so as to achieve the unified regional environmental protection goals. Bao jingling said

new national standard: how difficult is it to connect with the world high rail

Wu Xiaoqing said on the 2nd that the pollutant control project in the new ambient air quality standard has achieved international standards, but it is only connected with the world low rail. After the implementation of the new national standard, two thirds of China's cities will not meet the requirements of air quality

at present, it is quite difficult to connect with the world high orbit. Yu Jianhua, director of the atmospheric environment management office of the Beijing Municipal Environmental Protection Bureau, said that taking Beijing as an example, since 1998, more than 200 heavily polluting enterprises such as Shougang, Beijing Coking Plant and Beijing chemical plant have been shut down and relocated. When necessary, the pollution can be measured with a viscometer, and the prevention and control measures are taken. The space to continue to increase the measures becomes smaller. Some countries often use the test bar with a V-notch, and directly take the impact energy consumed by punching the test bar as the Charpy impact toughness (CVN value), while not dividing this impact energy by the cross-sectional area of the test bar notch means that it is more difficult to significantly improve

in fact, as early as 10 years ago, some scientific research institutions began to monitor PM2.5 to generally understand its concentration change trend. Bao jingling suggested that the current key is not to entangle in a certain monitoring data, nor to introduce overseas advanced monitoring instruments. Instead, we should make every effort to conduct in-depth research so that we can better use ingredients, especially to find out what toxic and harmful substances are attached to PM2.5, and carry out targeted source reduction. According to Xinhua news agency, Zhang yubiao, a deputy to the National People's Congress, large cities should restrict the purchase of cars. According to Xinhua news agency, Beijing, March 5, after the PM2.5 monitoring is made public, the more important thing is how to deal with PM2.5. Zhang yubiao, deputy to the National People's Congress and director of Shenzhen Nanling Village neighborhood committee, suggested that in large cities with serious PM2.5 pollution, automobile purchase restrictions should be implemented to control the unlimited growth of motor vehicles

pm2.5 is mainly from industrial emissions and automobile exhaust. In Beijing, Shanghai, Guangzhou, Shenzhen and other big cities, there are fewer and fewer traditional industries. Therefore, the main culprit of PM2.5 is automobile exhaust

Zhang yubiao said: to control PM2.5, we must suit the remedy to the case. There are only two ways to reduce PM2.5 produced by vehicle exhaust emissions: first, directly reduce the amount of exhaust emissions by controlling the growth of the number of vehicles; Second, adopt new technologies and promote clean energy vehicles. However, at present and in the future, restricted by the two bottlenecks of technology and price, the development of new energy vehicles in China and even the world is still in its infancy, and it is impossible to replace fuel vehicles in a large area in the short term. Therefore, Zhang yubiao believes that it has become a top priority to regulate the explosive growth of the number of cars through policy levers in the near future

at present, there are three ways to restrict the growth of cars in China: first, the lottery of motor vehicle license plates in Beijing; The second is the license auction in Shanghai, and the third is the high vehicle cost system in Hong Kong

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