PM2.5 refers to particulate matter in the atmosphere with a diameter of less than or equal to 2.5 microns. This data is used by the public to judge air pollution. Following Beijing’s announcement in January this year, Shanghai will also systematically publish daily average PM2.5 data in June this year. .
Zhang Quan, director of the Shanghai Municipal Environmental Protection Bureau, said yesterday that compared to other cities that currently only publish data from a single monitoring point, in June, more than 10 monitoring points in Shanghai will systematically publish the daily average values of PM2.5, but related The evaluation standards are still awaiting the promulgation of national standards. At the same time, due to the inclusion of PM2.5, according to the air quality evaluation standards, Shanghai’s excellent air quality rate may drop by about 15%.
Related news: PM2.5 is a “labor pain” in the process of urban development
Shanghai announced that PM2.5 will be more comprehensive
Compared with Beijing, which took the lead in announcing PM2.5 in January this year, and Zhejiang will also announce PM2.5 data next month, will Shanghai’s steps be a little late?
Zhang Quan, director of the Shanghai Municipal Environmental Protection Bureau, said that Shanghai had announced experimental data on PM2.5 some time ago. Currently, when the air quality is mildly polluted or above, reminders will be issued to citizens through Weibo and other channels, and Publish the values of PM10 (inhalable particulate matter or dust, particles with a diameter of less than 10 microns in the atmosphere) and PM2.5 (particulate matter that can enter the lungs, particles with a diameter of less than or equal to 2.5 microns in the atmosphere). By April and May, relevant preparations for the release of Shanghai PM2.5 data will be basically completed, and the city will be fully capable of systematically publishing PM2.5.
Compared with other cities that currently only publish data from a single monitoring point, in June, more than 10 monitoring points in Shanghai that are laid out according to national standards will systematically publish the daily average values of PM2.5.
In fact, since 2003, Shanghai’s air quality rate has remained above 85% for nine consecutive years. Since 2009, the rate has exceeded 90.0% for three consecutive years, reaching 92.3% in 2011, the highest in the past 12 years. According to data released by the Shanghai Municipal Environmental Protection Bureau, since 2003, the comprehensive air pollution index has shown an overall downward trend. In 2011, it dropped 25.8% from 2000 and 18.6% from 2008. Coarse particulate matter pollution in the ambient air has been significantly alleviated. In 2011, The annual regional dustfall in the city was 6.6 tons/square kilometer per month, a decrease of 15.9% compared with 2008.
However, in 2012, with PM2.5 being included in the air quality evaluation system, Shanghai’s air quality rate of excellent and good may decline.
PM2.5 puts forward new requirements for environmental protection
Zhang Quan said that the first four rounds of three-year environmental protection actions in Shanghai have achieved significant results in air pollution prevention and control. However, now PM2.5 has put forward new requirements for air quality. This is a larger area and a wider range of air pollution prevention and control work, which requires Joint prevention and joint treatment in the Yangtze River Delta region also concerns every citizen.
According to Shanghai’s fifth round of three-year environmental protection action plan, the special atmospheric environmental protection project focuses on strengthening the prevention and control of PM2.5 and other composite air pollution, with a total of 53 projects. The main task is to complete the flue gas denitrification of more than 9 million kilowatt units of 11 power plants; Coal-fired thermal power units below 350,000 kilowatts have fully implemented efficient dust removal renovations; more than 1,000 small and medium-sized coal-fired (heavy oil) boilers have been promoted to clean energy replacement and 109 coal-fired boilers over 20 tons have been retrofitted to meet dust removal standards; new vehicles have implemented National V emission standards ahead of schedule. Comprehensively implement the management of environmental protection labels for motor vehicles and accelerate the elimination of yellow-label vehicles; continue to strengthen the control of dust and volatile organic matter pollution.
Shanghai is taking action to reduce PM2.5
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