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Winning the blue sky to defend the war requires precise pollution control. The premise of accurate pollution control is the need to detect pollution emissions in a timely manner. And scientific and technological means are playing an increasingly important role in finding problems in time. Yesterday (August 26th), the Ministry of Eco-Environment announced the launch of the “California Projectâ€, which gradually included the Beijing-Tianjin-Hebei and surrounding “2+26†cities, 11 cities in the Plains of the Plains and 41 cities in the Yangtze River Delta to achieve air pollution control. The hot grid supervision of the three key regions covers the entire coverage and improves the efficiency of environmental supervision. The Ministry of Ecology and Environment will publicly report the hotspot grid that has been alerted for three consecutive times in one year or that has been alerted six times in a row.
Zhao Qunying, deputy director of the Environmental Supervision Bureau of the Ministry of Ecology and Environment, said that the “Clairvoyance Plan†means that through the satellite remote sensing and other technical means, the Beijing Command can find key areas such as “2+26†cities, the Plains of the Plains and the Yangtze River Delta. In areas with high PM2.5 concentrations, key supervision is carried out. "After thousands of miles away, you can also find out where there are environmental problems in the first place, notify local inspections to find out who the problem is and deliver it in time, so as to improve the efficiency of supervision and effectively solve the problem of a small number of environmental law enforcement personnel and a large regulatory area. It is difficult to find problems in time, etc.," he said.
According to reports, the Ministry of Ecology and Environment has divided the grid of 3,000 meters × 3000 meters for the total administrative area of ​​the “2+26†city, with a total of 36,793, and selected 3,600 grids with higher PM2.5 concentration and heavy emissions. Hotspot grid. In 2017, the Ministry of Ecology and Environment launched a hot grid supervision pilot in Luzhou, Hebei Province, which was able to identify and solve a number of outstanding environmental problems in time, and promoted a significant decline in the hot grid and the city's PM2.5 concentration.
Image source: Xinhua News Agency
The hot spot grid pollution concentration will be delayed for three consecutive months, and the local government will be supervised.
The reporter learned that on the basis of summarizing the pilot experience, the Ministry of Ecology and Environment issued the "Notice on Doing a Good Job in Hot Spot Grid on Air Pollution" on May 17 this year, and organized the "2+26" city to be fully launched since June. Hotspot grid supervision work.
The Ministry of Ecology and Environment has the highest monthly average PM2.5 concentration in each city, the worst improvement in PM2.5 concentration last year, and the three types of hotspot grids with the worst improvement last month as the early warning grid. All cities are required to increase supervision over the early warning grid, organize the investigation of gas pollution sources and rectify problems. For hotspot grids that have been alerted for three times in a year or that have been alerted six times in a row, the Ministry of Ecology and Environment will adopt measures such as public notification, stationed working groups, and government officials in the county (district, city) where the public interview grid is located. Solve problems locally and improve the environment.
Whether it is a notification, a working group or an interview, the purpose is to hope that local governments can pay attention to it, do a good job in the investigation and punishment of environmental pollution discharges in the jurisdiction, and reduce the emission of atmospheric pollutants. The reporter learned that the local government of “2+26†in the Beijing-Tianjin-Hebei region has attached great importance to the environmental supervision of hot grids. Some city party and government leaders have installed hot grid supervision software on their mobile phones. The pollution concentration of the hot grid in the jurisdiction, once the problem is discovered, immediately ask the supervisor to investigate and deal with it.
Changping District two grids were notified
The reporter learned that in order to ensure the effectiveness of the “California Projectâ€, the Ministry of Ecology and Environment launched a hot grid supervision pilot in Cangzhou City, Hebei Province last year. A total of 126 hotspot grids are located in Zhangzhou, with up to 20 grids in one zone and only 1 grid in at least one zone. These grid areas account for 8% of the total area of ​​the city.
Zhao Qunying said that during the pilot period, Zhangzhou City and the county attached great importance to the establishment of grid long and full-time grid supervisors on a grid-by-grid basis, and comprehensively identified 6,325 gas-contaminated source enterprises in the hot grid, 4,143 boilers, and found various environments. Question 7760. The grid manager will formulate a rectification plan for the problem organization, and the grid supervisor will conduct daily inspections and supervise the implementation. The reporter learned that during the pilot period from July to December last year, the concentration of PM2.5 in the whole city of Luzhou fell by less than 20% year-on-year, but the drop of PM2.5 in the hot grid area reached 38.3%, and the regulatory effect was very significant.
Yesterday, the Ministry of Ecology and Environment announced the list of “2+26†urban early warning grids in Beijing, Tianjin and Hebei and surrounding areas in July. The two grids in Beijing’s Changping District had the highest monthly average PM2.5 and the worst year-on-year improvement. The PM2.5 was reported to be the worst in the last month.
Over 36,000 grids in the area
When talking about how to determine the grid, Zhao Qunying, deputy director of the Environmental Supervision Bureau, said that the Ministry of Ecology and Environment has divided the grid of the “2+26†city administrative area by 3 km×3 km, totaling 36,793. Using satellite remote sensing technology, combined with meteorological data and air quality monitoring data, calculate the average PM2.5 concentration for each year on each grid, and eliminate the effects of meteorological transmission, precipitation process, terrain barrier, boundary layer height and other factors. In the static level, the 3600 grids with higher PM2.5 concentration and heavier emissions were selected as hotspot grids.
The number of hotspot grids in “2+26†cities is different. The number of hotspot grids in most cities is more than 100. In Yangquan, Hebi, Changzhi, Fuyang and other cities, the number of hot grids is less than 80, while Shijiazhuang and Tianjin There are more than 200 hotspot grids in Zhengzhou and Chongqing, which belong to the largest number of cities. The hot grid area of ​​each city generally accounts for about 10% of the total area of ​​the city. This has set a key supervision area for the local government and relevant departments, so that it can concentrate on solving outstanding problems and achieve twice the result with half the effort.
The reporter noted that the top three cities with the largest number of hotspot grids are Shijiazhuang, Yi and Zhengzhou, and the number of grids is 270, 232 and 221 respectively. The number of hotspot grids in Beijing is 133.
Increase grid range from October
Zhao Qunying said that in the next step, the Ministry of Eco-Environment will gradually expand the scope of implementation of the “California Projectâ€. The implementation scope will be “2+26†cities before October 2018; 11 cities in the plains will be added from October; 41 cities in the Yangtze River Delta will be added in February 2019, thus achieving full coverage of hot grid supervision in key areas.
The plain has been divided into 23,400 grids, and 773 hot grids have been initially screened. It is expected that a formal list will be formed in August to push relevant cities. The Yangtze River Delta plans to complete hotspot gridding and screening by the end of this year.
In addition, the Ministry of Ecology and Environment will also study the use of ground monitoring micro-station and mobile monitoring equipment (vehicle-type or portable) and other technical means, the comprehensive use of Internet technology and big data concept, explore the construction of "hot grid + ground monitoring micro-station + mobile "Monitoring equipment" working mode, continuously implement the "Clairvoyance Plan", refine the law enforcement supervision area, closely monitor the concentration changes and abnormal time periods of pollutants such as PM2.5, and further enhance the pertinence of daily monitoring and law enforcement inspection of hotspot grids. And accuracy, improve the level of air pollution supervision.
It is reported that the Ministry of Ecology and Environment has selected 800 key grids from 3,600 hot grids delineated by Beijing, Tianjin and Hebei, and installed 3,200 PM2.5 small and micro monitoring stations to set up 28,800 500 meters by 500. The grid of meters, these grids will be more elaborate than the 3 km by 3 km grid, plus the portable monitors in Beijing, you can find more hidden sources of pollution, "for example, hidden in a workshop in the factory. Or hide in the workshop of the home garden. "Improve the precise monitoring of the concentration changes and abnormal periods of pollutants such as PM2.5, further enhance the pertinence and accuracy of the daily supervision and law enforcement inspection of the hot grid, and improve the level of air pollution supervision. Resolutely win the blue sky to defend the war.
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