● Through the dynamic monitoring system of mobile source pollutant emission sampling inspection in Sichuan Province, it is easy to detect whether the tail gas emission of diesel trucks reaches the standard at the inspection site, and it is also possible to access the historical sampling inspection records of vehicles.
● At present, there are 35 road checkpoints in the province to conduct spot checks on diesel truck exhaust every day, and more than 900 vehicles are spot-checked every day.
● The over-standard rate of road inspection in the province dropped from 3.4% in 2021 and 1.4% in 2022 to 1% in January-March 2023, and the number of over-standard vehicles and smoky vehicles decreased year by year.
● Relying on the application functions of pollution traceability, data analysis, overall scheduling and target management of the "ecological wisdom brain", it helps to solve more than 5,100 air pollution problems such as road site dust, mobile source pollution and industrial enterprise sewage discharge.
"Please pull over for exhaust gas detection." On April 24th, the environmental protection and public security departments of Chongyang Avenue, chongzhou city, Chengdu, were sampling the exhaust of diesel trucks passing by. Tests like this are carried out every day in key areas of atmospheric control in the province.
Through the empowerment of science and technology, the eco-environment department of our province has continuously improved the accuracy of atmospheric pollution control and continuously improved the "blue sky happiness".
An APP can detect whether the exhaust emissions of diesel trucks meet the standards.
At the inspection point of Chongyang Avenue, after the inspectors stopped the vehicle, they opened an APP in the mobile phone to access the basic information such as the vehicle license plate and the enterprise to which the vehicle belongs. After checking the vehicle information, the inspectors began to detect the exhaust gas of the vehicle.
"This software is the dynamic monitoring system of Sichuan mobile source pollutant discharge sampling inspection, and it is connected with the provincial mobile source environmental protection database." The relevant person in charge of the Atmospheric Environment Department of the Department of Ecology and Environment told the reporter that through this system, it is easy to detect whether the exhaust emission of diesel trucks reaches the standard at the sampling site, and it is also possible to access the historical sampling records of vehicles.
At the sampling site, an inspector held an orange-gray equipment that looked like a toolbox, and one end of the equipment was connected with a long metal probe. "This is the’ nose’ of the testing equipment, and the sense of smell is extremely sensitive." The inspector told the reporter that the inspection needs two people to cooperate, one is responsible for stepping on the accelerator in the cab, and the other needs to put the probe near the exhaust pipe at the bottom of the car for inspection. The test data is transmitted back to the dynamic monitoring system of mobile source pollutant discharge sampling inspection in Sichuan Province by wireless communication.
"Buzz ……" After several rounds of stepping on the gas pedal, the inspectors completed the sampling, and the test results were displayed in the system in real time.
"The test is qualified, please pass." The whole detection process takes less than 10 minutes.
How to judge whether the vehicle emission exceeds the standard? The relevant person in charge of the Atmospheric Environment Department of the Department of Ecology and Environment told the reporter that the road inspection of diesel vehicles mainly detects the emission of particulate matter, and the detection value is the smoke value. If the smoke value exceeds 1.32, it is judged as exceeding the standard. "At the same time, the road inspection should also manually check the vehicle pollutant control device." The person in charge said.
More than 900 vehicles were sampled every day, and the over-standard rate dropped to 1%.
According to the data from the Department of Ecology and Environment, at present, there are 35 road checkpoints in the province to conduct spot checks on the tail gas of diesel trucks every day, and more than 900 vehicles are sampled every day.
The relevant person in charge of the Atmospheric Environment Department of the Department of Ecology and Environment said that the sampling test data will be shared to the whole province in real time through the system. If the test is qualified, it will be released directly, and the over-standard vehicles will be punished by the public security traffic management department on the spot. The ecological environment department will issue a notice of maintenance and re-inspection within a time limit, and will enter the information of over-standard vehicles into the system platform to supervise and track whether the vehicles will be repaired and re-inspected later. "If there is no maintenance or re-inspection, remind me by SMS again. If there is still no maintenance or re-inspection, it will be listed in the regulatory blacklist for regular publicity, and the vehicle will be randomly inspected and investigated. " The person in charge said that if the qualified vehicle is intercepted again within one month, it will be directly released without inspection.
The reporter learned that for vehicles exceeding the standard, the ecological environment department should also carry out the problem traceability, inquire about the latest annual inspection of vehicles exceeding the standard through the system platform, and analyze whether there are any violations of laws and regulations during the annual inspection of vehicles. If there are, they will be investigated immediately.
"Road inspection is a necessary supplement to the annual inspection of vehicles. Through road inspection, it not only cracks down on the illegal behavior of vehicles with excessive emissions on the road, but also shocks the illegal behavior of inspection agencies to falsify." The relevant person in charge of the Department of Ecology and Environment said.
The data is the best proof. The over-standard rate of road inspection in the province decreased from 3.4% in 2021 and 1.4% in 2022 to 1% in January-March 2023, and the number of over-standard vehicles and vehicles emitting black smoke decreased year by year.
At present, through the empowerment of science and technology, our province has increased the intensity of road inspection and road inspection, and promoted the continuous optimization of vehicle structure, thus reducing pollution emissions.
The accuracy of air quality information obtained by the "algorithm" is over 80%
In addition to strengthening the control of mobile sources, the "ecological wisdom brain" will also play an important role in winning the blue sky defense war.
The reporter entered the Atmospheric Intelligence Big Data Supervision Center in Chengdu Economic Development Zone (Longquanyi District), and the huge screen came into view. The monitoring indicators of air pollution sources such as the action track of the slag truck, factory power and dust on the construction site were all in sight.
"At present, it has accessed the data of more than 600 construction sites and more than 900 factories in the jurisdiction, as well as the data of more than 20 million slag trucks and more than 60 million traffic bayonets per day." The relevant person in charge of the Atmospheric Intelligent Big Data Supervision Center in Chengdu Economic Development Zone (Longquanyi District) said that by building a "fixed+mobile" pollution traceability system, 24 fixed atmospheric monitoring stations and 110 mobile monitoring stations carried by buses, taxis and special inspection vehicles will be built to realize the global perception and accurate traceability of atmospheric pollution sources.
Massive data has supported the "ecological wisdom brain".
This "ecological wisdom brain" divides Longquanyi District of Chengdu into 634 grids, and conducts big data analysis 24 hours a day. With the core algorithm, it obtains ultra-high-precision air quality information of kilometers and hours in the city.
"The’ ecological wisdom brain’ can capture urban micro-scale pollution incidents in real time, breaking the pollution traceability mode such as manual investigation and crowd tactics, and further improving the efficiency of discovering, responding and solving air pollution problems." The relevant person in charge of the Chengdu Ecological Environment Bureau said.
Can see, can measure, but also can be used. At present, what is the effect of "ecological wisdom brain" in atmospheric pollution control?
"The accuracy of the grid calculation of the air quality of the’ ecological wisdom brain’ is over 80%." The relevant person in charge of the Chengdu Bureau of Ecology and Environment said that strengthening "coordination of measurement and management" is an important means to exert the application of "ecological wisdom brain".
On February 20 this year, the "Ecological Wisdom Brain" found that the air pollution index of the grid where Chengdu Institute of Administration was located was rising, which was at a critical value. Through pollution traceability analysis, it was judged that it was caused by the construction of a certain site. The system automatically pushed the information to the command and dispatch workbench, and the workers under the warp checked on the spot and found that mud was accumulated at the entrance and exit of the site, a large number of slag trucks entered and exited, and no smoke recovery device was adopted in the welding operation. Immediately, the relevant departments immediately gave help and guidance to the site and set up a reform.
The relevant person in charge of Chengdu Ecological Environment Bureau said that relying on the application functions of "ecological wisdom brain" such as pollution traceability, data analysis, overall scheduling and target management, it has formed a one-stop and whole-process closed-loop control of air pollutants, helping to solve more than 5,100 air pollution problems such as road site dust, mobile source pollution and industrial enterprise sewage discharge. (Reporter Tian Chengchen)