Shanxi Exploration of Diesel Truck Pollution Control
Editor's note: A good ecological environment is the most inclusive people's well-being.
All localities and departments have made in-depth efforts to prevent and control pollution, and achieved important results in the defense of blue sky, clear water and pure land.
Shanxi controls diesel truck pollution and protects the blue sky; Tianjin promotes comprehensive management of the Bohai Sea to improve the marine ecological environment; Jiangxi carries out rural environmental improvement, turning abandoned land into golden land... From now on, this edition will launch "Beautiful China · In-depth" Fighting the Tough Battle of Pollution Prevention and Control" series of reports, focusing on how to fight the tough battle of pollution prevention and control with a higher standard, and promote high-quality development and create a high-quality life with a higher level of protection.
In midsummer, Luliang Mountain is lush and green.
Starting from Taiyuan City, after passing the Xuegongling Tunnel, it didn't take long to arrive at Lishi District, Luliang City, Shanxi Province.
Going to the expressway, out of the epidemic prevention checkpoint, I met Xu Wan, the captain of the Lishi Detachment of the Comprehensive Administrative Law Enforcement Team for Ecological Environmental Protection in Luliang City.
I saw that the traffic police stopped the vehicle in a standard posture, and after checking the relevant procedures for driving, Xu Wan and others walked to the exhaust port of the truck first, and extended the long pipe of the portable detector into the exhaust pipe.
Immediately, emission indicators such as nitrogen oxides are displayed on the screen on the other side.
Soon, the test list was generated, and the relevant values were all within the normal range.
Stricter enforcement, from exhaust gas detection to special actions
The normal exhaust emission inspection of diesel trucks is an important starting point for Shanxi Province to promote pollution control of diesel trucks.
"We have formed a joint law enforcement mechanism for traffic police to stop cars, environmental protection departments to test and collect evidence, and traffic departments to punish, and multi-department joint meetings hold monthly scheduling meetings." Gao Jianfeng, captain of the comprehensive administrative law enforcement team for ecological and environmental protection in Luliang City, introduced.
Lvliang is a large resource city in Shanxi, with about 50,000 trucks passing through the country every day.
The passing of the truck exhaust inspection does not mean the end of the road inspection.
Xu Wan skillfully picked up a piece of white cardboard about 1 square meter and stuffed it under the car - this was a cardboard that had been worn black on one side, and the clean side was against Xu Wan's back - he drilled neatly to the bottom of the car. Under the car, after swiping around and finding that there was no problem, it "slipped" out of the cardboard again.
It was just when the sun was shining, that one movement had mixed sweat and coal dust on Xu Wan's face.
This kind of inspection action, he repeated dozens of times in the morning.
Enforcement is becoming more difficult.
"In the past, when you saw black smoke from a truck, you knew that it must be a vehicle that exceeded the emission standard. It is relatively simple and efficient to identify and punish." Wei Zhiyong, director of the exhaust gas center of the Xiaoyi branch of the Lvliang Ecological Environment Bureau, has been in the industry for many years and feels the changes in industry law enforcement. Obviously, "the current 'national five' and 'national six' trucks theoretically have much lower emissions than previous vehicles. But in fact, many trucks with upgraded standards have more serious pollutant emissions - the key problem is that the exhaust gas treatment device is Demolition. For such illegal situations, we can only use the 'earth method' of artificially drilling the bottom of the rig to identify whether to install 'shielder' and other equipment." Wei Zhiyong said.
During the interview, the reporter learned that many illegal trucks have dismantled key equipment such as three-way catalytic converters that control nitrogen oxide emissions from trucks out of pursuit of economic interests. Rare metals such as "titanium" in these equipment can be refined and sold. money, and a lot of money.
"Usually it can account for 1/5 of the price of a tow truck." Wei Zhiyong said.
In October last year, the "2021-2022 Autumn and Winter Air Pollution Comprehensive Control Plan" was issued, which clearly proposed to carry out special inspections on heavy-duty gas vehicles with "National VI" emission standards.
All 11 prefectures and cities in Shanxi have launched special actions.
From December 1 last year to March 31 this year, the Luliang City road inspection road inspected 12,107 "National VI" heavy-duty gas vehicles, and found that 1,075 vehicles had dismantled post-processing devices, accounting for 8.9%.
Technology blessing, from "squatting at the door" to monitoring and checking
Drive east from Luliang City, turn south on Dayun Expressway, and arrive at Yuncheng City.
Although Yuncheng is not a resource-based city, it is located at the junction of the three provinces and is close to the Yellow River. It has prominent transportation advantages, and transit trucks will bring about large pollutant emissions.
In Yuncheng, the blessing of science and technology has made more obvious results in the control of pollutants from diesel trucks.
In the autumn and winter of last year, a truck with "National IV" emission standards tried to enter a coking enterprise in Hejin City, Yuncheng, but encountered a "eye of the sky" block at the door - the crossbar at the exit could not be lifted for a long time.
It turned out that in addition to carrying out road law enforcement inspections, Yuncheng also installed online monitoring systems for diesel trucks and carried out monitoring of key enterprises.
"In the past, we could only squat at the door. Last year, we installed access control video surveillance systems for more than 70 companies. Vehicles under "National IV" will be automatically compared when entering and leaving key enterprises. Issue an early warning to prevent vehicles from passing, thereby preventing trucks from driving on roads with heavy pollution weather." Wang Liliang, director of the Motor Vehicle Pollution Emission Control Center of Yuncheng Ecological Environment Bureau, introduced.
In order to achieve precise control of pollution from diesel trucks, last year, Yuncheng completed the installation of a remote online monitoring system for 7,221 heavy-duty diesel trucks of "National Five" and above, and networked with the platform to monitor the emission of nitrogen oxides in real time.
On this basis, control the source of key enterprises.
"Even if the vehicle can get on the road through shielding means and pass the security check by luck, it will be detected at the entrance and exit of the transportation site." Wang Liliang said.
The blessing of scientific and technological means is also reflected in remote sensing monitoring.
There are more than 10 modules on the environmental monitoring smart screens in Yuncheng City and Luliang City.
In the "atmosphere" module, road remote sensing monitoring data and key enterprise access control system monitoring data are regularly sent back and updated, and the system will issue early warnings in a timely manner.
"As long as the vehicle passes at a certain speed and the nitrogen oxides discharged exceed the standard, the machine can capture it more accurately, which provides great support for our analysis of the trend of certain air pollutant emissions in the region." Luliang City Dang Guirong, deputy director of the Bureau of Ecology and Environment, said.
"In the past five years, we have completed road inspection and remote sensing monitoring of more than 15 million diesel vehicles." Bai Xuping, director of the Lvliang City Ecological Environment Bureau, introduced that the city invested about 50 million yuan to purchase 7 sets of mobile remote sensing vehicles, which were completed. 13 sets of fixed remote sensing monitoring systems and 9 sets of automatic black smoke capture systems have established a full-coverage remote sensing monitoring system.
From January to April this year, the comprehensive air quality index of Luliang City was 4.37, ranking second in Shanxi Province, and the average PM2.5 concentration was the lowest among all cities in Shanxi Province; the number of excellent days was 99, an increase of 12 days compared with the same period last year, and the increase was ranked in Shanxi Province. second.
No dead ends are left, from road and vehicle inspection to strict inspection of the "big chain"
Last year, when Zhang Wanqiang, a resident of Yuncheng, was queuing for refueling in Linyi County, he encountered a stranger who said to him, "Using my oil, it is 3 yuan cheaper per liter." Zhang Wanqiang followed the stranger's van for a while, waiting by the roadside. A truck came with a barrel of oil.
Not long after filling up a tank of fuel, the oxygen sensor of Zhang Wanqiang's car failed.
"Many of the people who sell illegal gasoline at the gas station use blended gasoline, which will generate too much impurities, which will not only cause hidden dangers to driving safety, but also easily cause excessive exhaust emissions." Hu Jingjie, a staff member of the Yuncheng Market Supervision Bureau, introduced, "The Yuncheng Public Security Bureau, the Market Supervision Bureau and other departments have jointly strengthened the control of oil products. Last year, a total of 84 illegal gas stations were closed. So far this year, 14 illegal gas stations have been closed, and 8 people have been administratively detained."
Yuan Weiting, director of the Yuncheng Ecological Environment Bureau, said: "We should not only control truck pollution from transportation chains such as vehicles, roads, and networks, but also start from the 'big chains' such as oil testing and motor vehicle emission testing agencies, and control the pollution from various aspects. Truck pollutant emissions are checked to fill the gaps, leaving no dead ends.”
Previously, during the big data comparison, the Ecological Environment Monitoring Section of the Luliang City Ecological Environment Bureau found that many trucks tested by a motor vehicle emission inspection agency were all punished for exceeding the emission standard. The agency conducted a surprise inspection and found that the camera placement was unqualified, and decided to rectify it by disconnecting the network for two weeks." Zhao Yongying, chief of the ecological environment monitoring section of the Lvliang City Ecological Environment Bureau, introduced that Lvliang City has fully implemented vehicle emission testing and mandatory maintenance. system, and strive to plug the loopholes of fraud in the EIA link.
During the interview, the reporter learned that coal transport vehicles account for a relatively high proportion of trucks in Shanxi, and there are problems such as many transit vehicles and high nitrogen oxide emissions.
In the past few years, since the start of the battle against air pollution, the local area has increased the control of trucks, and achieved obvious results, but there is still room for improvement.
For example, the remote emission monitoring system "standard" for "National VI" vehicles is only connected to various auto companies, and the network with the environmental protection department has not been opened; the accuracy of remote sensing monitoring equipment needs to be improved, and currently only trend analysis can be provided. Provide qualitative and quantitative punishment basis.
Regarding the penalty basis for the unauthorized dismantling of automobile aftertreatment devices, the standards of each county and district are different, "some can be fined 2,000 yuan according to the relevant provisions of the traffic department, and some are only based on the traffic police department's 'illegal modification' or 'break-in ban'. It is a matter of 100 yuan fine." Relevant persons believe that the punishment standards should be unified, and the punishment for unauthorized removal of the after-treatment device of trucks should be increased, so that the significance of upgrading diesel trucks can be realized, and the blue sky can be effectively protected. war.