Recently, a new study by the Xinjiang Academy of Environmental Sciences has proved that the annual emissions of nitrogen oxides from Urumqi vehicles account for more than 20% of the total nitrogen oxide emissions in Urumqi, which is the most influential air pollution in motor vehicle exhaust. Object. At the same time, the influence of motor vehicle exhaust on the atmospheric environment of the north of the city is greater than that of the south of the city.
According to the survey results, high-emission vehicles with nitrogen oxides include gasoline and diesel buses, heavy-duty trucks and passenger vehicles. Among them, heavy-duty trucks account for 60%, passenger vehicles have large reserves, and nitrogen oxide emissions are only second. On the bus.
In terms of carbon monoxide emissions, the emissions of buses are 4 and 2 times that of light trucks and heavy goods vehicles. To reduce carbon monoxide emissions, we must first start with buses, and heavy trucks cannot be ignored. The elimination of one petrol bus can be exchanged for the environmental capacity of carbon monoxide emissions from eight natural gas buses.
In addition, the pollutants emitted by various types of vehicles at start-up are greater than the emissions of one kilometer. Taking a passenger car that burns gasoline as an example, a discharge of 20.159 g of carbon monoxide, 1.078 g of nitrogen oxides, and 0.017 g of particulate matter are initiated. The emissions per kilometer were: 12.356 grams of carbon monoxide, 0.595 grams of nitrogen oxides, and 0.006 grams of particulate matter.
Since 2011, Xinjiang Environmental Protection Science Research Institute and Urumqi Environmental Protection Bureau and Zhejiang University Environment and Resources College have jointly undertaken research on the impact of motor vehicle air pollutants on air quality and pollution prevention and control research in Urumqi. This research result was accepted by the Science and Technology Department.
Lu Rensheng, deputy director of the Oasis Urban Atmospheric Environment Research Institute of Xinjiang Environmental Protection Research Institute, said that the total number of motor vehicles in Urumqi has increased rapidly in recent years, making it more difficult to improve the pollution of vehicle exhaust emissions. The emission level of motor vehicle exhaust is close to the height of the human respiratory zone, and thus it is more likely to endanger human health than other sources of pollution.
According to the investigation and research, the project team proposed that in order to further effectively control motor vehicle pollution in Urumqi, the implementation of motor vehicle environmental protection label classification management and exhaust gas detection system should promote the use of low-pollution and low-emission vehicles and IC cards. ID card management system, as soon as possible to build a vehicle traffic pollution supervision and management information network covering the city. The transfer of the transfer vehicle to the outside world is treated as if the new car was on the card, and the emission must meet the discharge standard of the new car at that time. At the same time, improve fuel economy and increase the supervision of vehicle oil products.
It is understood that the Xinjiang Environmental Protection Research Institute will conduct investigations and studies on pollutant discharges in key industrial parks in the region, thus providing a basis for environmental management and scientific decision-making.
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