Beijing PM2.5 pollution source 70% self-produced 30% comes from outside Beijing

Of the PM2.5 sources in Beijing, regional transmissions accounted for 28% to 36%, and Beijing locally generated 64% to 72%. The Municipal Environmental Protection Bureau chief Chen Tian revealed for the first time when he was guest Beijing City Broadcasting’s “civil dialogue leader” yesterday that Beijing’s PM2.5 source analysis has passed expert verification. “Four blocks” accounted for 31.1% of motor vehicle emissions and 22.4% for coal burning. Industrial production accounted for 18.1% and dust accounted for 14.3%.

Pollution source analysis has passed argument

At the beginning of this year, Beijing PM2.5 sources of pollution, vehicle emissions in the end accounted for more or less, has caused fierce controversy. According to the deployment of the Ministry of Environmental Protection, by the end of June, Beijing, Tianjin and Shijiazhuang should complete the analysis of pollution sources. Chen Tian stated that the research results on PM2.5 source resolution in Beijing over the past year and a half have been demonstrated by experts from the Ministry of Environmental Protection and the Chinese Academy of Sciences.

From the composition point of view, organic pollutants accounted for 26%, nitrate accounted for 17%, sulphate accounted for 16%, ammonia accounted for 11%, and other elements included crustal elements accounted for 12%. “The source of particulate matter in Beijing is between 28% and 36% from regional transmission, and the remaining 64% to 72% is generated by Beijing itself. In the PM2.5 generated by this city, motor vehicles account for 31.1%, burning Coal accounts for 22.4%, industrial production accounts for 18.1%, raised dust accounts for 14.3%, and 14% comes from catering, auto repair, including livestock breeding and construction painting.”

There are 23 heavy pollution days this year

In February of this year, heavy pollution continued for one week. Heavy pollution occurred for four consecutive days in March. The day before yesterday, the Environmental Protection Agency issued a blue alert for heavy pollution. Chen Tian stated that there have been 8 heavy pollution processes this year and heavy pollution has lasted 23 days. In the same period of last year, there were 15 heavy pollution processes in Beijing. The heavy pollution days were 31 days, accounting for more than half of the 58 days of the year.

Chen Tian said that this season's heavy pollution is due to the relatively large amount of pollutants emitted during the heating season, and the second is the impact of meteorological conditions. He admitted that he did not wear a mask and that there was no air purifier at home. According to the master of medicine, he said that PM2.5 comes from all aspects of production and life, and 70% is caused by human activities. He suggested that everyone should start from the change of living habits, and each production company is responsible to society.

Research on Vehicle Emissions Research "Beijing VI Standard"

Regarding the low-lying district policy that the public cares about, Chen Tian stated that Beijing is actually being implemented. At present, the management of yellow-label vehicles is prohibited from entering the Sixth Ring Road and the outer suburbs. It is a low-bay policy. In the future, the scope of the low-elevation area is set in the end. It is also necessary to further study the adjustments as to which vehicles are to be restricted. At the same time, the congestion charge is being studied under the Clean Air Action Plan, and it will not be overlapped with the low-lying areas in the future. It is currently pending.

He also disclosed that Beijing has implemented several upgrades of motor vehicle emission standards, and that each upgrade has stricter emissions of 40% to 50%. The current "Beijing VI Standard" is still under study, and its strict degree will refer to European and US standards.

Chen Tim stated that Beijing will vigorously develop new energy vehicles and will strive to reach 200,000 vehicles in 2017. The total amount of new energy and clean energy vehicles used for buses is expected to be around 60%, and taxis will be replaced by 15,000 vehicles. The postal car is expected to reach 50%. In addition, the city plans to withdraw 300 polluting enterprises this year.

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