Can the smog weather in Beijing be saved?

Let's look at the data of 20 16:

39 days of heavy pollution (7 days less than 20 15), including 38 days of heavy pollution of PM2.5, which contributed more than 30% to the average annual concentration of PM2.5;

Moderate pollution 5 1 day (1 1 day is less than 2015);

Light pollution for 78 days (7 days more than 20 15), good 130 (4 days less than 20 15) and excellent for 68 days (more than 20 15 16 days);

In 20 16, the average annual concentration of PM2.5 in Beijing was 73 μ g/m3, which was 9.9% lower than that in 20 15, the biggest drop in the last three years, but still exceeded the national standard 109%.

Four major pollutants, such as PM2.5, improved year-on-year. The average annual concentration of sulfur dioxide and carbon monoxide has reached the standard; The annual average concentrations of nitrogen dioxide, PM 10 and PM2.5 have improved, but they still exceed the standard.

The blue sky of 20 16 is 20 days faster than that of 20 15. And as far as the data is concerned, PM2.5 in Beijing shows a trend of continuous improvement.

20 16 what measures has Beijing taken to control smog?

In response to the prevention and control of air pollution, Beijing has made heavy punches in many aspects. The relevant person in charge of the Atmospheric Department of Beijing Environmental Protection Bureau said that in 20 16 years, the city's total coal consumption will be reduced to less than 1 00000 tons, and the five-year total coal consumption control target issued by the state will be achieved in advance1year; The city eliminated 424,000 old motor vehicles; Replaced three-way catalytic converters for about 43,000 taxis; 335 polluting enterprises in printing, foundry, furniture and other industries were adjusted to quit, and the task of quitting 1 200 enterprises was completed five years ahead of schedule. This year marks the end of Beijing's five-year clean air action plan. The relevant person in charge said that Beijing will fully implement air pollution prevention and control measures, implement the "Liu Jing" fuel standard, accelerate the elimination of high-emission old motor vehicles, and focus on pollution reduction of heavy-duty diesel vehicles. In addition, it is necessary to focus on rural areas and urban-rural fringe areas, and accelerate key tasks such as loose coal control, clean energy transformation of coal-fired boilers, and clean-up and rectification of "scattered pollution" enterprises.

It is said that in 20 16, the environmental protection department of Beijing issued more than1500,000 environmental violation tickets, and as many as 13 127 environmental violations were filed for punishment; It is said that Beijing spent 720 billion yuan to control smog in five years (as of spring data of 20 16); Coupled with Beijing's continuous evacuation of population from the central city to the surrounding areas, the number of vehicles that have been implemented and so on.

And by 20 17.

After the National People's Congress put forward the "blue sky defense war" this year, it immediately became a new word in the 20 17 "Government Work Report". What is the goal of the "Blue Sky Defence War"? The "Government Work Report" pointed out: "This year, the emissions of sulfur dioxide and nitrogen oxides decreased by 3% respectively, and the concentration of fine particulate matter (PM2.5) in key areas decreased significantly."

How to defend the blue sky? The "Government Work Report" also gives a clear plan-scientific policy, treating both the symptoms and the root causes, and iron-fisted governance.

"Adhere to national governance and source prevention, continue to implement air pollution prevention and control actions, and win the blue sky defense war." The report of the 19th National Congress of the Communist Party of China directly hit the pain points of people's livelihood and declared war on air pollution.

20 17 is the closing year of the first phase of Air Pollution Prevention and Control Action Plan (referred to as "Atmosphere Ten"). What is the situation in Beijing?

In 20 16, the average annual concentration of PM2.5 in Beijing was 73 μ g/m3, down 9.9% year-on-year. However, the "Ten Atmospheric Articles" clearly stated that the task of Beijing in 20 17 years is that the average annual concentration of PM2.5 will reach 60 μ g/m3, which means that the concentration of PM2.5 in Beijing will drop by nearly 20% on the basis of last year.

In order to accomplish this seemingly "impossible task", the Beijing Municipal Government can only go all out and adopt double strict governance measures.

According to the information released by Beijing Environmental Protection Bureau, the air pollution control in Beijing has been unprecedented in the past two years, with a total investment of more than 30 billion yuan, and more than 20 billion yuan in 20 17 years. All measures are aimed at the root causes of smog, including clean coal to reduce nitrogen, large-scale implementation of coal to gas, coal to electricity, and elimination of backward coal-fired boilers; Remediation of automobile exhaust, treatment of heavy-duty diesel vehicles, development of new energy vehicles, elimination of backward old motor vehicles, etc.

The source analysis results of PM2.5 released on 20 14 show that nearly 4 of PM2.5 in Beijing is imported from other places, and the proportion of vehicle exhaust emissions from local sources exceeds 30%, among which nitrogen oxides and particulate matter emitted by heavy-duty diesel vehicles account for more than 50% and 90% of the total vehicle emissions respectively. Therefore, the pollution control of heavy-duty diesel vehicles has become the top priority of motor vehicle pollution control in Beijing.

According to Li Kunsheng, Director of Motor Vehicle Emission Management Office of Beijing Environmental Protection Bureau, from 20 1 to1in 2007, Beijing inspected a total of heavy-duty diesel vehicles 1053500 vehicles through inspection in Beijing, night inspection and household inspection. The number of vehicles that have been investigated and dealt with for excessive emissions increased by 284.9% year-on-year. From September 2 1 day, diesel trucks with national III emission standards are prohibited from entering the Sixth Ring Road. After two years, all diesel trucks entering the Sixth Ring Road must meet the national IV emission standard. Three local standards for emission pollution control of heavy-duty diesel vehicles were issued, involving rapid detection methods of nitrogen oxides, limits and measurement methods of exhaust pollutants of heavy-duty vehicles. ...

Various control measures, including vehicle pollution control, have played an effective role. According to the data of Beijing Environmental Protection Bureau, as of 20 17 1 1, the cumulative concentration of PM2.5 in the whole city was 58 μ g/m3, down 13.4% year-on-year. The number of days that air quality reached the standard (excellent or good) was 200 days, an increase of 15 days compared with the same period of last year, and the compliance rate was 60.2%.

From June 20 17 to June 20 1 7/0/day, the average concentration of inhalable particulate matter (PM 1 0) in 338 cities at prefecture level and above decreased by 20.4% compared with the same period of 20 13.

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