How did smog form in Chengdu?

Question 1: What are the topographic reasons for the serious haze in Chengdu? It is located in a basin, and the atmospheric environment capacity is extremely limited, which is not conducive to the diffusion of pollutants; the static weather caused by the geographical environment (low wind speed) is not It is conducive to the diffusion and dilution of pollutants, aggravating air pollution;

Climate: Chengdu has frequent temperature inversion weather, and pollutants can only accumulate near the ground and cannot diffuse, thus aggravating pollution; Chengdu area has high humidity, Cloudy and foggy weather plays a role in promoting the formation of haze weather

Question 2: Why is the haze in Chengdu so heavy? I have seen many people wearing masks when I go out recently. It is said that this is the result of the severe epidemic in Pengzhou Petrochemical Company in a suburb of Chengdu.

Smog is a combination of fog and haze.

In 2013, "haze" became the keyword of the year. In January of this year, 4 haze events enveloped 30 provinces (autonomous regions and municipalities). In Beijing, there were only 5 non-haze days. A report shows that among the 500 largest cities in China, less than 1% meet the air quality standards recommended by the World Health Organization. At the same time, 7 of the 10 most polluted cities in the world are in China.

Question 3: What are the main causes of smog in Chengdu? Well, let’s talk about it briefly. As Chengdu develops into a first-tier city, it will inevitably produce a large amount of inhalable particulate matter (the main culprit). Moreover, it is located in a basin where pollutants are not suitable for spreading, and the stable climate is not conducive to the spread of smog. Plus some usual motor vehicle exhaust, factory emissions... and so on.

Question 4: What are the causes of smog in Chengdu? What's the solution? (1) The formation is mainly the result of the synergistic effect of a large number of particles suspended in the air and meteorological conditions. There are three causes:

——The phenomenon of static wind increases in the horizontal direction. Buildings are getting taller and taller in cities, and the blocking and friction effects significantly weaken wind flow through urban areas. The increase in quiet wind phenomena is not conducive to the diffusion and dilution of suspended particles in the atmosphere, and is easy to accumulate around urban areas and suburban areas;

——Temperature inversion occurs in the vertical direction. The inversion layer is like a pot lid covering the city. This inversion phenomenon in which the temperature at high altitudes is higher than that at low altitudes restricts the vertical movement of air at low altitudes in the atmosphere. Suspended particles in the air are difficult to float to high altitudes and are blocked in the atmosphere. Low altitude and near the ground.

- Increase in suspended particulate matter in the air. With the growth of urban population, industrial development, and the surge of motor vehicles, pollutant emissions and suspended solids have increased significantly, directly leading to reduced visibility.

(2) 1 Adopt temporary odd and even number restrictions on official vehicles and social vehicles;

2 Promote motor vehicle exhaust emissions to meet standards;

3 Develop public transportation ***Transportation, advocate green travel;

4 Accelerate the supply of National III and National IV oil products and improve the quality of supplied oil products;

5 Major polluters, such as metallurgy and building materials , the chemical industry limits emissions or temporarily shuts down.

Question 5: Why is there a lot of smog in Chengdu? Recently, I saw many people wearing masks when I went out. It is said that it is the result of the serious pollution of Pengzhou Petrochemical Company in the suburbs of Chengdu.

Smog is a combination of fog and haze.

In 2013, "haze" became the keyword of the year. In January of this year, 4 haze events enveloped 30 provinces (autonomous regions and municipalities). In Beijing, there were only 5 non-haze days. A report shows that among the 500 largest cities in China, less than 1% meet the air quality standards recommended by the World Health Organization. At the same time, 7 of the 10 most polluted cities in the world are in China.

Question 6: Where did the smog in Chengdu come from in December 2016? There are different opinions, some say PZ Petrochemical, some say car exhaust, I personally think it is a combination of both. It is recommended that you install a fresh air system in your home. Chengdu Jietai Construction has done a good job in this regard

Question 7: What to do about the smog in Chengdu and how to solve it? Now the environment can only rely on the leaders. To be honest, the people can’t Nothing can be done. But if you have a small environment, you can solve it. If you have an old house, install a wall-mounted fresh air system. If you have a new house, install a fresh air system. It can not only filter PM2.5, but also introduce filtered fresh air into the home. For more details, you can go to Chengdu Jietai Construction is doing a pretty good job, I hope it can help you. < /p>

Question 9: When haze control is in progress: What are the causes of haze in Chengdu? Haze is a special weather phenomenon.

Refers to dust, sulfuric acid, nitric acid, organic hydrocarbons and other non-aqueous substances in the air that make the atmosphere turbid, blur the field of vision and cause visibility to deteriorate.

Reasons:

1. These are The relative humidity of the air near the ground in the area is relatively high, and the dust on the ground of the saliva collector is large. People and traffic on the ground stir up the dust;

2. Second, there is no obvious cold air activity, the wind is small, and the atmosphere is relatively protective. Stability: Due to the stagnant flow of air, tiny particles in the air gather and float in the air;

3. Third, the sky is clear and cloudy, which is conducive to radiation cooling at night, making the humidity near the ground originally relatively high. The air saturates and condenses to form fog.

4. Car exhaust is the main pollutant emission. In recent years, there have been more and more cars in cities, and car exhaust is a factor in smog;

5 5. Secondary pollution produced by factories;

6. 6. CO2 and other pollutants emitted by heating in winter.

Question 10: Why is the smog suddenly so serious in Chengdu this year? In fact, it is similar everywhere

It is mainly caused by car exhaust, heating, etc.

If this is the case Be part of development