How to control smog in China?

Minimize the dust caused by vehicles outside the city and construction vehicles. When dusty vehicles outside the city enter the city, a link of washing tires and chassis with water spray is set up at the gate toll station, and a link of covering and cleaning tires and chassis is set up when construction vehicles enter the city. However, many cities often only have the terminal punishment mechanism after entering the city, but there is no cleaning and prevention mechanism when entering the city.

The environmental pollution control objectives of many cities in China still deviate from the control of particulate smog. In terms of environmental pollution control, it is in line with western standards. For example, Euro-2, Euro-3, Euro-4 and even Euro-5 standards have been included in the regulatory rules for a long time. Vehicles that do not meet the above exhaust pipe standards cannot leave the factory, and substandard chimneys are pushed down and moved, but these management rules are only effective for gas pollution.

Extended data

The smog in China is heavy, and the cold air activity that affects China every month is weaker than normal, and the wind speed is smaller. The frequency of atmospheric stability conditions in most parts of central and eastern China is obviously high, especially in North China, which is as high as 64.5%, the highest in 10 years, which is easy to cause pollutants to accumulate in the near-surface layer, thus leading to frequent haze weather; The high background concentration of aerosol in winter in China is conducive to the formation of smog;

Smog weather will make the near-surface atmosphere more stable and aggravate the development of smog and air pollution. The formation of haze weather is not only affected by meteorological conditions, but also related to the increase of air pollutant emissions. It is suggested to further strengthen the control and protection of the atmospheric environment, especially to strengthen the consultation and coordination among various departments, and to improve the emergency emission reduction plan for atmospheric pollutants under static weather conditions.

Baidu encyclopedia-smog