Also my blue sky

The ancient poet wrote the day, "Jiangtian has no color and no dust"; modern writers write the sky, "the blue sky, spotless, crystal clear."

Unfortunately, we rarely see such a beautiful "day" now. Especially in the city or in the industrial area, it’s really unpleasant to be smoky and sullen. Faced with all this, you may not be able to sigh: "Fresh, refreshing, clear atmosphere, where have you been? Go to the atmosphere to cure the disease, and I am blue sky!

We do have a lot to do, and the most important thing is to try to reduce the amount of pollutants emitted.

The soot is mainly produced by the incomplete combustion of coal and oil. By improving the combustion method and fully burning the fuel, the amount of soot generated can be greatly reduced.

Try not to burn loose coal, develop coal gasification and liquefaction, and wash and reuse fuel containing a lot of ash and sulfur. The generated pollutants should be recovered, processed, and harmed by absorption, catalysis, adsorption, condensation, etc., and reused.

Even if it is a pollutant that runs into the atmosphere, try to mitigate their hazards. We must strengthen the city's greening work, plant more flowers and trees, and open up more parks and boulevards.

From the perspective of stopping global warming, controlling the growth of greenhouse gases, especially carbon dioxide gas, should use natural gas as fuel. If you can cancel a small chimney of a single household, centrally provide heat or jointly produce electricity and heat, you can save fuel and reduce carbon dioxide emissions.

If the amount of secondary aluminum used in the world is doubled on the existing basis, it can reduce 1 million tons of pollutants discharged into the atmosphere in one year.

There are more than 400 million vehicles in the world, and about 1.83 billion tons of carbon dioxide are discharged each year. In order to reduce the greenhouse gas emissions of automobiles, in addition to limiting the number of cars, saving fuel consumption, installing purification devices, we must also try to use relatively clean fuels such as methanol and ethanol to develop public transportation vehicles and electric vehicles.

Finally, the development of clean and clean new energy is the most fundamental way to reduce air pollution. For example, nuclear energy, solar energy, wind energy, biomass energy, geothermal energy and other energy sources are clean and clean, and the reserves are abundant, which has great development prospects.

The destruction of the ozone layer is a global problem. The United Nations Environment Conference decided that the production of CFC-depleting substances in the ozone-depleting layer will be phased out by the end of 1995. However, the life expectancy of chlorofluorocarbons is 50-100 years, and 15 million tons of chlorofluorocarbons have been depleted into the atmosphere. So far, only a small part of the ozone layer has been destroyed. Most of the rest are still in action, and the ozone layer will continue. It was destroyed and reached its peak in the first 10 years of the next century. As for the full return to normal natural level, it will take at least a century!

Air pollution is caused by human activities, and it must be solved by human beings. It’s just that time is waiting for people. We are better to act resolutely from now on, take measures to purify the atmosphere, and return my blue sky!