Chapter 49: Environment and Pursuit

1. Optimize the ratio

After the conversation between the four people, President Qian was lying alone in bed at night, he was thinking about a lot of questions, he was thinking that the word fraternity in the fraternity university should highlight the love for human beings, pay attention to and study the problem of environmental pollution, and be able to put forward reasonable suggestions to the environmental protection department for pollution control, that is, to contribute the greatest love to the healthy life of human beings. Pen Fun Pavilion wWw. ｂiquge。 ｉｎfo

In the days that followed, he and Mr. Wen flew to various parts of the world to find out the source of the pollution. They went to the most polluted city in the world to investigate the source of the pollution, and they found that one of the serious problems of air pollution in this city was that there were too many cars, and then they followed the source of the pollution all the way, they went to thermal power plants, winter central heating boiler factories, cement plants, steel plants, lime factories, construction sites, demolition sites, ------。

In order to get rid of the source of pollution, they also followed chemical factories, printing and dyeing factories, paper mills, pharmaceutical factories, breweries, and electronic materials factories--------。

They followed the source of pollution around the world, and when they returned to the office of the president of Pok Oi University, President Qian said worriedly: "If people can live in the Peach Blossom Garden, there will be no pollution!"

As soon as the two of them sat down in the office, two teachers, Wang Youcai and Wu Likong, also walked in. Wang Youcai sat down on a chair in front of his desk and said, "After the two of you left, Mr. Wu and I were also thinking about and discussing the pollution sources of environmental pollution. ”

Wu Likong, carrying a bag in his hand, stood up and said, "We started from the periodic table of chemical elements in the book. ”

When Principal Qian heard this, he immediately said, "Tell me about it." After listening to him, Wu Likong took out a large periodic table of chemical elements from his bag, and he opened the periodic table and put it on the table for everyone to see.

Mr. Wu pointed to the periodic table and said: "There are 118 chemical elements found in the world, and there may be new elements in the future, and we can see that there are 28 radioactive elements from the periodic table, and most of the chemicals produced by radioactive elements are toxic, and this toxicity is long-term." If these substances are left unsealed, the consequences for the natural environment will be catastrophic------。 ”

After Mr. Wu finished speaking, Wang Youcai sat there and continued: "At present, there are about 8 million chemical substances in the world, of which 70,000 are commonly used, and thousands of new chemicals are coming out every year. Many of these chemicals are toxic, and the production and use of toxic chemicals must be strictly managed safely and used scientifically.

President Qian added: "There is also the pollution of the environment by heavy metals. ”

Wang Youcai also said: "Before the 50s of the 20 th century, due to the limitations of the industrial and scientific and technological level, the industrial production of heavy metals was still limited, the impact on the environment was not too great, and the application scope of radioactive materials was very small. After that, with the acceleration of the world's industrial development and the improvement of the level of science and technology, the mining, processing, smelting and production of heavy metals are constantly increasing, and the impact on the environment is also increasing, and the mining, separation, concentration and use of radioactive materials are also increasing with the improvement of the level of science and technology, which has a certain impact on the environment, especially the occurrence of several major nuclear accidents in nuclear power plants, which is even more eye-catching and shocking.

Wen Jinyong pulled the chair he was sitting in closer to his desk and sat there and said, "What is clean energy? When people see smoke coming from chimneys and cars exhausting, they think that the energy conversion of smoke is unclean. The non-smoking energy conversion is clean, which makes many people think that the three non-smoking energy sources of nuclear, solar, and wind energy are clean energy. Let's first say that the nuclear raw material used in the nuclear energy reactor is uranium-235, and the uranium-235 raw material will have a certain impact on the environment in the process of mining, beneficiation, separation and enrichment, and the nuclear waste discharged from the atomic energy reactor will also have a certain impact on the environment, and if a nuclear accident occurs in the process of operation of the atomic energy reactor, it will be even more catastrophic. He said he wouldn't say anything about it.

Wang Youcai said: "Let me talk about solar energy in clean energy, we know that the use of solar energy relies on solar panels to realize photoelectric conversion to convert light energy into electrical energy. The cells in the solar panels, in its production process involve the use of chemicals, mainly using hydrofluoric acid, hydrochloric acid, isopropanol, hydrogen peroxide, etc., ammonia will also be used, these chemicals will produce wastewater and exhaust gas emissions in the process of use, which will cause pollution to the environment. ”

Wu Likong said with some emotion: "The use of atomic energy, the production of solar cells, I think this involves a question of quantity, if the number of nuclear power plants on our planet is small, then the number of nuclear raw materials mined, the number of nuclear fuel processing, the number of use, the amount of nuclear waste will be less, anything less will have a small impact on the environment, vice versa will be greater." ”

Wang Youcai hurriedly said: "The same is true for cell production, as soon as we say that solar energy is a clean energy, cell production plants have been launched in various places, and if we cannot protect the environment well in the production process, it will have a very bad impact on the surrounding environment." This is also like what you said, if there are fewer cell manufacturers, the impact on the overall environment will be smaller. ”

Wen Jinyong said: "It seems that among the above three clean energy sources, the use of wind power is the real clean energy, but the use of wind power accounts for a small proportion of the total energy consumption." ”

President Qian stood up at this time and said, "I think the overall structure of the world's electric energy production should have a reasonable optimization ratio. We say that black smoke from coal-fired thermal power generation is not environmentally friendly, nuclear power plants do not smoke to generate clean electricity, but coal for power generation in thermal power plants, coal mining and transportation have little impact on the environment, the price is low, and there is no impact on the environment after the shutdown of coal-fired boilers. The mining, ore processing, separation and concentration of the fuel used in nuclear power will have a certain impact on the environment, and the disposal of nuclear waste discharged from the power plant is also easy to pollute the environment, and the damage to the environment caused by the accident of the power station will be devastating. This is the pros and cons of the two power generation methods, in my opinion, thermal power generation, nuclear power, hydropower generation, solar power generation, wind power generation and other power generation methods should have a control ratio. In particular, thermal power generation, nuclear power, and solar power generation can not be one of the three power generation methods, and they should be controlled within an appropriate proportion in the production of electric energy, which will reduce the number of thermal power plants, the number of nuclear power plants must be controlled, and the production of solar cells can not be too much.

When the scientific ratio of various power generation methods is established, the black smoke emitted from thermal power generation will be reduced, the number of nuclear power plants will be small, the probability of accidents will be reduced, the amount of nuclear fuel produced will be small, and the disposal of nuclear waste will be easier. The amount of cells used is not large, and the production process has little impact on the environment, and the power provided by various power generation methods complements and restricts each other to achieve the purpose of environmental optimization. ”