Humanity is missing, luckily I have billions of clones.

Chapter 168 Purify the Earth!
As early as when he had just defeated the Bluetook civilization and was making great technological progress, Li Qingsong had already devoted part of his energy to the Earth's ecological restoration project, and he had persisted in it for decades and has not stopped until now.

Although it is only a small part of Li Qingsong's energy, it is still an extremely huge project on Earth.

Although the Earth did not suffer much from the impact of the previous war from beginning to end, the ecological environment on the surface still collapsed due to Li Qingsong's huge industrial construction.

During those years, too much waste gas was emitted into the atmosphere and too much sewage was discharged into rivers, lakes, seas and soil.

Some radioactive wastes have even left some areas barren of vegetation, turning them into a dead end for life.

When the war ended, the surface of the earth had been destroyed by Li Qingsong, and large areas of desert appeared. The lakes turned into stinking water, and all the fish and shrimp in the rivers died.

Over the years, Li Qingsong demolished and removed a large number of industrial facilities, and then carried out dredging and purification projects on many rivers and lakes, digging out huge amounts of river and lake bottom silt, purifying it and then discharging it into nature.

Li Qingsong also took the initiative to adjust the earth's weather, adopted various methods to restore precipitation, scattered plant seeds in the mountains and forests, cultivated various wild animals through artificial breeding, etc., and made every effort to restore the earth's ecology.

Today, Li Qingsong has completed most of the surface work.

But the effect still doesn't seem to be very good.

"Oh, the air pollution was so severe during that period."

Li Qingsong sighed softly. "I thought that after completing the work on the ground and water bodies, the air pollution would gradually decrease with the ecological self-repair process. I didn't expect that I overestimated the self-repair ability of the Earth's ecosystem."

At this moment, the Earth's atmosphere is filled with not only the waste gas and toxic substances emitted by Li Qingsong's large-scale industrial activities, but also stray bullets and artillery shells from space. Although they cannot penetrate the atmosphere and hit the surface, they burn in the atmosphere, spreading the heavy metal elements and toxic substances that make up themselves into the atmosphere.

The combination of the two even makes the Earth's atmosphere slightly toxic at this moment.

Such huge pollution cannot be repaired by relying solely on the self-repair ability of the earth's ecology.

Without repairing the atmosphere, no matter how hard Li Qingsong works on the surface, it will probably be of little use.

This is a very complicated, difficult, and troublesome matter. At this moment, restoring the Earth's ecology seems to have no meaning to Li Qingsong.

After all, he is about to leave the solar system, and it is hard to say when he will be able to come back.

but……

Li Qingsong still made up his mind without hesitation.

"We must restore the Earth's ecology! There's no other reason. The Earth is my home, the home of human civilization!

Before, in order to defeat the enemy, I had to personally destroy the Earth's ecology. Now, since I have sufficient industrial capacity, if I don't do it because it's too troublesome, I will never forgive my compatriots after I restore human civilization. I will never forgive myself!

The target of that intelligent civilization is the omnic disaster. If I escape, they will most likely not be interested in the solar system.

Things like the invasion of the Blueprint civilization are even more unlikely to happen.

As long as I repair the earth's ecology, there is a high probability that life on earth will be able to live peacefully on earth.

So, do it! "

Having made up his mind, Li Qingsong immediately began to study the plan to purify the earth's atmosphere.

There is only one feasible option at present, which is to throw the corresponding chemical substances into the earth's atmosphere, let them combine with toxic and harmful substances in the atmosphere, and then turn into solids and settle down.

In this way, the atmosphere can be purified.

The only difference lies in the choice of chemical substances and the specific method of dispensing. However, after detailed simulations, Li Qingsong ultimately rejected this option.

The reason is simple. The secondary disasters are difficult to control, and the secondary damage to the earth's ecology is too great, and it may even be counterproductive.

This is a problem that Li Qingsong cannot solve with his current technical means.

After replacing hundreds of chemical substances and conceiving hundreds of purification methods, all of which were rejected by the model, Li Qingsong gritted his teeth and made the final decision.

"Since these methods don't work, let's just use the most primitive, crudest, and simplest method!"

What is the simplest air purification solution?
Obviously, use physical or chemical methods to purify it bit by bit.

Collecting air, purifying air, and discharging air is just this process.

Purifying one cubic meter of air means emitting one cubic meter of air. Purifying it bit by bit, eventually the entire earth's atmosphere will be purified!

The total mass of the Earth's atmosphere is as high as 5150 trillion tons.

Li Qingsong's scheduled departure time is about 30 years away.

Assuming the total mass of the atmosphere to be purified is 60%, or approximately 3090 trillion tons—after all, due to the limited distribution of the atmosphere, Li Qingsong cannot purify all of it. However, calculations show that purifying only about 60% would already reduce toxic and harmful gases in the atmosphere to a certain level, significantly minimizing the impact on Earth's ecology.

In 30 years, 3090 trillion tons of atmosphere are released, which is an average of 103 trillion tons per year, or about 326 million tons per second!

It's done!

Faced with this huge number, Li Qingsong did not hesitate and immediately mobilized the corresponding industrial forces to start producing the machinery needed for this purification work, and then transported it to the earth.

Li Qingsong searched for about 1 intersection points of air currents - because there are strong winds blowing here all year round, the gas flows at an extremely fast speed, so he began to build an extremely large facility here.

This facility is hundreds of meters high, over 200 meters long and wide, and is filled with complex machinery and pipelines.

There is a huge hole in the middle of it.

The hole runs through both sides of the entire facility, with a diameter of 60 meters and a cross-sectional area of more than 2800 square meters.

There are more than 20 huge fans inside it, and the blades of each fan are nearly 30 meters long.

At this moment, driven by the surging electricity from the nuclear fusion reactor, the facility finally began to operate.

The more than 20 huge fans began to rotate at high speed, making a huge and dull buzzing sound.

So, under the blowing of the strong wind in nature and the high-speed rotation of the fan, the rolling air rushed in.

As they passed through this huge cavity, the various purification methods that Li Qingsong had arranged in advance, such as electrostatic adsorption, chemical reaction, film penetration, and laser burning to destroy molecular structure, began to take effect, directly absorbing or destroying toxic and harmful substances in the air and converting them into harmless chemicals.

After completing this series of purification, the air is discharged into nature from the other end of the cavity.

Endless air began to converge towards this hole, and its speed was even close to 100 meters per second!
Based on this speed, the average amount of air processed and purified by this cavity is more than 300 tons per second!

Li Qingsong has built more than 10,000 such giant air purification facilities on Earth!
At this moment, with sufficient power supply from many nuclear fusion power plants, more than 10,000 air purification facilities began to operate at full power.

(End of this chapter)