Let you recycle scrap metal and bring back a 10,000-ton battleship

Chapter 103 Seawater desalination technology?
After reviewing this series of materials, Luo Feng stretched and stood up.

I really don’t know if I don’t check it, I’m shocked when I check it.

In the past, Luofeng was generally in foreign countries, and even in coastal areas. He didn't know that the country was really short of water.

If it is an ordinary person, even if it is some awesome professor and researcher, what can he do if he knows this?It can only be hopeful and sighing, but now that Luo Feng has a Tianyuan planet, so many things, if he looks for it and uses snacks, he will definitely be able to do it.

After Luo Feng stretched his waist, he continued to check the information. In the world, there are actually many countries that lack water, and the Dragon Country is not particularly serious.

After all, the world's population is increasing, and things like water resources are becoming more and more tense.

Especially in many landlocked countries, there is a huge contradiction with regard to water resources.

Soon, Luo Feng also began to check how to solve the serious problem of water resources.

1. Save water

2. Improve utilization rate, develop technology, and reduce industrial water consumption

3. Develop modern agriculture and apply new technologies, such as drip irrigation. Reduce the extensive irrigation of traditional agricultural flood irrigation

4. Reduce water pollution.
5. Develop seawater desalination technology

The plan of saving water is indeed useful. As long as everyone saves a little, the effect is indeed obvious, but it only treats the symptoms but not the root cause.

And recycling water?This does help, but it still doesn't work.

Only by developing seawater desalination technology. This can be done once and for all.
"Desalination technology?"

When Luo Feng saw this, he stopped at these few words.

soon.

Luo Feng clicked in curiously.

Look at how the sea water is desalinated today.

In general, there are six methods.

(1) Freezing method
Freezing, that is, freezing seawater so that it freezes, and the salt is separated out at the same time that the liquid seawater turns into solid ice.

(2) reverse osmosis method
Usually also known as ultrafiltration, this method separates seawater from freshwater by using a semi-permeable membrane that only allows solvents to pass through and does not allow solutes to pass through.Under normal circumstances, fresh water diffuses to the seawater side through the semi-permeable membrane, so that the liquid level on the seawater side gradually rises until a certain height stops. This process is osmosis.If an external pressure greater than the osmotic pressure of seawater is applied to the seawater side, the pure water in seawater will reverse osmosis into fresh water.The biggest advantage of reverse osmosis is energy saving.

(3) Solar Act

The solar distillation method is to use a simple solar still.The still consists of a trough with a black porous felt-core floating hole, topped by a clear, edge-closed glass cover.Sunlight is projected through the transparent cladding onto the black insulated trough floor, where it is converted into heat.

(4) Low temperature distillation

Low temperature multi-effect distillation desalination technology

Low-temperature multi-effect seawater desalination technology refers to the distillation and desalination technology whose maximum evaporation temperature of brine is lower than 70°C. It is characterized in that a series of horizontal tube spray falling film evaporators are connected in series, and a certain amount of steam is input into the first effect.

(5) Multi-stage flash evaporation

Flash evaporation refers to the rapid evaporation of part of seawater at a certain temperature under the condition of sudden drop in pressure.Multi-stage flash seawater desalination is to evaporate the heated seawater in a plurality of flash chambers where the pressure is gradually reduced, and condense the steam to obtain fresh water.

Among these methods, people mainly use two kinds of distillation and reverse osmosis.

Large-scale distillation equipment is used to provide heat by using the heat energy released when the seawater itself cools down.

However, in contrast, such an approach does not seem to have the development trend of reverse osmosis.

However, no matter what method is used, when seawater is desalinated, a lot of concentrated brine will be produced, and these waste brine will greatly affect the ecological environment of the ocean.

There are many environmentalists who are full and supportive, and they hate such things, but Luo Feng looks down on them.

These people, as long as they are thrown into the desert and thirsty for three days and three nights, it is guaranteed that they will not yell.

As a human being, how can we acquire technology in this area if we don’t study it when there is no guarantee for basic water use?Whenever researching something, it will definitely harm the environment, but it is good to try not to harm it. It is absolutely necessary to study it. Your generation, or the next generation, does not need to worry about water resources, but what about the future generations?Are the water resources dry?

If everything is caused by population pressure, then those environmentalists may not be able to kill themselves or not have children to reduce the pressure on the earth.

In fact, what they should do most is not yelling all day long, cheating food and drinking, but really studying hard for the good of the earth, and researching some more efficient methods.

This is the solution.

Luo Feng continued to check the information on seawater desalination, and suddenly saw that Israel had made a huge breakthrough in the technology of reverse osmosis in seawater desalination.

And we are negotiating with the country to obtain technical authorization in this regard.
Seeing this, Luo Feng's eyes lit up slightly. Has there really been a research breakthrough in reverse osmosis technology in foreign countries?

Luo Feng suddenly thought of something, and opened his file library.

This is the list that Zheng Zeyao gave himself at the beginning. On it are some instruments needed by the military industry. There are two instruments in it, which are about reverse osmosis seawater desalination technology.
It's just that at that time, Luo Feng didn't pay attention to it, and there were too many instruments needed on the list, and he couldn't see it at all.

Thinking about it now, I just glanced at it at the beginning, and I had such an impression.

After thinking about it, Luo Feng stood up again and stretched fiercely.

Then he looked outside the door and walked out.

"Sir, what can you do?"

As soon as Zhu Debiao saw Luo Feng, he immediately saluted and asked questions.

"Don't be so sensitive! I have nothing to do! I just want to sleep!"

When Luo Feng said that, Zhu Debiao immediately saluted and said, "Sir, please sleep peacefully, I will guarantee safety to the death!"

"No, no, just want to say, when I sleep, I don't want to be disturbed by others. If there is something big, don't call me. I'm very tired today!"

"Yes!"

After Luo Feng dropped these words, he naturally closed the door and buckled it backwards.

After all, I am going to Tianyuanxing.

If someone opens the door and comes in, that's not good. At that time, the whole base will probably look for him, making the chickens and dogs restless.

At the same time, Luo Feng also notified Qin Dingguo not to look for him.

This is not my own home. When you disappear, it is not a big mistake to be careful.

Afterwards, Luo Feng took out the ring and went directly to his own planet Tianyuan.

(End of this chapter)