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Chapter 103 Desalination Technology?

After checking this series of information, 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 usually lived abroad, and even in coastal areas, and had no idea that there was actually a water shortage in the country.

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 increasingly tense.

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

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

1. Save water

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

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 effective. As long as everyone saves a little, the effect is indeed obvious, but it treats the symptoms rather than the root cause.

And recycling water? This is indeed useful, but it still doesn't solve it.

Only by developing seawater desalination technology can we solve the problem once and for all.

"Desalination technology?"

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

soon.

Luo Feng clicked in curiously.

Look at how the sea water is desalinated today.

Generally speaking, 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 called ultrafiltration, this method uses a semi-permeable membrane that only allows solvents to pass through but does not allow solutes to pass through to separate seawater and fresh water. Under normal circumstances, fresh water diffuses to the seawater side through the semipermeable membrane, causing the liquid level on the seawater side to gradually rise until it reaches a certain height. This process is called osmosis. If an external pressure greater than the osmotic pressure of seawater is applied to the seawater side, the pure water in the seawater will reverse osmosis into the freshwater. The biggest advantage of reverse osmosis is energy saving.

(3) Solar energy law

Solar distillation uses a simple solar still. The still consists of a tank with a black porous felt-core floating hole, and the top of the tank is covered by a transparent, edge-sealed glass covering. Sunlight passes through the transparent covering layer and is projected onto the black insulated bottom of the trough, where it is converted into heat energy.

(4) Low temperature distillation

Low temperature multi-effect distillation and desalination technology

Low-temperature multi-effect seawater desalination technology refers to the distillation and desalination technology in which the maximum evaporation temperature of salt water is lower than 70c. It is characterized by connecting a series of horizontal tube spray falling film evaporators in series, using a certain amount of steam to input the first effect, and the subsequent one The evaporation temperature of each effect is lower than that of the previous effect, and then through multiple evaporations and condensations, a desalination process of distilled water that is many times the amount of steam is obtained.

(5) Multi-stage flash evaporation

Flash evaporation refers to the phenomenon that part of the seawater evaporates rapidly when the pressure of seawater at a certain temperature is suddenly reduced. Multi-stage flash evaporation seawater desalination is to evaporate heated seawater in multiple flash evaporation chambers with gradually decreasing pressure, and condense the steam to obtain fresh water.

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

Large-scale distillation equipment is used to provide heat by utilizing the heat energy released when the sea water itself cools down.

However, in comparison, this method does not seem to have a development trend as the reverse osmosis method.

However, no matter what method is used, a lot of concentrated brine will be produced during seawater desalination. This waste brine will greatly affect the marine ecological environment.

There are many well-fed environmentalists who hate this kind of thing, but Luo Feng looks down on them.

As long as these people are thrown into the desert and thirsty for three days and three nights, I guarantee that they will stop yelling.

As a human being, how can we obtain technology in this area without doing research when there is no guarantee of basic water supply? Whenever you study something, it will definitely harm the environment, but just try your best not to harm it. You absolutely must study it. Your generation, or the next generation, does not have to worry about water resources issues, but for generations to come, Woolen cloth? The water resources have dried up?

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 just talk nonsense all day long and eat and drink. They should sincerely study hard and research more efficient methods for the good of the earth.

This is the fundamental solution.

Luo Feng continued to check the information about 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 area.

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 Zheng Zeyao first gave himself. It contains some instruments needed by the military industry. There are two instruments in it, which are about reverse osmosis seawater desalination technology.

But at that time, Luo Feng didn't care, and there were too many instruments required on the list, which he couldn't even read.

Now that I think about it, I just took a glance at it and had such an impression.

After thinking for a while, Luo Feng stood up again and stretched hard.

Then he looked out 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 this, Zhu Debiao immediately saluted and said: "Sir, please sleep peacefully. We will protect your safety to the death!"

"No, no, I just want to say that I don't want to be disturbed when I'm sleeping. If there's anything big, don't call me. I'm very tired today!"

"Yes!"

After Luo Feng said these words, he naturally closed the door and locked it.

After all, I am going to Tianyuanxing.

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

Luo Feng also informed Qin Dingguo not to look for him.

This is not your home, and there is nothing wrong with being careful when disappearing.

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