Chapter 103 Desalination Technology?
After checking this series of information, Luo Feng stretched and stood up.
You really don’t know if you don’t check it, but you will be shocked if you check it.
In the past, Luofeng generally lived abroad and in coastal areas, and had no idea that there was actually a water shortage in the country.
If it were an ordinary person, even an awesome professor and researcher, what would they do if they knew about this? I can only look forward to it and sigh, but now that Luo Feng has a Tianyuan planet, he can definitely do many things if he looks for it and uses some snacks.
After Luo Feng stretched, he continued to check the information. In fact, there are many countries in the world that are short of water, and the Dragon Kingdom 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, huge conflicts have arisen regarding 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 agriculture with full 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 develop seawater desalination technology. This can be achieved once and for all.
"Seawater desalination technology?"
When Luo Feng saw this, he stopped at these words. superior.
Soon.
Luo Feng clicked in curiously.
Look at how the sea water is desalinated today.
Generally, there are six methods.
(1) Freezing method
Freezing method, that is, freezing seawater to freeze, and the salt is separated out when the liquid seawater turns into solid ice.
(2) Reverse osmosis method
Also known as ultrafiltration method, 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 method
The solar distillation method uses a simple solar still. The still consists of a trough with a black porous felt-core floating hole, topped 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 brine is lower than 70°C. It is characterized by a series of horizontal tube spray falling film evaporators connected in series Up, a certain amount of steam is input into the first effect, and the evaporation temperature of the latter effect is lower than that of the previous effect. 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 suddenly evaporates under the condition of a sudden reduction in pressure of seawater at a certain temperature. 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 basic human water supply is not guaranteed? 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? What about the water resources drying up?
If everything is caused by population pressure, then it is not necessarily true that those environmentalists will take matters into their own hands or not have children to reduce the pressure on the earth.
In fact, what they should do most is not just yelling and cheating all day long. 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. Foreign countries have actually made research breakthroughs in reverse osmosis technology for seawater desalination. ?
Luo Feng suddenly thought of something and opened his file library.
This was the list that Zheng Zeyao gave himself at the beginning. It contained some instruments needed by the military industry. There were two instruments in it, which were about reverse osmosis seawater desalination technology
But at that time, Luo Feng didn't pay attention, 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.
Immediately looked out the door and walked out.
"Sir, what can I do for you?"
As soon as Zhu Debiao saw Luo Feng, he immediately saluted and started asking.
"Don't be so sensitive! I have nothing to do! I just want to go to bed!"
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, no, I just wanted to say , 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!”
Luo Fengdu! After saying these words, he naturally closed the door and locked it.
After all, he was going to Tianyuan Star.
It would be bad if someone opens the door and comes in. Then the whole base will probably be looking for you, making the chickens and dogs restless.
Luo Feng also informed Qin Dingguo not to look for him either.
This is not my home. It’s okay to be careful when disappearing.
Afterwards, Luo Feng took out the ring and went directly to his Tianyuan planet.
(End of this chapter)