Become A Comprehensive Expert From My Dad

   Chapter 637 Purification of Water Resources

   After returning home.

  Ye Yu looked at the fresh water purifier materials he bought and started assembling them.

  The babies stared curiously, and followed Ye Yu's order step by step to assemble.

   Soon, a simple fresh water purifier was assembled.

   Immediately afterwards, Ye Yu took the children to the bathroom to get a glass of water.

   Then he grabbed a handful of soil from the balcony flower pot and put it in.

  The babies followed suit, and the water in everyone's hands was cloudy.

   "Come on, do it with Daddy now."

   "Pour this dirty water in first, and then observe carefully."

   "See how the dirty water changes color as it flows from top to bottom."

   "Now, close the three discs between the four filters."

   "This is to allow the dirty water to stay on each layer of filter material for your observation."

  The babies followed suit.

  This filter has four layers in total, with a disc stuck between each layer.

  The water above can continue to flow down only by rotating the disc to open it.

  Ye Yu analyzed: "The first layer of white filter material you see is called granite stone."

   "The granite stone is relatively rough, mainly to filter garbage with a relatively large diameter."

   "Moreover, due to the high wear resistance and hardness of the granite stone, it can be replaced once a year."

   "And it will not cause secondary pollution in water treatment, so it is widely used."

  The babies nodded thoughtfully: "No pollution is a good thing for environmental protection."

   Ye Yu nodded: "It's really smart."

   "Then now observe the water quality of the first layer, what do you see?"

  Ye Xiaoyi raised her hand first to speak: "I saw a few small black pebbles, staying in the first layer of filter."

   "The water is still cloudy at this time."

   Ye Yu nodded: "Next, open the first disc and let the dark yellow water flow down."

   "What do you see now?"

   Old Er Ye Shuangshuang said: "After the dark yellow water is filtered through the second layer of white matter, the color becomes orange-yellow."

   "There is a lot of yellow dirt covering this material."

   "But this water is still dirty."

   Ye Yu nodded: "Yes, this second layer of white substance is called porcelain sand."

   "Porcelain sand is finer than granite stone and therefore better able to filter large particles."

   "And it can also retain the minerals in the water, which are the nutrients our body needs."

   "In addition, porcelain sand can also sterilize and disinfect to a certain extent."

   "It will not cause secondary pollution like quartz sand."

   "Also, the service life can be as long as 10 to 12 months, so it is widely used."

   "Now let's open the second layer of discs and let the water flow down."

   "What do you see now?"

  Old Sanye Rourou said: "After the water reaches the third layer, the color is not so cloudy, but it is still quite dirty."

   "I don't seem to see any obvious sediment, the sediment seems to be absorbed away."

   Ye Yu rubbed her head: "Yes, so this layer of black substance is called activated carbon."

   "Activated carbon can absorb many harmful substances that are invisible to the naked eye."

   "So after reaching this layer, the water will look gradually clearer."

   "Usually, the tap water we use is sterilized with bleach."

   "I'll take you to the factory to see what it looks like when the factory uses bleach to sterilize water."

   "After sterilization, it leaves behind a harmful substance, chlorine, which is a carcinogen."

   "So you can't drink tap water because it will cause cancer."

  The babies looked flustered: "Tap water is terrible, Dad, we must drink boiled water and pure water in the future."

   Ye Yu smiled, this is what kindergarten teachers want children to understand.

   "Okay, now open the third layer of discs and let the water flow into the fourth layer of filter material quartz sand."

   "Let's see what happens next."

  Old four leaves Qingqing said: "Dad, the water on this floor has become clear!"

   "But I saw a lot of tiny floating objects in the water."

   "This is different from the pure water we drink."

   Ye Yu nodded: "Yes, quartz sand can only filter most of the tiny suspended matter."

   "And the reason why printing is widely used is that it also has a special function."

   "That is to adjust the pH of the water."

   "Simply put, if there is no quartz sand, the water quality may be too acidic or other flavors."

   "After using such water, it will destroy the acid-base balance in our body."

   "It will make us sick, so we must filter the acid and alkali to make the water harmless to the human body."

   "In addition, the dust in the water must be filtered with a finer thing."

   "Look down, there is a thin layer of filter paper under the quartz sand."

   "Actually, we evolved to use water, and this layer of filter paper plays the most important role."

   "This filter paper is amazing, it only allows water molecules to pass through."

   "Water molecules are pure water."

   "Like dust, it does not belong to water, so it cannot pass through filter paper."

   "Look at the small beaker below, is the water very clear?"

  The babies nodded.

   The old five Ye Dige said: "Dad, is this clear water now drinkable?"

   Ye Yu nodded: "Yes, now take out this water and taste it."

   Everyone did the same, and put the water in the last layer of the small beaker to your mouth.

   At this moment, the old Liu Ye Linger smacked her lips and frowned.

   "Dad, why is this water different from pure water? It doesn't seem as sweet as pure water."

  Ye Yu explained: "That's because some minerals and sugar are added in the last step of purified water."

   "We don't have that kind of thing, so there's no way to keep pure water in its most natural flavor."

   "However, the water filtered by such a water filter device already meets the drinking water standard."

   "It just doesn't taste as good as pure water."

   Ye Linger nodded: "Then why didn't Dad buy some candy just now?"

   "So we can get water that is as sweet as pure water."

   Ye Yu was amused by this childish remark: "Although pure water is sweet, it is not equal to sugar water."

   "Furthermore, the minerals needed in the water are very small, and we can't manually control this small amount."

   "Like I asked you to add half a sugar, how do you add it?"

   "You can squeeze dozens of them with your little hands. If the amount is too much, you can't drink the water, otherwise it will be harmful to the human body."

   "This principle is like drinking coke and beverages. Drinking less is not harmful to the human body, and it is quite delicious."

   "But if you drink too much, it will damage your body and you will get sick."

   "So every mineral that enters our body is quantitative."

   "This tiny amount is not something that we can easily control, and requires precise processing by machines to complete it."

   "So, the purified water we make is not as sweet as the ones sold on the market."

   Several babies understood instantly and praised Ye Yu one after another.

   "Dad, you are amazing, how do you know so much?"

   "Does the teacher know so much?"

   "Does other people's fathers know so much?"

   Ye Yu smiled, in fact he didn't understand it at first.

   But since he acquired the god-level freshwater device skills, he has all kinds of knowledge in his mind.

   Desalination of industrial wastewater and desalination of seawater are currently the most difficult projects in the world.

  The discharge of industrial nuclear wastewater will harm future generations and hinder the development of today's society.

  This is the most difficult project in our country at present, so countless people are racking their brains to figure out how to deal with industrial wastewater?

   In addition, although seawater desalination has already been widely promoted.

   But since the most commonly used method is the osmosis method, the filter paper needs to be changed frequently.

   In addition, the equipment required to purify the water in the factory is quite expensive and wears a lot.

   Therefore, everyone needs to conserve water resources, which is the greatest contribution to all mankind.

  If a new type of filter paper can appear, it can be like quartz sand or granite.

  Activated carbon and other substances are the same, and should be replaced only once a year or two years.

   Then, the cost of making pure water will be greatly reduced.

  Nature can easily solve the water problem of all mankind.

   Now in Ye Yu's mind, there is already a fairly simple way to fade it.

   He has to make the relevant machines as soon as possible.

   Go back and recommend it to the country, so that the country can promote and use it, and it can benefit mankind.

   (end of this chapter)