Doomsday: Humanity shrinks 100 times

Chapter 11 Water Filtration

Since Zou Yun's new ability needed to be converted from solar energy, the four decided to move the hot water equipment they had previously made to the middle of the road to prevent nearby plants from blocking the sunlight.

Lu Yuning and Wu Xiao brought buckets of water, filled the hot water container, and then covered it again.

Because they were unsure how much heat Zou Yunxin could generate at one time, the two of them only poured a shallow layer of water into it.

But visually it looks like a lot, like the amount of water in a whole washbasin.

If calculated proportionally, the amount of water their bodies need every day should be only one millionth of what it was before.

A small drop of water can meet the water needs for a day.

However, due to changes in body functions and increased body density, the amount of water needed should also increase significantly.

This can only be summarized slowly later.

After everything was ready, Lu Yuning nodded to Zou Yunxin.

Zou Yunxin had been prepared for a long time. He walked forward and placed his hand on the aluminum sheet of the water heater.

The three of them gathered quietly in front of the water heater, staring at the vent.

……

ten minutes later.

"How about it?"

"There's moisture!"

"The effect is good." Lu Yuning nodded.

As waves of steam gushed out, the water in the water heater finally boiled.

There were bursts of excited shouts near the small camp.

"But there seem to be a lot of things floating in the water." Wu Xiao said, staring at the water poured out of the water heater.

"It's some pollutants in the water." Zhang Xinyue said after looking at the impurities in the water.

"Still can't drink it?" Wu Xiao was a little disappointed.

"That's possible. It needs to settle first, and there might be some smell... It would be best if it could be filtered. This is also a necessary process for river water purification, but we just bypassed that step."

"Filter?" Lu Yuning asked.

"Well, we definitely can't get the materials needed for advanced filters right now, but we just need to filter out the large particles of impurities in the water. We can make a simple one." Zhang Xinyue nodded.

"You can try it, but I need you to explain the principle."

Zhang Xinyue nodded and gave a brief introduction to the design of the water filter.

Lu Yuning discovered that she had a rich knowledge reserve in certain areas, which was probably the unique interest of a top student.

According to her, if the only issue is turbidity, a sand filtration system is a simpler and less labor-intensive solution.

In fact, the boiled water can be drunk. Under the current conditions, simple filtering cannot eliminate bacteria, and there is no need to be so pretentious at this time.

But if Lu Yuning thinks it is not troublesome, it is better to make one.

After all, if you drink dirty water every day, you don’t know whether the turbidity will have an impact on your body. You can’t afford to get sick now, so you can only do the best you can.

The main material of the filter is quartz sand, which is readily available and can be found everywhere in the sand on the road. They don’t use much, just a slightly larger grain will do.

Lu Yuning needs to use his supernatural powers to break it.

Lu Yuning had already mastered the art of sand and gravel processing, so it didn't take much effort. He processed the quartz sand into two piles of materials.

The two piles of particles are of different sizes. Lu Yuning's current ability is limited to processing the materials into a few tenths of a millimeter at most.

After the sand and gravel were processed, Lu Yuning encountered a difficult problem, which was the water outlet part of the filter.

The more delicate the objects, the more difficult it is for his special ability to operate. Since the sand and gravel are only a few tenths of a millimeter, the filter at the water outlet must be finer to reduce secondary pollution.

After several attempts, he found that a softer material would be closer to his requirements. As a last resort, he decided to use grass blades for this part, but the durability was much worse and he estimated that it would need to be replaced every once in a while.

After several attempts, Lu Yuning was so tired that he felt a little dizzy. He finally managed to make a qualified water outlet, which looked like a funnel, thick at the top and thin at the bottom.

Lu Yuning felt that his special ability seemed to have improved a lot. It seemed that he would need to make more sophisticated items in the future.

The main part of the water filter is made into a cylindrical shape, with a layer of partition inside. Sand and gravel should be placed on the upper layer, and several small holes are opened on the partition to prevent too much sand and gravel from blocking the water outlet.

Spread slightly coarser sand on the bottom and then sprinkle fine sand on top.

Such a simple filter is made. The overall appearance is similar to the water tank made before, and it is cylindrical in shape.

It's just much smaller, with four supporting pillars extending from the bottom, so it can stand on the ground for easy water collection, and the water outlet is at the bottom.

Lu Yuning made some adjustments and felt that it was almost ready, so he prepared to officially start making drinking water.

The only thing you need to do is adjust the steps slightly: filter first and then boil it to prevent the bacteria on the sand from contaminating the water source again.

Lu Yuning took some water from the bucket and poured it into the filter, letting the water cover the sand.

After waiting for a long time, there was no response. Industrial quartz sand filters usually need to be pressurized. They obviously cannot make equipment that can withstand high pressure now. Even if they can, how to pressurize it is also a problem.

Therefore, the water can only flow out naturally through gravity, which is much less efficient.

Fortunately, after a while, a drop of crystal clear water finally flowed out of the filter.

Everyone was delighted as they watched the clean water droplets falling.

Since it takes some time for the water to filter, the few people could only wait.

At this time, Lu Yuning suddenly had an idea. He immediately pulled Wu Xiao over and briefly explained it to him.

They had some trouble carrying the water back and forth, and a lot of water was spilled in the process.

So when Lu Yuning came to his senses, he suddenly thought, I wonder if Wu Xiao’s spatial ability can be used to store this kind of liquid.

But Wu Xiao tried it and it didn't seem to work, but the water in the container could be put in together.

Although it’s a pity, it’s the only way. At worst, I can make more containers in the future.

What he mainly thought about was that the things in Wu Xiao's space could be taken out from designated locations around his body.

If possible, the water can be transported to a higher place, so that you may be able to build a water system that can cover domestic water and is convenient to use.

However, this is a huge undertaking and it would be difficult for just the four of them to complete it.

Moreover, the water tank cannot be made of grass leaves or plant materials, as they will rot in a few days.

"That should be enough, Brother Zou, let's boil some water!" Wu Xiao was the most impatient among the four people. He had been circling around the water filter since it was installed.

"Okay, watch me." Zou Yunxin didn't say anything more and quickly went back to his job as a boilerman, but he enjoyed it very much.

Thirty minutes later, the four of them looked at the clean, clear boiling water in the container with excitement.

This feeling is similar to what ancient humans felt when they entered the Stone Age.

The spiritual nourishment brought by creation is more likely to inspire people.

For this exciting moment, Lu Yuning specially made four exquisite small cups.

Each of the four people filled a glass of water.

"Cheers!" Zou Yunxin shouted happily and raised the cup in his hand.

Zhang Xinyue smiled and raised the cup in her hand to clink with his.

"Haha, elegance never goes out of style. Brother Yuning, let's be elegant too." Wu Xiao happily pulled Lu Yuning over.

Lu Yuning smiled and clinked glasses with him.

(End of this chapter)