After Chi Shao woke up, everyone in the Teng tribe breathed a sigh of relief, and bright smiles appeared on everyone's faces again.
Because the weather this year is pretty good, the crops are growing luxuriantly, and the various farmed wild animals and birds are also breeding very fast.
It only takes a few more generations of breeding for these wild beasts and birds to slowly become domesticated into real poultry and domestic animals sooner or later.
On the east bank of Feiyu River, most of the processing workshops have been relocated one after another, and even the breeding areas have also been moved to the east bank, because Jiang Xuan wants to prevent domesticated livestock from spreading some diseases in advance.
However, with this, an obvious problem arises.
That's sewage.
Whether it is smelting bronze, tanning animal skins, purifying mineral salt, making pottery, etc., a large amount of sewage will be produced.
In the past, when the tribes were small, these workshops were also small and scattered, so the sewage phenomenon was not particularly obvious.
Now, as the Vine Tribe becomes larger and larger, each workshop becomes larger and produces more and more sewage.
In addition, the sewage from various workshops is now discharged almost randomly, resulting in a lot of land being polluted, and a foul smell can be smelled from a distance.
"It won't work like this. If we discharge it casually like this, sooner or later, the Feiyu River will turn into a smelly ditch. By then, we will need to get drinking water from other places."
Jiang Xuan walked in the primitive industrial zone on the east bank, looking at the polluted soil and smelling all kinds of pungent odors, and felt very bad.
Xian Er, the leader of the guard team at the second residence, accompanied him and said cautiously: "Chief, is it really that serious?"
The tribal people have never seen what real industrial pollution looks like, and they don't care much about sewage, thinking it is no big deal.
Before that, Xanthium had the same opinion. Although the smell was a little bit smelly, it didn't seem to be a big deal.
"If we continue to discharge indiscriminately like this, the situation will be ten or a hundred times more serious than what I said!"
Jiang Xuan knew that Xanthium didn't believe it, so he asked a guard soldier to go to the river and catch a few shrimps.
There were a lot of shrimps and crabs next to Feiyu River, and the soldier soon came back with a few big shrimps.
"Watch it."
Jiang Xuan threw the shrimps into a drainage ditch outside a garment workshop.
The soil in this drainage ditch has turned black, and the sewage is even more smelly. The prawns are the most sensitive to water quality. As soon as they enter the water, they crawl out desperately.
Jiang Xuan used a stick to carry them back into the water, and they continued to crawl out.
"See? Even shrimps can't survive in this kind of water. If you put a fish that can't crawl, it will die soon."
"Think about it carefully. If one day the river is filled with this kind of sewage, fish, shrimps, crabs, including water hyacinths that can turn into giant dragonflies, will all die or flee this area."
"The crops we plant will also not grow taller or bigger, or even die directly."
"What will we do then?"
Jiang Xuan's words finally made Xanthium and others take it seriously. Just thinking about that terrible scene makes people's scalp numb.
"Chief, what should we do?" Xanthium looked at Jiang Xuan, because he knew that Jiang Xuan must have a way.
"What to do? Of course it's to treat sewage."
Jiang Xuan pointed to all workshops, including the breeding area: "All places that produce sewage should have unified drainage pipes. The sewage should be collected and treated before it can be discharged into the river."
"Chief, what is a drainage pipe?"
"Drainage pipes are, of course, pipes that can drain water. We can bake ceramic drainage pipes, bury them underground, and cover them with soil. This way, where the sewage flows through, there will be no odor or pollution. That’s a lot of land.”
After listening to Jiang Xuan's words, Xanthium nodded in enlightenment. He had seen the tribes using bamboo to collect water from a distance, and thought that this drainage pipe should be similar in shape to a hollow bamboo.
"What about after collecting the sewage?"
"Filtration and purification, of course."
Xanthium scratched his head. He didn't quite understand what "filtration" and "purification" meant, but he didn't ask any more questions. He would know it by then.
Jiang Xuan first chose a relatively low-lying place to build a sewage treatment plant.
Later, he went to the pottery workshop and kneaded a circular pipe from clay.
This kind of circular pipe has an outer eaves on one end and an inner eaves on the other. By combining the inside and outside, the two pipes can be spliced together.
A bit like a clay chimney, but much larger and thicker.
Today's pottery workshops are no longer the two cross-ventilated kilns of the past, but two earthen kilns as high as a house, which can bake many large pottery at one time.
After Jiang Xuan made the first circular pipe ceramic blank, he explained the function of the pipe and the splicing method to the craftsmen.
This thing is not complicated, and there is already a ceramic blank as a model, so the craftsmen can understand it immediately.
"Don't worry, chief, we will try our best to burn enough pipes."
Jiang Xuan nodded and said: "Everyone, please do your best. Sewage treatment is very important to all of us. The people of the future will be forever grateful to you."
When Jiang Xuan said this, those craftsmen suddenly felt a sense of mission and became more motivated.
After leaving the pottery workshop, Jiang Xuan found the newly formed engineering team of the Teng tribe.
As tribes grew larger, building houses, building roads, digging ditches, etc. all required a large number of manpower.
Therefore, Jiang Xuan specially set up an engineering team to train a group of tribesmen into a professional team in construction.
In this way, whether it is building a house or building a road, the efficiency will be greatly improved and the quality will be guaranteed.
The leader of the engineering team, named Hongtu, is a middle-aged man who looks very honest and honest.
He has dark skin, is not tall, but is very strong, down-to-earth and hard-working, and does not care about things. Jiang Xuan likes this kind of person very much.
"Hongtu, I need your engineering team to go to the east coast to build a sewage treatment plant, then dig trenches, lay pipes, and guide all the sewage to the sewage treatment plant."
"Chief, how should we build this sewage treatment plant?"
"Simple, just build two houses and six filter tanks."
Jiang Xuan thought for a moment and then said: "You may not understand what I'm saying here, so let's go over there with me and I'll tell you slowly."
"good."
Jiang Xuan brought Hongtu to the east bank, first told him about the dangers of sewage, and then told him his idea bit by bit.
"Look, we dig a trench outside each workshop and lay ceramic pipes so that all the sewage can be collected through the pipes."
Jiang Xuan used the soil to shape a few more small pipes and demonstrated to Hongtu how to lay the pipes.
This thing is not complicated. After Jiang Xuan's simple demonstration, Hongtu understood it immediately.
Jiang Xuan can always come up with some new and practical things, and Hongtu admires him very much.
Later, Jiang Xuan took Hongtu to the location of the sewage treatment plant he selected.
"In this place, on the left, two houses can be built, slightly farther away, to house the tribesmen in charge of this place."
"On the right, along this slope, dig six large pools."
"The first pool is covered with large pebbles at the bottom, which is used to filter larger garbage in the sewage."
"The second pool is paved with smaller pebbles."
"The third pool is paved with coarser gravel, and the fourth pool is paved with finer gravel."
"Put a layer of charcoal at the bottom of the fifth pool and spread fine sand on top."
"The sixth pool has a layer of sand and a layer of charcoal, five layers in a row. In this way, the sewage flowing through the six pools should be turned into relatively clean water that can be discharged into the river. .”
After Jiang Xuan finished speaking, Hongtu nodded frequently. He tried to remember every word Jiang Xuan said. Although he could not fully understand why he did so, he believed in Jiang Xuan's wisdom.
"Let's do this. When I get back, I'll draw a diagram for you. Your engineering team can just follow the diagram. You don't have to bother memorizing it."
Hongtu breathed a sigh of relief and said, "It's best to have a picture."
"Okay, then I'll send it to you after I finish drawing it."
Jiang Xuan left the East Bank with Hongtu by boat and returned to the West Bank residential area.
Afterwards, he returned to his room, took out a blank animal skin roll, and began to draw seriously.
He clearly drew the location of each workshop and the location of the drainage pipes on the map.
Later, he also drew the construction area of the sewage treatment plant and the locations of the six filtering tanks.
In order to make it easier for Hongtu to understand, he even drew the thickness of the sand and gravel in each filter pool. In the two pools at the back, he even clearly drew several layers of sand and several layers of black charcoal.
In this way, it would be less easy for them to make mistakes when building the red soil.
After drawing a simple and easy-to-understand drawing, Jiang Xuan personally sent it to Hongtu and made sure that he fully understood what was drawn on the drawing.
The day after getting the drawings, Hongtu immediately led the engineering team to start work.
They built the house according to the drawings and then dug trenches. After completing these two tasks, the ceramic pipes were basically fired.
The people from the red soil belt moved these ceramic pipes over, and then spliced and laid them one by one according to Jiang Xuan's instructions. After they were laid, they tried to pass the water, and finally they were covered with soil.
After laying all the pipes, Hongtu led people to dig six large filter tanks, and according to Jiang Xuan's instructions, he laid different sand, gravel and charcoal in each filter tank.
These tasks took the engineering team more than two months.
More than two months later, the Teng tribe’s simple sewage treatment system was finally installed.
"Release the water!"
On the eighth day of September, following Jiang Xuan's order, all the sewage began to flow into the pipes and then into the filter tank.
Every time this sewage passes through a filter tank, a part of the impurities will be filtered out. When it passes through the sixth filter tank and is filtered by layers of sand and charcoal, the water has become clear again.
"Great, it worked!"
When Jiang Xuan, the engineering team, and many members of the Teng tribe saw the clear water flowing into the Feiyu River from the sixth filter pond, everyone was boiling.
Hongtu held up some treated water with his own hands, smelled it, and found that the smell was no longer pungent. He had a bright smile on his face and felt a sense of accomplishment in his heart.
From now on, the sewage from the original industrial area of the Teng tribe will be treated and then discharged into the river.
Moreover, Jiang Xuanhui assigned several tribesmen to take charge of this matter, not only to clean and maintain the filter pool, but also to encourage them to try more filtration methods to make the sewage treatment system more and more effective.
…
breeding area.
"Chief, after squatting for so many days, these ferocious bird eggs should have broken out of their shells, right?"
Several soldiers from the breeding team stared at the unicorn bird's nest in the wooden house with expectant looks in their eyes.
Dajiao said: "It should be almost there, but I can't say for sure. We don't even understand the raptor."
During the battle with the Bird Tribe, Dajiao obtained dozens of Bird Eggs. After obtaining Jiang Xuan's consent, he brought them back to the Teng Tribe, intending to hatch them and domesticate them slowly.
At first, he used colorful pheasants to hatch eggs from old hens, but the eggs were too big and the old hens felt something was wrong, so they ran away after squatting for two days.
Later, Dajiao focused on the relatively large unicorn birds, and secretly stole some of the female unicorn birds that were starting to incubate eggs.
He first took away the female unicorn bird that was incubating the eggs. The unicorn bird was very angry and pecked him a few times.
Then, he replaced the unicorn eggs in the nest with raptor eggs and put the female unicorn back.
The female unicorn bird was so eager to hatch her eggs that she did not leave the nest even if she sensed something was wrong.
Raptor eggs are more difficult to hatch, and these poor female unicorns took more than a month to hatch.
Although the breeding team would bring food to the nest from time to time to let them eat a little, the unicorn birds were squatting so hard that they lost their consciousness, their appetite was not strong, and they were getting thinner and thinner.
Dajiao would come over from time to time to take a look. These unicorn birds could hardly hold on any longer. If the eggs of the raptors could no longer hatch in a few days, in order to save these poor unicorn birds, they would have to give up hatching the eggs.
In the torture of waiting, two days passed.
Just when Dajiao was about to give up, the shell of a raptor egg suddenly shook slightly, and there was a small pecking sound.
The female unicorn bird apparently also noticed the situation of the egg. She gently pushed the egg forward with her beak, and then stared at the movement of the egg.
"It's about to break out of its shell."
Dajiao was overjoyed. He rubbed his hands excitedly around the bird's nest, using this method to relieve his nervousness and excitement.
The egg shook more and more violently, and the little raptor inside kept pecking at the eggshell, and finally pecked a hole in the eggshell.
Then, the little raptor continued to peck, making the hole bigger and bigger. Finally, with the help of the female unicorn, the little raptor finally broke out of the shell.
"The hatching was successful, it was successful!"
Dajiao looked at the little fierce bird trying to stand up. While he was excited, he finally breathed a sigh of relief.
This proves that birds of different species can incubate each other as long as the size difference is not too large.
At the same time, this group of fierce birds live in the vine tribe because they broke their shells, which is more reliable than the domestication of young birds.
After the first baby bird of prey came out, other birds of prey also broke out of their eggs one after another. In the end, the breeding team got twenty-eight baby birds of prey, while the other eggs failed to hatch.
(End of chapter)
