Chapter 575: The fish that grew up eating cadmium water entertains its benefactor
The green tide surges and fills the valley.
The weeds grew like crazy. They overflowed the road, covered the houses, and sucked up water. One moment they were over people's heads, the next moment their roots were climbing, and the next moment more plants sprouted spontaneously.
In the blink of an eye, the appearance of the small village was not much different from the villages Gretel had seen in his previous life, where the villagers had moved away and only the houses were left.
In the distance, the exclamations and shouts of the villagers were blown by the wind.
In Grete's mind, this green storm seemed to have lasted for ten thousand years, and seemed to be as long as just a moment. After a long time, he leaned back, spread out his limbs, and lay on the grass. His thin clothes were already
Completely soaked in sweat.
He lay with his eyes closed for a long time, and finally gathered some strength to look at the gray clouds in the sky:
"Teacher, I can only do this one step."
Repairing soil pollution is an extremely difficult and lengthy process. As far as Grete knows, the methods used in previous lives, without exception, are extremely costly and extremely slow to produce results...
And he can't do most of them. For example, the soil-for-soil method, the leaching method, the solidification and stabilization method, the electric repair method, and so on.
In the soil replacement method, there is not so much soil;
The leaching method only leaches heavy metals on the surface into the groundwater, which can also cause groundwater pollution;
Regarding the electric repair method, first of all, Grete could not prepare such a large amount of electrolyte. Secondly, he did not know how much voltage to pass through, and he could not generate electricity with his bare hands like the teacher;
For the solidification and stabilization method, forgive me, he only knows roughly adding chemicals to the soil. What exactly should be added? Sorry, goodbye.
Only the phytoremediation method can be tried. After all, as a natural spell caster, it can still be done to promote the growth of weeds.
He lay still, but Elder Erwin walked in the grass, identifying each tree. Recognize one tree, turn around and chat with Appa, recognize another tree, then go back and chat with Appa...
Finally, with the help of Appa, Elder Erwin pulled out a plant about a foot tall with small white flowers. Well, this thing consumes less magical power and has a particularly good effect of accumulating pollution.
Mainly because Apa said "the taste is very strong". He brought it to Gretel and started teaching the students:
"Well, this round-leaf Arabidopsis magic consumes less energy and is particularly effective in accumulating pollution. And it can grow for many years. Once it grows, cut it off, and then grow another one... Remember this, Grete, and we will repair the lead and zinc in the future.
It is most convenient to use it to prevent mine pollution, and its brothers and sisters can also..."
Grete rolled half a circle on the ground with difficulty, looked up at the grass, and groaned in pain.
These things, they recognize me, but I don’t recognize them, what should I do?
But you have to remember. Phytoremediation does not work overnight. It does not mean that these plants can grow out and remove heavy metals from the soil.
It takes many springs and autumns for plants to grow over and over again, enrich heavy metals, be recycled and processed, so that the heavy metals in the soil gradually disappear. This time, the spell can only be reduced a little bit.
"Grete, what to do with these grasses?"
Grete glanced at the long grass that had just grown all over the mountains and fields, and wanted to hold his head and groan. You don't need to have studied soil remediation to know that these grasses cannot be allowed to wither and rot in place, otherwise heavy metals will come from the soil.
I have to go back to the soil.
But, let him get rid of all these grasses?
"Well, in theory, we should recycle them all, carbonize them, and then extract the metals... It would be possible to use drying techniques, but..."
It's not that it can't be done, but just after they were spawned, they were killed with magic. Gretel felt a dull pain in his stomach just thinking about that scene.
And more difficulties are coming one after another. In the distance, the shouts and cries of villagers and miners spread along the road:
"Pastors! Our fields, fields, are all overgrown with weeds..."
"Priests, the roads leading down from the mining area are overgrown with weeds, making it difficult to transport the ore..."
oh.
As long as it's full, it's full.
Anyway, the food, vegetables, and all the products grown on this land are inedible. If eaten, heavy metals will continue to accumulate. As for the roads in the mining area, the grass will be cut at most...
Just cut the grass...
Gretel calmly took out a gold coin. After thinking about it, he put it back and took out two silver coins:
"Well, I'll hire you to cut the grass. One load of grass in this valley costs 2 copper coins, and five loads costs one silver coin. After cutting them all, the money earned will be enough for you to buy food for a year. How about that?"
"
Two copper coins can buy a pound of flour, or a loaf of baked bread. If you use it to buy unground wheat, you can buy more. A strong laborer can easily cut several loads of grass a day.
Grete crossed her hands happily.
If you let others cut it, I will only be responsible for carbonizing or sealing the stove. You can also burn it directly. Well, a gentleman is far away from the kitchen. As long as I didn't kill him, he didn't kill him...
With a wave of his hand, the mountains and fields were covered with weeds. Looking at the amount, it would not be a problem at all if they had enough food for a year.
Elder Erwin added with a smile:
"I will give you money on the spot for the grass you cut today. In the next few days, I will ask a priest from the God of Nature to come over and count the haystacks and give me money. Is that okay?"
That's great! The priests of the God of Nature have always had a good reputation among the poor. They are responsible for distributing money, and no one has to worry about embezzling money!
The villagers went back with great gratitude. Soon, cheers broke out, and all the villagers who had time and could move around came out.
If you can’t mow the grass, you can still pull it!
Elder Erwin smiled and nodded to his disciples. Well done, destroying their fields was a good thing!
In order to give money, Grete stayed in the village for another night. Men, women, old and young all came to the battle, and the miners also put down their work and worked hard.
By the time it got dark, the valley had been completely barren, and the threshing floor at the entrance to the village was so piled with weeds that it was almost impossible to stand. And Gretel had given away dozens of silver coins!
Got money!
I have money to buy food!
You won’t go hungry this winter or next spring!
If I work hard for a few more days and clean up the whole valley, I can save money to make some clothes, and maybe even repair the leaky roof!
Cheers came one after another. Gretel walked slowly on the threshing floor with a smile, throwing spells randomly:
Dehydration!
Dehydration!
Dehydration!
"By the way, do me a favor and sweep up all this carbon dust!"
The villagers rushed out. Elder Erwin paid attention:
"What do you want these for?"
"Take it back and refine it!" Gretel said confidently:
"Concerning the toxicity of cadmium to the human body, soil pollution, and treatment, I can use it for experiments to publish articles! I spent so much money, I have to find a way to make some money back!"
However, for the villagers, they didn't understand what it was like to conduct experiments, publish articles, and ask for rewards from the Magic Council after publishing articles. What they saw was that only Grete and his party were working hard to help the people here one by one.
pediatric treatment;
In order to repair the water and soil here, a large-scale magic spell was launched to spawn plants throughout the valley;
Worried that they would have no food to survive the winter, they used cutting grass as an excuse to hire people and pay them...
What a good man!
The priests of the Deistic Church are all very good people!
Since they were good people helping them, the villagers naturally had to do their best. It was rare for these priests to stay overnight again, and they brought out whatever good things they had!
That night, under the dim oil lamp, Gretel saw wooden bowls, wooden plates, wooden basins, and seven or eight dishes piled up on the table. There were green wild vegetables, which looked like they had only been blanched in water, with a little bit of oil and salt.
nothing;
There is dried meat with an extremely suspicious color, it may be smoked, and the carcinogen content is estimated to be very scary;
There must be a fish that was just caught in the afternoon. Gretel didn't even need to dissect it, but he saw that its spine was bent, its ossification was incomplete, and it looked like "I have accumulated countless times of cadmium, and I am already terminally ill"...
Can these things be eaten?
Gretel seemed to remember that the concentration of heavy metal pollution in animals seemed to increase exponentially compared to that in plants... How many times was it? 10 to the third power, the fourth power, or the fifth power?
If I eat it myself, I can’t eat it; if I give it to the villagers, these things contain a lot of toxins! I feel that no matter what I do, my conscience will hurt...
He glanced at Elder Erwin. Elder Erwin's face remained calm as he picked it up and ate it. Apparently he was used to receiving gratitude from the villagers.
Looking at Serila, she walked out of the house with a bored look on her face. Although the villagers looked regretful, they were not surprised. Apparently they felt that "a young lady should be picky";
Looking at Apa again, he had already begun to eat grass. As he ate, the white light on his body shone softly. He was clearly throwing detoxification spells on himself.
You, you are cruel!
Okay, okay, cadmium accumulates mainly in the liver, kidneys and bones. If you eat fish, you don’t eat these three anyway. The accumulation of toxins in the muscles is still relatively small...
Besides, isn’t there a detoxification technique?
eat!
Gretel forced himself to work hard to fill his stomach. By the next day, he began to thank himself for his choice:
The villagers' food was unpalatable, and the city lord's banquet was even more unpalatable!
"So this time it's completely cured, right? The strange disease won't happen again, right?"
Lord Joan made a speech of gratitude, raised his wine glass, and asked seriously. Gretel looked at the veal, foie gras, and fried cod in front of him, and he couldn't eat it for a moment.
"It will happen again. It will definitely happen again. Five years, ten years, fifteen years... As long as the lead-zinc mine remains open, as long as the workshop remains open, toxins will continue to accumulate in the soil and water sources. Strange
Sickness or something will definitely happen again."
He looked at the city lord earnestly:
"Can we strengthen the protection of that workshop so that the wastewater is not discharged directly into the soil?"
"How can it be!"
****
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