"It's over, it's going to take a little time. ”

Xiao Ming asked the workers to build a sewage treatment tank here to save costs to the greatest extent and make use of the existing local resources.

For example, a submersible tank is not made of concrete, but is in the form of a deep pit. For example, solar heating panels were used for the heating of the first biological sewage treatment tank, which could be used to create a microbial accumulation pit underneath in the future and use the fermentation of waste organisms to heat up.

The local farmers were still relatively friendly, and did not ask for compensation because Xiao Ming's workers were digging pits by the ditch. And when everyone was working, they spontaneously brought tea and fruits to Xiao Ming and others.

In fact, most of the people of Xia Kingdom are relatively kind and simple, knowing that your actions are for their good, and they will not embarrass you.

Then it's a quiet wait.

After three o'clock in the afternoon, the early summer sun was quite warm.

The girls who study biology are still more able to endure hardships, and Wen Xueqing's face is full of sweat and sludge, and she does not have the grace of a girl in the city.

Wen Xueqing wiped the beads of sweat on her forehead with her sleeve and said, "It's almost time!"

Workers opened the valve in the upper part of the second biotreatment tank, and cool water flowed out of the upper part and into the third plastic pool.

Through the adjustment of technology, the water of the second biological treatment tank will automatically overflow from the upper part after being treated cleanly, and ensure that the overflowing water must meet the standard of Class I water.

Wen Xueqing said: "Test the water quality and pay attention to check the bacterial content. ”

Xiao Ming used his mobile phone to record every detail of the experiment, while Wen Xueqing opened his laptop to record the detailed experimental data.

Half an hour later, the test results came in.

The lab assistant said, "Perfect!"

Wen Xueqing said: "Give me the data." ”

Because it is a field experiment, the sealing is not strong, and the deposition time is short, so the treated water index is a little worse than that of the laboratory, but it still meets the Class I water standard and can be drunk.

Then hand over the data to Xiao Chu and let Xiao Chu enter it into the experimental software form.

As a result, the sewage treatment experiment, which lasted for eight months, was completed, and the data from the field test was handed over to Gao Siqi before the paper could be officially published.

The farmers gathered around, looked at the cool water in the plastic vat and asked, "Oh my God, why is the black water so cool?"

"Is there any chemical in this bucket?"

"It's amazing! The sewage treatment plant wouldn't be so clean. ”

Xiao Ming had no intention of removing the experimental equipment, and this small sewage treatment pond could benefit local farmers.

Xiao Ming introduced: "We are students of Jiangcheng University, and we are here today to disturb you to do a sewage treatment experiment, and now the experiment is successful. ”

Xiao Ming pointed to the sewage treatment equipment and said: "The sewage treatment equipment has been installed, and the microbial treatment method we use has turned the sewage into potable water after the treatment of two treatment tanks. You can use the water to water your vegetables, feed your livestock, and of course drink it yourself. ”

Someone couldn't bear it anymore, so he put a plastic bottle in it and took a sip and said, "Yes! It tastes much better than groundwater! Groundwater always smells metallic." ”

"I'll taste it too, I'll taste it!" more people crowded to the front.

"It tastes really good! I will get water here to drink in the future, and I don't have to waste electric pumping!"

"That's true!"

Wen Xueqing, who is very responsible, heard the villagers say that the groundwater she pumped up smelled metallic.

During the time of the sewage treatment experiment, Wen Xueqing was very sensitive to water quality and had a bad premonition.

Wen Xueqing looked at Xiao Ming, and Xiao Ming nodded.

Wen Xueqing immediately said: "Which of you will help me pick up a little bit of the groundwater you pumped, and I will help you test the water quality." ”

An old man with protruding eyes and a yellow face said, "I'll go." ”

A few minutes later, the old man came out with a mineral water bottle and said, "This is the water that I just received." ”

The groundwater is not as cool as expected, some of it is turbid and a little yellowish.

The villagers are actually drinking such water?

The old man also sighed and said: "A few years ago, our well was seven meters deep and there was water, but now we have to dig seventeen or eighteen meters deep to have water. This groundwater is this color, and we have to settle it before we drink it. ”

In fact, there is no need for the old man to say that Xiao Ming also knows that there are factories and enterprises around here, and the office buildings of enterprises are as low as five or six meters high, and more than ten meters high.

The first priority in the construction of high-rise buildings is to dig deep foundation pits for drainage, and the wells are 17 or 8 meters deep and have water, which is very good.

Wen Xueqing was busy testing the water quality, and twenty minutes passed, and it was not what she expected.

Handing the test results to Xiao Ming, Wen Xueqing said: "The iron and manganese content seriously exceeds the standard, which is thousands of times the drinking water standard, and this water cannot be drunk!"

The groundwater is seriously polluted, and the reason for such serious pollution is inseparable from the pollution of the surrounding enterprises, especially the iron ore and manganese steel deep processing enterprises. Xiao Ming even seriously suspected that these companies did not follow the sewage treatment procedure at all, and discharged the sewage directly into the ditch or directly into the ground.

Wen Xueqing's body trembled, with indescribable anger, she said: "Drinking this water is going to kill people!"

Subsequently, Wen Xueqing asked, "Are there any people in this village who have died of illness in recent years?"

Wen Xueqing opened the villagers' chatterbox.

"How not, people die every year. ”

"Liu Sanye just left last month, and Aunt Li also left two months ago. ”

"What is the disease?, liver cancer?" asked Wen Xueqing.

This surprised the villagers.

"How do you know!?"

"In the past few years, several people in the village have died of liver cancer. ”

"There are also two cirrhosis of the liver. ”

"Don't drink this water. Xiao Ming said: "The groundwater is no longer drinkable, it has been polluted. ”

The villagers said: "Where is it so serious, we boiled it and precipitated it to drink, it should be fine." ”

"What water do you drink without drinking groundwater?"

Xiao Ming handed a box of culture medicine to the villagers and said, "Let's drink the treated water here first, this is the culture agent, add one pack to each of the two treatment places every month." In addition, you have to continue to think of a way, and it is better to apply for tap water from above. ”

"Senior sister, let's go. Xiao Ming said: "The equipment is left here, and the instruments are packed up." ”

"But!" Wen Xueqing said, "Their groundwater is undrinkable, won't we help them?"

"I know. Xiao Ming's expression was very serious, "I can build a large-scale sewage treatment plant here, but there are many villages like this in Xia Kingdom, and the water pollution is only a small point, what about food, what about the air? ”

Wen Xueqing sighed and said, "I can only help them publicize it in the media, and I appealed." ”

When leaving, Wen Xueqing looked at the local indifferent villagers with a sour nose, the ignorant are fearless, and at the same time of economic development, what have we lost?

As Xiao Ming's convoy left the village, he felt some responsibility.

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