Deep wells are seepage wells, and industrial wastewater seeps into the ground through deep wells, polluting deep groundwater.

After the underground sewage continued for some time, residents of Nanwan Town began to show symptoms of Minamata disease.

Because of the little knowledge about Minamata disease, the cause of the disease was unknown to everyone at the beginning of the symptoms, and it was not until the mercury poisoning incident was confirmed some time ago that the masterminds at the Nanwan Electric Factory began to realize that it could be caused by industrial wastewater dumped underground.

The mastermind was preparing to dispose of the evidence of underground sewage discharge, but he didn't expect Nan Zhiqiao and his entourage to quietly enter the factory to investigate.

When the security guard informed the factory leaders that they had discovered an unannounced visit from the environmental protection department, the factory director immediately ordered the workshop director Li Daren to take people to destroy the evidence, the most important of which was the secret hillside courtyard.

The fat man Li Daren explained the whole thing, and when he finished speaking, the sky was already bright.

Liang Lei rushed over in time with the staff of the disease control and environmental protection departments, and after controlling the personnel at the scene, he collected evidence from the small courtyard according to Nan Zhiqiao's instructions.

The next thing is very simple, with the video of Nan Zhiqiao's unannounced visit and the samples collected, the laboratory test results will come out quickly.

As expected, the industrial wastewater of the Nanwan Electric Factory contains a large amount of heavy metal mercury, and the wastewater pollutes the deep groundwater through the seepage wells in the hillside courtyard, and the polluted groundwater flows into the wetland of the lower reaches of the Nanwan River through the underground river, and finally into the sea.

The polluted groundwater line, where there are deep wells, is pumped to the ground through artificial deep wells, which is also responsible for the high incidence of Minamata disease among residents around the two deep wells located on the waterline.

One of the deep wells located at the polluted waterline is in the Nanwan Seaweed Processing Plant, and the contaminated groundwater is used for the production and processing of seaweed, and the mercury levels in the finished seaweed products have been detected, so the health and food administration has issued a notice to recall all products from the Nanwan Seaweed Processing Plant.

Mercury levels in the lower reaches of the Nam Van River and estuary waters, which are polluted by industrial wastewater, also contain excessive levels of mercury.

Cats, dogs, and birds that ate these mercury-excessive foods also showed symptoms one after another, and the "suicide cat" that Nan Zhiqiao and his party first found in the fishing boat dock had a significantly higher methylmercury content in their bodies.

Laboratory tests have identified the source of the mercury poisoning incident, and the Nanwan Electric Factory has been seized and those involved have been detained, who will await further trial and punishment.

Contaminated groundwater has also begun to be cleaned up in accordance with the methods of environmental protection authorities, people with mercury poisoning have been treated in hospitals, mercury-contaminated food has been recalled by relevant departments, or warnings have been issued that it is not edible, and everything is on the right track.

The mercury poisoning incident is over, and Nan Zhiqiao and Ye Zhenzhen are also preparing to return to Beijing.

Before the two were ready to return to Beijing, Liang Lei prepared a lot of local products in Lianhai City, and stuffed the trunk of Nanzhiqiao's off-road vehicle to the brim.

Nan Zhiqiao looked at the souvenirs stuffed in the trunk, and frowned slightly, "It's too much, this is a bit of a suspicion of accepting bribes." ”

Liang Lei put the two large bags of squid shreds that couldn't fit in the trunk and put them on the back seat of the off-road vehicle, "Teacher Nan, you don't like to eat snacks, so these are not for Teacher Nan, this is for the younger brothers and sisters, this is not considered to be accepting bribes, I just borrowed your car to take it back." ”

Nan Zhiqiao had nothing to say, and watched Liang Lei move bags of snacks to the car by default.

Ye Zhenzhen helped to sort it out, looking at the wide variety of ready-to-eat seafood in the bag, and was a little hesitant.

After taking one of the bags of fish fillets and looking at the manufacturer, Liang Lei knew what Zhen Zhen was worried about, and hurriedly explained: "Master, you can rest assured, although these are all specialties of Lianhai City, the manufacturers are not Nanwan Town, there are many coastal towns in Lianhai City, these are produced in other counties and towns, and after laboratory testing, there is no excessive mercury content, so you can eat with confidence." ”

"That's good, I've been a little bit affected by the mercury poisoning incident in Nanwan Town these days, and when I see seafood, I think of those suicide cats, suicide dogs, and Minamata disease. ”

Liang Leihan laughed, "Master, during this time, I really trouble you and Teacher Nan." ”

"Don't bother, this is the responsibility of our disease control personnel. ”

"You and Teacher Nan are really a family, and they both speak in the same tone. ”

Carrying all the souvenirs to be taken away into the car, Liang Lei instructed Nan Zhiqiao and his wife: "Teacher Nan, you must notify me when you hold a wedding, I am going to drink wedding wine." ”

"Okay, I'll let you know. ”

——

Leaving Lianhai City, Nan Zhiqiao drove an off-road vehicle and returned to Beijing along the highway.

The two set off in the morning, got off the highway at noon, had lunch in a small town they passed through on the way, and after a short rest, continued on their way.

By the time the off-road vehicle drove into Beijing, it was already past three o'clock in the afternoon.

Nan Zhiqiao drove back to the China CDC laboratory first, put the souvenirs brought by Liang Lei in the conference room of the laboratory office area, briefly instructed the students, and was about to go back to the apartment of Longteng Villa, when Nan Zhiqiao suddenly received a phone call.

Caller ID is especially heartfelt.

As soon as the phone was connected, You Ke's anxious voice came, "Boss, Li Guoyi has an accident." ”

"Kuniichi?!What happened to him?"

Li Guoyi is a student of Nan Zhiqiao and the head of the microbial forensic laboratory of Guojing Medical Center, and Nan Zhiqiao is very worried when something happens to him.

Li Guoyi's wife's kindergarten didn't know what was going on, Li Guoyi rushed over to deal with it, but he had a conflict with the child's family, was beaten, and is now in the hospital. ”

"What hospital is he in?

"He is in JS Hospital, the specific situation is not clear, his wife called me to inform me, saying that the child's family is still making trouble in the kindergarten, she can't go, can't go to the hospital to take care of Li Guoyi, Guojing Medical Center still has something to deal with here, and I can't leave. ”

"Okay, got it, I'll go to the hospital. ”

After hanging up the phone, Nan Zhiqiao called Li Guoyi again.

Li Guoyi's mobile phone kept showing the shutdown status.

Usually Li Guoyi's mobile phone is turned on 24 hours a day, but it seems that something did go wrong today.

Nan Zhiqiao planned to send Zhen Zhen back to the apartment of Longteng Villa first, and when she told her about the situation, Zhen Zhen insisted on going to the hospital with her.

Knowing Zhen Zhen's stubborn and curious temper, Nan Zhiqiao did not object, and drove an off-road vehicle directly to the JS Hospital where Li Guoyi was.

After arriving at JS Hospital, the two found that the actual situation was very different from what You Kexin said on the phone.

Li Guoyi was not hospitalized, but suffered some skin trauma and gauze wrapped around his wrist.

Hospitalized was a child in kindergarten.

Seeing Nan Zhiqiao and Ye Zhenzhen coming from a distance, Li Guoyi explained the ins and outs of the whole thing.

It turned out that at about two o'clock this afternoon, in the kindergarten where Li Guoyi's wife Zhang Juan worked, a child suddenly vomited after waking up from a nap.