At 13: 00 local time on August 24, Japan,
Fukushima Daiichi nuclear power plant "processed"
Nuclear polluted water starts to discharge into the sea.
After 17 minutes,
Nuclear polluted water flows into the Pacific Ocean through the subsea tunnel.
Since the Fukushima nuclear accident
The cumulative collection of nuclear contaminated water has reached more than 1.3 million tons.
According to Japan’s sea-discharging plan
It is expected to last for 30 years
This will affect you and me.
Things that affect everyone around you.
Everyone is very concerned.
What’s in the water that discharges into the sea?
How big is the impact of nuclear sewage on human body?
How do we deal with it?
What’s in the water that discharges into the sea?
Gao Zhiguo, president of the China Society for the Law of the Sea and former judge of the International Tribunal for the Law of the Sea, said: From the accident at the Fukushima Daiichi nuclear power plant in 2011 to Japan’s decision to discharge into the sea in 2021, the nuclear polluted water has accumulated about 1.38 million tons, and it is increasing by about 100 tons every day, and its more than 1,100 water storage tanks will have no storage space this year. Because Japan has never disclosed real data, there are about 1.5 million tons of nuclear polluted water now, and the discharge time may be as long as 30 to 50 years. Now the biggest concern of the international community, including neighboring countries and stakeholders, is that these nuclear radioactive elements and substances will enter the marine environment. Japan has been misleading that "the problem lies only in tritium", but many scientists in the world have a consensus that there are as many as 64 kinds of nuclear radioactive elements in nuclear polluted water, and more than 70% of them exceed the standard, and it is difficult for multi-nuclide equipment to completely dispose of them.
After these radioactive elements enter the marine ecological environment, tritium may not be the most dangerous, but carbon -14 and iodine -129 are the most harmful to human beings and marine life. The half-life of carbon -14 is about 5370 years, and the half-life of iodine -129 is even longer, about 15.7 million years. Carbon -14 will accumulate in marine organisms, that is, fish, and the abundance or concentration of carbon -14 accumulation may be 50 times that of tritium.
Seiji Goto, a Japanese engineering and technical expert, said that he was engaged in the containment design of nuclear reactors and had been paying attention to the dynamics of the Fukushima nuclear polluted water discharge plan. He believes that the so-called "treated water" treated by multi-nuclide removal equipment not only contains tritium that cannot be removed, but also contains a variety of other radioactive substances, which can not be underestimated after entering the human body.
How big is the impact of nuclear sewage on human body?
How serious will the consequences be if Japan insists on pushing the sea exclusion plan? What changes will happen to the human body after encountering nuclear radiation? If you don’t directly encounter nuclear radiation, just eat food contaminated by nuclear radiation, how big is the impact on the human body?
"These nuclides are very likely to be absorbed by the human body through various channels." Wei Fangxin, a researcher at the Nuclear and Radiation Safety Center of the Ministry of Ecology and Environment, said.
one
Three ways for nuclides to enter the body
1. Dietary intake, fish enriched with nuclides are likely to be eaten by humans.
2. Breathing intake, nuclides entering the sea may enter the air through transpiration.
3. If the content of nucleolin in a specific sea area is extremely high, the human body may be directly irradiated into the body when it comes into contact with the sea area.
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The harm may appear in several years.
How much harm will these nuclides bring when they enter the human body?
Seiji Goto, a Japanese engineering and technical expert, said: After radioactive substances enter the human body, there are various destruction paths. For example, cesium will affect the thyroid gland, strontium will invade the bones, and even a small amount will cause great damage to local organs, and the risk of local cancer will increase. The radiation risk of radioactive materials is completely ignored, which is a big problem.
Yu Wen, a researcher at the School of National Security and Emergency Management of Beijing Normal University, said: "The effects of radionuclides on health will accumulate over time, and it may take years or even decades to show up. How much impact the Fukushima nuclear polluted water will have on the sea is related to the total amount of emissions, nuclide types and individual factors. "
How do we deal with it?
After entering the marine environment, the nuclear polluted water will first be transported by ocean currents and spread to different oceans. Yu Wen said that according to the previous monitoring of the Fukushima nuclear accident, most pollutants will spread eastward and then cross the entire Pacific Ocean. A small part of pollutants will also enter the southwest through the spread of membrane water in the western Pacific, and it will take about one and a half to two years to enter China’s waters. The macro simulation results in Tsinghua University show that the nuclear waste water will reach the coastal waters of China within 240 days after discharge.
On August 24th, Japan started the discharge of nuclear polluted water from Fukushima into the sea. The General Administration of Market Supervision attaches great importance to food safety and price supervision. On the basis of investigating and rectifying the potential safety risks of imported food in the early stage, we will deploy local market supervision departments to further strengthen food safety supervision, urge food producers and operators to strictly abide by food safety laws and regulations and relevant provisions on imported food, prohibit food producers and operators from purchasing and using aquatic products (including edible aquatic animals, the same below) originating in Japan to process food, make meals or sell them (including online sales), strengthen food safety sampling and monitoring of imported aquatic products sold in the market, and investigate and deal with relevant illegal acts in strict accordance with the law.
At the same time, the General Administration of Market Supervision deployed all localities to strengthen salt price monitoring, strengthen analysis and early warning, establish a "through train" mechanism with relevant Internet platforms, and keep abreast of abnormal price fluctuation information and illegal behavior clues. Intensify the enforcement of price supervision, strictly investigate the illegal acts of hoarding, fabricating and spreading price increase information, and publish typical cases in time.
In addition, China Salt Industry Group Co., Ltd. issued a statement on the 24th in response to the phenomenon of salt snapping up in some markets. China National Salt Group said that China implements fixed-point production management of salt, and the sources of salt in China are mainly divided into three categories: well salt, lake salt and sea salt. At present, the proportion of salt products in China is 87% of well salt, 10% of sea salt and 3% of lake salt. The production of well salt and lake salt is not affected by nuclear pollution in Japan.
Inner Mongolia Autonomous Region is located in an inland province, and the salt market in the region is mostly well-mine salt and lake salt. At present, the sea salt products listed and stocked in the region are of high quality and safety.
In response to the salt rush in some regional markets, e-commerce and some supermarkets have short-term shortages. Zhongyan Group said that it is accelerating production and distribution and going all out to ensure market supply. At present, the supply of salt reserves is sufficient, so please consume rationally from all walks of life and don’t snap up blindly.
On the 25th, Mengyan Group issued a statement on ensuring the supply of salt market: Mengyan Group will continue to shoulder the social responsibility of state-owned enterprises, take effective measures to effectively ensure the supply and price stability of salt market in our region, and invite all sectors of society to consume rationally.
Ejinaoer Salt Company, which belongs to Mengyan Salt Group, is a national AAA-level designated salt production enterprise. It has Ejinaoer Lake salt production area located 25 square kilometers deep in Dongwuqi grassland of Xilin Gol League. The salt production capacity of the main mother lake brand "Daqing Salt" and "Grassland Lake Salt" reaches 150,000 tons/year, which is stable and far from pollution. It can not only meet the salt demand in the region, but also supply the salt to the market outside the region. In order to enrich the salt products, there are inland wells and mines.
Original title: "Nuclear sewage has been discharged into the sea, what is in the water? How big is the impact on the human body? How do we deal with it? 》
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