Now Japan will discharge 6.5438+0.3 million tons of nuclear sewage into the sea, which will have a serious impact on the ecological environment of coastal countries such as China, Russia, the Philippines, South Korea and the United States, and even the whole world. This is simply spreading nuclear pollution to the whole world.
1. What impact will this sewage containing a lot of radioactive substances have once it enters the sea?
The first is water pollution.
This kind of nuclear polluted water is different from the nuclear waste water generated by nuclear power plants at ordinary times, because the core melts and releases a lot of nuclear radiation substances, and this kind of water will naturally contain nuclear radiation leakage exceeding the standard 100 times.
Basically, a cup of nuclear contaminated water is a chemical element. Including tritium, carbon 14, cobalt 60 and strontium 90 ... are all "killers" who can change human or other biological DNA.
After discharged into the ocean, nuclear wastewater will spread to different sea areas through major ocean currents, resulting in the pollution of water sources in these sea areas by radioactive substances.
Water is an important resource of life. Once contaminated by radioactive substances, it will be extremely difficult to restore to a pure state through technical treatment. In addition, these marine water bodies may also enter the atmospheric circulation through solar evaporation and other processes, resulting in direct pollution of fresh water resources.
After the nuclear wastewater is discharged into the sea, its propagation speed, influence range and environmental risk will be out of control.
Once nuclear sewage is discharged into the sea, it will inevitably affect the marine ecosystem.
According to the analysis of American Science magazine, although these nuclear wastes have been treated, they still contain a variety of radioactive substances. If these substances enter the sea, it will take a long time to degrade, especially tritium and strontium, which will be absorbed by marine organisms. The discharge of these substances is likely to cause damage or even death to marine life and interfere with the balance of marine ecological chain.
What is even more frightening is that these radioactive substances are also destructive to human DNA. And these radioactive substances are extremely dangerous for thousands of years.
In addition, the discharge of nuclear waste water may pose a potential threat to human health, and the risk of human intake of pollutants through eating seafood will also increase.
Although the Japanese government promised to strictly control and monitor radionuclides when discharging nuclear waste water, according to media reports, the nuclear polluted water containing more than 1000 kinds of nuclear radiation substances is still highly toxic after the harmless treatment of Japanese fake models and samples.
For example, this unfiltered tritium is mentioned in the article "Research Progress of Tritium Radiation Hazards" by Li Wei, the Nuclear and Radiation Safety Center of the Ministry of Environmental Protection. "There is some indirect evidence that cases of childhood leukemia and congenital malformation are increasing among people exposed to tritium or other types of radiation."
And radioactive substances such as carbon 14, cobalt 60 and strontium 90, which are more deadly than tritium and cannot be filtered.
In fact, the impact of nuclear leakage on marine ecology has long been confirmed by facts. According to Japanese media reports, it is not difficult to find that Tokyo Electric Power Company conducted an investigation in Yuliu Town, where the Fukushima Daiichi nuclear power plant is located. The results of sampling inspection in February 2065438+2008 found that every 1 kg of red snapper contained 358 Bekkerel of cesium, which greatly exceeded Japanese national standards. If you eat 200 grams of this fish, it is equivalent to 1/50 radiation of chest X-ray, which is about 1 millisievert.
If anyone still thinks that it is unscientific to talk about toxicity without dose, then remind me that nuclear sewage in Japan is expected to continue to be discharged for 20 to 30 years. So this dose, over the years, is enough.
What impact will this incident in Japan have on us?
Let's just say that polluted seafood, such as sea fish, shrimp, kelp and sea salt, can't be eaten. This is also a great blow to marine resources and fisheries.
Second, direct discharge of nuclear sewage is certainly not the only option.
As early as 20 13, Japan's own domestic experts came up with at least five methods, namely, formation injection, sea discharge, steam release, hydrogen release and underground burial.
Japanese experts once said: "You can dig concrete pits underground, and then carry out mortar maintenance on the nuclear polluted water, because concrete can isolate nuclear radiation." Mortar placed in concrete pits will harden over time and will no longer have fluidity. But it must not be put into the ocean. After the mortar is solidified, the radioactivity will decay after hundreds or thousands of years, which is almost harmless. This is a very good idea. "
However, after evaluation, the Japanese government believes that it is feasible to release and discharge steam into the ocean, and the other three schemes are labeled as "poor economy, immature technology and time is not allowed" and will not be discussed.
Specifically, it is estimated that it will take 654.38+700-3.4 billion yen, or about 654.38+200-2.03 billion RMB, to discharge nuclear polluted water into the ocean. Using the above fifth method of burying underground, the cost is almost dozens or even hundreds of times that of the sea-discharging method.
To put it bluntly, Japan chose the disposal method with the lowest cost but the biggest environmental pollution.
Even Japan has developed the nuclear polluted water purification treatment system (ALPS), claiming that the water purified by this system has been treated harmlessly and reached the drinkable level, so it is no problem to discharge it into the sea.
It is true that experts from Pacific island countries suggested that Japan use nuclear sewage to dry concrete infrastructure, but the Japanese government ran out to oppose it.
Japan said that nuclear sewage may lead to the evaporation of radioactive tritium, which is harmful to human health. Japan suddenly claimed that nuclear sewage was harmful to health, and it also tore open the mask that Japan had washed white for nuclear pollution for many years.
Oh, great! Russia once proposed to bomb the Fukushima nuclear power plant with hydrogen bombs to avoid endless troubles.
However, after being bombed by atomic bombs twice, Japan always thought that being bombed by nuclear bombs was a shame and rejected this proposal.