Is there any harm of nuclear waste water?You have to know what is nuclear waste water first

Is there any harm of nuclear waste water?

This problem itself cannot be called a problem, because since it is a nuclear waste water, of course, it is harmful, because the nuclear waste water refers to the water containing a certain radioactive element. If the radioactive elements in the nuclear waste water have been completely removed, then It is not a nuclear waste water, it is ordinary water, so as long as it can be called nuclear waste water, it must be harmful. The problem is how big the harm is. Therefore, if someone says that the nuclear waste water preparing for the sea is completely harmless, it is a joke. Since it is clearly said that it is nuclear waste water, it is necessary to analyze how big this thing is.

Fukushima nuclear waste water contains a variety of different radioactive elements, but according to earlier Tokyo Electric Power Company, they can remove all radioactive elements except the radioactive elements except the pupae of Fukushima nuclear waste water through new purification technology.

We do not do unsatisfactory doubts, and analyze the harm of Fukushima nuclear waste water based on this statement.位, as the isotope of hydrogen, is a radioactive element with a half -life of 12.3 years. We know that the shorter the half -life of a radioactive element, the larger the radiation generated during the unit time, and the 12.3 years is already short, so the radioactivity of the cricket is still very strong. However, don't worry, the half -life is not the only factor that measures the harmfulness of a radioactive element, and it is also a key, that is, what kind of ray this radioactive element produces.

The decay of radioactive elements may release three different types of rays, namely α -rays, β -rays and γ -rays.

Among them, α -rays and β -rays are almost harmless to the human body, because their penetration is poor and cannot penetrate the skin of the human body. Aluminum plates cannot stop it. Fortunately, what is released is β -ray, so it is almost harmless to the human body. But don't be happy too early. Harmicism is that a small amount of radioactive elements are almost harmless when placed in front of us, but if it enters our body, the situation will be different. The nuclear wastewater containing the ninemark is excluded into the sea, and it will continue to accumulate in marine life through biomass enrichment.

What is the effect of biological enrichment?

In the image, for example, a shrimp consumed a cricket, a small fish ate 10 shrimp, and it had 10 crickets at once, and a large fish ate 10 small fish, and there were 100 crickets. A blue flag tuna ate 100 big fish, and it had 10,000 crickets, and then it was made into a sashimi and put on our table. The β -rays released by cannot penetrate the skin of the human body, so it is harmless when the body is in vitro, but once it enters our body, it will be combined with the body fluid into an organic binding. The ionization effect will begin to hurt us. The most important thing is that these organic combinations are difficult to discharge. The time is long, and the harm is self -evident. It can be seen that because the content of nuclear waste water is very low, it is said that it is not harmful. It is a short -sighted and self -deceiving behavior.

Maybe you will have such a question: Nuclear waste water is not unique to Fukushima. Isn't the normal operation nuclear power plant also generated nuclear waste water? How do they deal with them?

The water in the nuclear power plant can be divided into three different circuits. The water in the circuit is directly contacted with the core, which helps the core to cool down and take away the heat into water vapor. The water vapor of the circuit one does not directly participate in the power generation, but passes the heat to the water in the loop Erli by non -contact method. It also helps to re -condense water steam through non -contact ways to re -condense water steam. It can be seen that the only radioactive water is the water of the circuit, and the water discharged outward is the water from the three miles. These are not nuclear waste water.

In this way, does the normal operation nuclear power plant produce nuclear waste water?

Not, it will still produce some, because the above is the ideal state. In reality, there will always be some normal or non -normal leaks in the water in the circuit. At this time, a small amount of nuclear waste water will be generated. These How to deal with nuclear waste water? These nuclear waste water will be decomposed into water and radioactive solid waste through a series of methods, that is, to filter out the radioactive elements in nuclear waste water into solids, and then properly handle it through landfills. Display the sea directly. Is there no radioactive element at all? In fact, there is still a little bit, but very little. However, this kind of processing method must not be used, because they have too many nuclear waste water, and they are constantly generating, and in the end, they can only let the sea carry everything. But is it really the sea in the end?

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Source: Science Belief

Reprinted: Science Popularization China

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