What are the dangers of nuclear wastewater? What are the hazards of nuclear wastewater

Nuclear wastewaterThe hazards include pollution of global waters, irreversible damage to genes, etcFood chainof the transmission of pollution.

1. Pollution of global waters. Japan's Pacific coast will bear the brunt of the discharge, especially in the waters around Fukushima Prefecture, and the sewage will also pollute the East China Sea. Some Japanese scholars have pointed out that the discharge of nuclear sewage into the ocean will affect global fish migration, distant-water fisheries, human health, ecological security, and other aspects.

Therefore, it is not only a domestic issue, but also an international issue related to the global marine ecology and environmental security.

2. Irreversible damage to genes. Greenpeace nuclear experts point out that Japan's nuclear wastewater contains 14 carbon

It is dangerous for thousands of years and can cause genetic damage. Science Magazine.

It has also been previously written that in addition to tritium, which is now known, nuclear wastewater also contains a variety of radioactive materials, and it is necessary to pay close attention to the potential dangers that may be brought by the release of sewage into the ocean.

3. The contamination of the food chain has been proved by experiments that if a large amount of radioactive contaminated seafood is eaten for a long time, it may cause the accumulation of radioactive substances in the body to exceed the allowable amount, causing chronic radiation sickness and other diseases, hematopoietic organs, endocrine system, nervous system and other damage.

01 The so-called nuclear wastewater is actually that these wastewater contains a large number of radioactive elements, once contaminated with these radioactive pollutants, it will directly enter the interior of animals and plants, causing mutations in gene sequences, inducing serious diseases, such as cancer, etc. At the same time, it also has a great impact on the next generation, and the most intuitive impact is the serious deformities and hereditary diseases of the new generation.

According to relevant data, nuclear wastewater contains 63 kinds of radioactive materials, once contaminated with these radioactive pollutants, it will directly enter the interior of animals and plants, causing mutations in genetic sequences and inducing serious diseases, such as cancer. At the same time, it also has a great impact on the next generation, and the most intuitive impact is the serious deformities and hereditary diseases of the new generation.

Although the concentration of these nuclear wastewater will be greatly reduced after human intervention, such as atmosphere, these substances cannot be removed at all. As for how long it will take for these nuclear contaminants to completely dissolve, there is no way to give some accurate data here, but it can be said that it will be a fairly long process, thousands or even tens of thousands of years. Because the half-life of these isotopes is very long, the shortest is 30 years, for example, the half-life of cobalt reaches 10,000 years, here we need to know that the half-life refers to the time taken by the number of radioactive substances to decay to half, so it does not mean that cobalt disappears after 10,000 years, but only halved, so it takes countless half-lives so that the radioactive elements can reach the safe range.

If it is released in the sea area of the North Equatorial Warm Current, it will affect the surrounding waters of our country more quickly, but it will also affect itself again in the shortest time. If he were to be released closer to the North Pacific Current, the nuclear wastewater would reach North America and the United States faster, and the concentration of pollutants at this time would be much higher than in the above way. Therefore, if Japan does dump nuclear wastewater into the Pacific Ocean, it will have a certain impact on the entire Pacific Rim countries.

Nuclear wastewaterThe harm is to damage the environment, affect the hygiene of food, and affect people's health.

Radioactive contamination caused by the production of nuclear wastewater and even ** due to various reasons. It has a large range of hazards, extremely serious damage to the surrounding organisms, a long duration, and complex after-treatment dangers.

After the leak, nearby residents were evacuated, crops were buried, and trees within 7 kilometers of the surrounding area gradually died. For up to half a century, farming and grazing will not be possible within 10 kilometres. Within 10 years, the production of milk is prohibited within 100 kilometers, the fishing of fish is banned, and so on.

The harm of nuclear wastewater to the ocean

The ocean is known as the best channel, the treasure house of resources, the hometown of clouds and rain, and the cradle of life. However, she is being severely polluted, mainly by floating debris and organic compounds and the red tides they cause.

Kuroshio. Marine pollution.

It directly leads to the deterioration of the marine environment and the reduction of biological species.

With the development of social economy and the continuous growth of population, more and more wastes are generated in the process of production and life. The vast majority of this waste ends up in the ocean, either directly or indirectly. When the discharge of these wastes and sewage reaches a certain level, the ocean is polluted.

Nuclear wastewater pollutes global waters, can cause irreversible damage to genes, and contaminates the food chain.

Some Japanese scholars have pointed out that the discharge of nuclear sewage into the ocean will affect the migration of global fish, distant-water fisheries, human health, ecological safety and well-being, and other aspects. Greenpeace nuclear experts have pointed out that the carbon-14 contained in Japan's nuclear wastewater has been dangerous for thousands of years and can cause genetic damage. The American journal "Science" has also previously written that in addition to the currently known tritium, nuclear sewage also contains a variety of radioactive materials, and it is necessary to pay close attention to the potential dangers that may be brought by the release of sewage into the ocean.

Contamination of the food chain has been experimentally proven that long-term consumption of radioactive contaminated seafood may cause the accumulation of radioactive substances in the body beyond the allowable amount, causing various diseases.

A precipitant is added to the nuclear wastewater, and the co-precipitation reaction between the chemical components in the precipitant and the radioactive elements is used to reduce the content of radioactive elements in the nuclear wastewater. At present, the commonly used industrial precipitants mainly include aluminum-iron precipitants, lime soda precipitants and phosphate precipitants.

Ion exchangers are used to exchange ions with nuclear wastewater, so as to remove radioactive ion exchange in nuclear wastewater. Most of the radioactive ions contained in nuclear wastewater are cations, so the positively charged active groups in the ion exchanger can be exchanged with the radioactive cations, and the radioactive ions can be exchanged into the exchanger.

Nuclear wastewater is definitely harmful, and Japan's nuclear water is now hoarded and has nowhere to discharge.

China treats nuclear wastewater.

Solution: 1. If the amount is not large, as long as the emission is controlled, tritium and water can be directly evaporated.

2. Landfill the remaining solid waste, but tritium may pollute the air.

3. Through adsorption, the solid waste is sucked out of the sensitive cavity first, and after sucking it out, the solid waste is still taken to landfill, and then the remaining wastewater is directly discharged into the sea, or stored in the tank for a while.

4. The purpose of wastewater treatment is to separate the pollutants in the wastewater in a certain way, or decompose them into harmless and stable substances, so that the sewage can be purified.

5. Generally, it is necessary to prevent the infection of poisons and germs; Avoid visible objects with foul smell and bad sensation to meet the requirements of different uses.

6. Wastewater treatment is quite complex, and the selection of treatment methods must be considered according to the quality and quantity of wastewater, and the use of the receiving water body or water discharged to it.

At the same time, it is also necessary to consider the treatment and utilization of sludge and residue generated in the wastewater treatment process, as well as the possible secondary pollution problems, as well as flocculants.

of ** utilization, etc.

Pollution from industrial wastewater:

Organic aerobic substance pollution, chemical poison pollution, inorganic solid suspended solids pollution, heavy metal pollution, acid pollution, alkali pollution, plant nutrient pollution, heat pollution, pathogen wax pollution, etc.

Many pollutants have color, odor or foam, so industrial wastewater often presents an offensive appearance, causing large-scale pollution of water bodies and directly threatening the people.

Therefore, it is particularly important to control industrial wastewater.

The above content refers to Encyclopedia - Industrial Wastewater.

1. Nuclear wastewater contains a large number of radioactive elements, tritium is the highest, followed by carbon 14, cobalt 60 and strontium 90, these three elements have a longer degradation time, and they are easy to enter the sediment of the ocean to be absorbed by marine organisms, these isotopes are potentially toxic to humans, and can affect the marine environment in a more long-term and complex way. For example, the physiological concentration of carbon-14 in fish may be 50,000 times that of tritium. Cobalt-60 can be enriched in seafloor sediments, and concentrations may increase by a factor of 300,000.

In addition to the potential for radioactive materials to cause serious pollution to the marine environment, radioactive materials may also spread throughout the Pacific Ocean and even the global marine environment due to ocean currents.

2. At the same time, Greenpeace International has also reported that nuclear sewage contains the radioactive isotopes tritium and carbon-14, of which carbon-14 is "the main contributor to the collective radiation dose of human beings, which has the potential to damage human DNA." Shaun Burnie, a senior nuclear expert at Greenpeace, said there could be up to gigabecquerels of carbon 14 in total in the storage tank. "These and other radionuclides in the effluent will be dangerous for thousands of years and have the potential to cause genetic damage.

That's why this plan (discharge into the sea) had to be abandoned. ”