April 25, 1986, the former Soviet Union, the Chernobyl nuclear power plant nuclear leakage accident, the explosion of the leakage of nuclear fuel concentration of up to 60%, and until the accident occurred after 10 days and nights after the reactor was sealed, the radioactive elements have been released in excess. The neighborhood was hastily evacuated only three days after the accident, but those three days had already left many people contaminated with radioactive material. Two people died instantly in this accident, and by 1992, more than 700O people had died from nuclear contamination from this accident. The radioactive contamination caused by the accident spread over 150,000 square kilometers of the former Soviet Union, where 694.5 million people live.
As a result of the accident, a 30-kilometer area around the plant was designated as a quarantine zone, nearby residents were evacuated, crops were buried, and trees within 7 kilometers of the plant gradually died. In the future, for up to half a century, farming and grazing will not be allowed within 10 kilometers; within 100 kilometers within 10 years, the production of milk was banned after the accident at the Chernobyl nuclear power plant. Not only that, due to the spread of radioactive soot, the whole of Europe was also shrouded in the shadowy shock of nuclear contamination. The neighboring countries detected an extraordinary amount of radioactive fallout, which resulted in huge losses in the production of food, vegetables, and dairy products. The mental and psychological disturbances and fears caused by nuclear contamination are even more incalculable.
In the seven years following the accident, 7,000 cleanup workers died, one-third of them by suicide. Forty percent of those who participated in the medical rescue suffered from mental illness or permanent memory loss. To this day, of the 834,000 people who participated in the rescue effort, 55,000 have died, 70,000 have been disabled and more than 300,000 have died from radiation damage.
The ocean is known as "the front line of national defense, the channel of trade, the treasure trove of resources, the home of clouds and rain, the cradle of life. However, she is being seriously polluted, the common main floating pollution and organic compound pollution and its cause of red tide, black tide. Marine pollution directly leads to the deterioration of the marine environment, the reduction of biological species.
With the social and economic development, the population continues to grow, in the production and living process of the waste generated is also more and more . The vast majority of these wastes end up directly or indirectly into the sea. When the emission of these wastes and sewage reaches a certain limit, the ocean is polluted. Such as marine oil pollution, marine heavy metal pollution, marine thermal pollution, marine radioactive pollution and so on. Polluted sea area, will cause damage to marine life, endanger human health, hinder human marine production activities, damage to the quality of seawater use, resulting in the destruction of the beautiful environment and so on.