Fukushima is located on the east coast of Japan, at the end of the Japanese warm current, which is a strong ocean current from south to north. Therefore, the discharge of Fukushima nuclear polluted water will only go north and west along the Japanese warm current, reaching Canada and the United States first. Nuclear polluted water will circle the North Pacific Ocean along the ocean current, then reach the vicinity of Taiwan Province Province in China, and spread to the whole Pacific Ocean in about 10. 10 years later, no sea area was spared.
Fortunately, due to the special topographical and hydrological conditions along the coast of China, the impact on the coast of China may be the smallest among the Pacific Rim countries. There are three specific reasons. First, the first island chain is the first barrier that naturally blocks the nuclear polluted water body. Secondly, due to the existence of two steps, especially the steep rise of the steps near Chinese mainland, and the barrier of the island of Taiwan Province Province in China, it is difficult for ocean currents to cross this step on a large scale, so the Japanese warm current forms and flows to the east coast of Japan.
Difference between nuclear waste water and nuclear waste water
Definition and source of nuclear waste water and nuclear waste water: Nuclear waste water refers to water polluted by nuclear fuel, such as high-level radioactive waste water produced in a nuclear accident, or cooling water in direct contact with nuclear fuel. Nuclear wastewater refers to the water containing radioactive isotopes discharged from nuclear power plants, such as low-level radioactive wastewater used for cleaning, dust removal, seawater desalination and other purposes, or wastewater that still contains trace radioactive substances after treatment.
Main components and radioactive intensity of waste water and nuclear sewage: Nuclear sewage contains many radioactive elements, such as uranium, plutonium, cesium, strontium, iodine and cobalt. Some of them have a long half-life, for example, the half-life of uranium 238 is 4.5 billion years, and that of plutonium 239 is 24,000 years. Nuclear wastewater mainly contains tritium, a radioactive isotope of hydrogen, and its half-life is 12.3 years. Although tritium has low radioactivity, it can combine with oxygen to form tritium oxide, so it can enter the living body or the environment.