Will Japanese nuclear waste water enter China?

Japanese nuclear waste water may flow to China.

Under normal circumstances, these nuclear waste waters can easily spread to the waters of China. However, due to China's long coastline and many islands, these islands are connected together to prevent these nuclear waste waters.

Coupled with the estuaries of the Yangtze River, the Yellow River and the Pearl River in China, a large amount of water flows into the ocean every year, which will create great pressure and prevent nuclear wastewater from entering the inland rivers of China. In the short to long term, nuclear waste water will have a complex and far-reaching impact on the coastal areas of China from Fukushima to the ocean.

According to the simulation of ocean circulation, after nuclear waste water enters the sea from Fukushima, Japan, there are at least three ways to affect the China Sea: one is advection diffusion, which spreads southwest along the coast of Japan, enters the China Sea and enters the China Sea for a relatively short time; Second, it can enter the Sea of China in a few years through recirculation circulation.

The third way is the Pacific surface circulation system, including Kuroshio extension, North Pacific current, California circulation, North equatorial current and Kuroshio, which enters the Sea of China through the bashi channel and the East China Sea slope. Relatively speaking, it takes longer to enter the Sea of China in this way.

Main differences between sewage and wastewater:

1. Source: Sewage mainly comes from urban life, including wastewater and excreta produced by families, enterprises, hospitals and schools, as well as rainwater and groundwater. Wastewater mainly comes from mining and industrial production activities, as well as agricultural wastewater.

2. Treatment: Sewage usually needs biodegradation, disinfection and chemical treatment to reach the discharge standard, which has relatively little impact on the environment. However, harmful substances such as chemicals and heavy metals in wastewater will have a more serious impact on the environment, and the treatment process may be more complicated, such as advanced oxidation or physical separation.

3. Pollutants: Sewage contains a lot of organic matter, inorganic salts and microorganisms, while wastewater may contain a lot of harmful substances such as chemicals and heavy metals.