Why does Japan discharge nuclear waste water?

The reasons for the discharge of nuclear waste water in Japan are: storage capacity limitation, relative safety of marine discharge, economic considerations, etc.

1, storage capacity limit

The Fukushima nuclear accident caused a lot of sewage, which accumulated for many years and led to the storage space approaching the limit. In the face of increasing nuclear waste water, the Japanese government believes that by discharging nuclear waste water, limited storage space can be freed to prevent nuclear waste water from overflowing.

2. Relative safety of marine emissions

The Japanese government advocates the safety of marine discharge, emphasizing that the concentration of radioactive substances in the treated nuclear wastewater will be reduced to meet international standards. They insist that such emissions will not pose a serious threat to the marine ecosystem.

3. Economic factors

The treatment and storage of nuclear waste water is an expensive task. The Japanese government said that by discharging nuclear wastewater, the economic burden of wastewater treatment and storage can be reduced, so that limited resources can be invested in other urgently needed fields, such as the clean-up and reconstruction of nuclear accidents.

Recommended methods for treating nuclear wastewater

1, if the amount is small, tritium and water can be directly evaporated as long as the discharge is controlled.

2. Bury the remaining solid waste in situ, but tritium may pollute the air.

3. The solid waste is sucked out by adsorption. After being sucked dry, the solid waste is still taken to landfill, and then the remaining wastewater is directly discharged into the sea or stored in a jar for a period of time.

4. The purpose of wastewater treatment is to separate the pollutants in wastewater in some way, or decompose them into harmless and stable substances, so as to purify the sewage.

5. Generally, it is necessary to prevent the spread of poisons and germs and avoid visible objects with peculiar smell and ill feelings to meet the requirements of different uses.

Refer to the above content: Baidu Encyclopedia-Nuclear Wastewater