First, it will have an impact on marine life.
Because nuclear sewage contains harmful substances, after these substances are discharged into the sea, organisms living in the sea will come into contact with these harmful substances, and at the same time, they will be affected by radioactive elements in nuclear sewage, which will cause a huge blow to the marine ecological environment.
Secondly, it will have an impact on global water resources.
Because the global water system is the same to some extent, when the nuclear sewage is discharged into the sea, it will spread to the whole Pacific Ocean under the action of ocean currents and monsoon, and will be exchanged with other oceans through the Pacific Ocean, thus affecting all oceans. Moreover, the water vapor generated by water evaporation will bring some harmful substances in nuclear sewage to the sky, and then fall back to the ground in the form of rainfall, which may pollute the global water resources.
Treatment methods of nuclear wastewater:
1, physical method
Physical methods include radioactive sedimentation, centrifugation, distillation, dialysis, reverse osmosis, etc. Radioactive sedimentation is the most commonly used method, that is, the wastewater containing radionuclides is precipitated at a certain time and speed to remove actinides and radium and other heavy nuclides.
2. Chemical methods
Chemical methods mainly include colloid filtration on polymers, coordination precipitation, ion exchange and other mature technologies. Among them, the coordination precipitation method is to coordinate radioactive ions with chemical reagents to form insoluble complexes, so as to precipitate and remove radioactive substances from wastewater.
3. Biological methods
Biological method is to remove radioactive pollutants from nuclear wastewater by biosorption, biofilm method and microbial treatment of living organisms. Biological adsorption method is to remove radioactive substances from nuclear wastewater by using the adsorption characteristics of some microorganisms, while biofilm method is to form a biofilm with adsorption and degradation functions to remove wastewater pollutants after microorganisms grow on the carrier.