Is the impact of nuclear sewage on Hunan big or small?

From the perspective of geography and environmental science, Hunan is located in the inland area of south-central China, and does not directly face the sea. The impact of nuclear sewage discharged into the ocean is theoretically smaller than that of coastal provinces, and it may have a certain impact mainly through indirect ways such as food chain and atmospheric circulation. However, the specific impact degree needs to be comprehensively analyzed according to the actual situation, diffusion range, concentration and degradation of pollutants.