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发明公开
CN106057265A 一种从萃取镧的废水中除放射性的方法 有权 转让

一种从萃取镧的废水中除放射性的方法
摘要：
一种从萃取镧的废水中除放射性的方法，所述萃取镧的废水为南方离子型稀土矿中萃取镧后的萃余液，其中钙离子浓度为500~5000mg/L，总α浓度为30~70000Bq/L、总β浓度30~8000Bq/L，pH为2~5，其特征是步骤如下：将碳酸钠添加到萃取镧的废水中，调整pH为7~10，搅拌1~4小时后，静置，吸出清液后过滤，沉淀即为放射性废渣，清液为除放射性后的废水。本发明的从萃取镧的废水中除放射性的方法能将放射性物质从废水中除去，除去彻底，工艺简单。
摘要（英）：

The invention relates to a method for removing radioactive substances from lanthanum extracting waste water. The lanthanum extracting waste water is raffinate after lanthanum extraction from southern ion type rare earth ore, wherein the concentration of calcium ions is 500-5000mg/L, the concentration of total alpha is 30-70000Bq/L, the concentration of total beta is 30-8000Bq/L, and the pH is 2-5. The method is characterized by comprising the steps of adding sodium carbonate to the lanthanum extracting waste water, adjusting the pH to be 7-10, performing stirring for 1-4 hours, performing standing, drawing out clear liquid which is waste water after removal of radioactive substances, and performing filtration so as to obtain precipitation which is radioactive waste residues. Through the adoption of the method for removing radioactive substances from lanthanum extracting waste water disclosed by the invention, the radioactive substances can be removed from the waste water thoroughly, and the technology is simple.

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