| 摘要 |
A radioactive wastewater treating method comprises the steps of: firstly performing a reverse osmosis treatment on the radioactive wastewater, then transporting the radioactive wastewater into a continuous electric desalination unit for treating, and further removing the radionuclide for making the discharged wastewater to meet the discharge requirements; respectively filling different mixed ion exchange resins into a fresh water chamber and a concentrated water chamber in a continuous electric desalination membrane stack of the continuous electric desalination unit, wherein the components of the mixed ion exchange resins filled in the fresh water chamber comprise 30%-60 vol.% strong-acid cation exchange resin, 40%-60 vol.% strong-base anion exchange resin, and 0%-30 vol.% weak-base anion exchange resin; the components of the mixed ion exchange resins filled in the concentrated water chamber comprise 20%-50 vol.% strong-acid cation exchange resin, and the rest is a strong-base anion exchange resin. The method uses a weak dissociation polymer portion to improve the selectivity of the continuous electric desalination membrane stack to the trace radionuclide, can effectively remove the radionuclide with an extremely low concentration, and ensures that the final discharged water meets the discharge requirements. |
