System for regeneration of anionic exchangers, which are loaded by removing uranium from drinking water with uranium species and natural organic matters, comprises an alkaline solution, an acid solution, and reaction containers or -columns

摘要

The system for regeneration of anionic exchangers, which are loaded by removing uranium from drinking water with uranium species and natural organic matters, comprises an alkaline solution for first treatment of the anionic exchangers and for removal of the natural organic matters, an acid solution for subsequent treatment of the anionic exchangers and for removal of the uranium species, and several reaction containers or reaction columns. The acid concentration in acid solution is more than 0.05 mol/L. The quantity of the alkaline and acid solutions is 0.5-20 bed volumes per level. The system for regeneration of anionic exchangers, which are loaded by removing uranium from drinking water with uranium species and natural organic matters, comprises an alkaline solution for first treatment of the anionic exchangers and for removal of the natural organic matters, an acid solution for subsequent treatment of the anionic exchangers and for removal of the uranium species, and several reaction containers or reaction columns. The acid concentration in acid solution is more than 0.05 mol/L. The quantity of the alkaline and acid solutions is 0.5-20 bed volumes per level. The flow quantity of the alkaline and acid solutions is 0.25-5 bed volumes per hour (BV/h). Independent claims are included for: (1) a method for regeneration of anionic exchangers, which are loaded by removing uranium from drinking water with uranium species and natural organic matters; and (2) an arrangement for regeneration of anionic exchangers, which are loaded by removing uranium from drinking water with uranium species and natural organic matters.