METHOD FOR PREPARING AN ULTRAPURE HYDROGEN PEROXIDE SOLUTION BY ION EXCHANGE WITH RECIRCULATION

摘要

The invention concerns a method for preparing an ultrapure hydrogen peroxide solution characterised in that it comprises at least one sequence which involves successively passing the solution to be purified on at least a bed of ion-exchanging adsorbents (AEA) and at least a bed of cation-exchanging adsorbents (AEC) and in that the non-null proportion of the solution coming from a bed is recirculated either upstream of said bed, or upstream of one of the preceding beds, or upstream of the first bed of the passage sequence. The invention also concerns an installation for implementing the method.