ACID SOLUTION RECOVERY DEVICE FROM REGENERATION WASTE LIQUID OF ACID ION EXCHANGER AND RECOVERY METHOD USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a device capable of effectively recovering acid solution from a regeneration waste liquid exhausted when a cation exchanger is subjected to regeneration treatment.;SOLUTION: Provided is an acid solution recovery device comprising: a regeneration waste liquid storage tank 1 for an acid ion exchanger; an electrodialyzer 6; and an acid solution tank 7. The regeneration waste liquid storage tank 1 is communicated with a deionization chamber 61 of the electrodialyzer 6 via a first liquid feed tube 5 provided with a liquid feed pump 2 and a protective filter 3 on the way, and a regeneration waste liquid circulation mechanism A for an acid ion exchanger is composed by the regeneration waste liquid storage tank 1, the liquid feed pump 2, the protective filter 3 and the first liquid feed tube 5. On the other hand, the acid solution tank 7 is communicated with a concentration chamber 62 of the electrodialyzer 6 by a second liquid feed tube 10 provided with a liquid feed pump 8, and, an acid solution recovery mechanism B is composed by the acid solution tank 7, the liquid feed pump 8 and the second liquid feed tube 10.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2018,JPO&INPIT