KR830000541A - Solution treatment method - Google Patents

Abstract

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Description

Solution treatment method

This content is subject to disclosure, so the full text is not included.

The drawings show one embodiment of the present invention,

Fig. 1 is a diagram explaining the progress of the reverse method.

Figure 2 is a diagram illustrating the progress of the improved reverse method.

Figure 3 is a diagram illustrating the progress of another improved reverse method.

Claims (4)

When the solution to be treated is brought into contact with the anion exchange resin to decolorize, demineralize, desiligate, etc., when regenerating the anion exchange resin, an acid solution, an acid solution containing an alkali metal salt, an alkali solution containing an alkali metal salt, an alkali metal A solution treatment method, characterized in that, after preliminary regeneration through which one or two or more treatment liquids selected from the group consisting of salt solutions are passed through, the main regeneration through which an alkali liquid is passed is performed. Acid solution, alkali metal salt-containing acid solution for regeneration of anion exchange resin when the solution to be treated is subjected to decolorization, desalting, desilicic acid, etc. by first contacting the solution to be treated with the anion exchange resin and then contacting the cation exchange resin. A solution treatment method, characterized in that, after preliminary regeneration by passing one or two or more treatment solutions selected from the group consisting of an alkali metal salt-containing alkali solution and an alkali metal salt solution, the main regeneration is performed by passing the alkali solution. When the solution to be treated is first brought into contact with an anion exchange resin, followed by contact with a cation exchange resin to decolorize, demineralize, desilicic acid, etc. Alkali after preliminary regeneration by passing one or two or more treatment solutions selected from the group consisting of acid solutions, alkali metal salt-containing acid solutions, alkali metal salt-containing alkali solutions, and alkali metal salt solutions in regenerating anion exchange resin. A solution treatment method characterized by performing main regeneration through which the liquid is passed. When the solution to be treated is first brought into contact with an anion exchange resin, followed by contact with a cation exchange resin to decolorize, demineralize, desiligate, etc. In reducing and regenerating the anion exchange resin, an acid solution containing an alkali metal salt, which is a recycle waste solution of the cation exchange resin, is used as part or all of the treatment solution, and if desired, in addition to the acid solution containing the alkali metal salt, another new alkali metal salt containing acid solution, acid solution, A solution treatment method, characterized in that, after preliminary regeneration in which one or two or more treatment liquids selected from an alkali metal salt-containing alkali liquid and an alkali metal salt liquid are passed through, the main regeneration is performed by passing the alkali liquid. ※ Note: It is disclosed according to the contents of the initial application.