Ion exchange unit, module and apparatus

CN120309055BActive Publication Date: 2026-06-19GENERAL CUTTING-EDGE MATERIAL TECHNOLOGY (XIAMEN) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GENERAL CUTTING-EDGE MATERIAL TECHNOLOGY (XIAMEN) CO LTD
Filing Date
2025-04-09
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Potassium ion exchange resins exhibit a rapid decline in potassium ion release capacity during water treatment, resulting in a limited lifespan and frequent resin replacements. This increases water treatment costs and restricts their widespread application.

Method used

A layered arrangement of highly selective alkali metal ion exchange resin and low selective alkali metal ion exchange resin is used to control the sequence and rate of potassium ion release. Separation units prevent resin mixing and extend resin life.

Benefits of technology

It extends the service life of potassium ion exchange resin, reduces the frequency of resin replacement, reduces water treatment costs, and improves the stability and efficiency of potassium ion release.

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Abstract

This invention relates to the field of ion exchange technology, and particularly to an ion exchange unit, module, and device. The ion exchange unit comprises a highly selective alkali metal ion exchange resin and a low-selectivity alkali metal ion exchange resin. It allows impurity ions to sequentially pass through the highly selective alkali metal ion exchange resin and the low-selectivity alkali metal ion exchange resin along the water flow direction, so that the effluent contains highly selective alkali metal ions and low-selectivity alkali metal ions capable of exchanging with the impurity ions, and some of the highly selective alkali metal ions are replaced and retained in the low-selectivity alkali metal ion exchange resin. The ion exchange unit provided by this invention effectively controls the release of highly selective alkali metal ions through the layered arrangement of the highly selective alkali metal ion exchange resin and the low-selectivity alkali metal ion exchange resin, thus significantly extending its lifespan.
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