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(1) Ion exchange resins contain a certain amount of moisture, which should be maintained during storage and transportation. If ion exchange resins become dehydrated during storage, they should be immersed in a 10% salt solution before use to allow them to slowly and fully expand, and then gradually diluted with clean water. Do not immerse dehydrated resins directly in water, as this may cause them to expand rapidly and break.
(2) When ion exchange resins are not in use, they should be stored in the following ion forms: cation exchange resins are in the sodium (Na) form; anion exchange resins are in the chloride (Cl) form; and weak base anion exchange resins are in the free amine form.
(3) During storage, ion exchange resins should be protected from rust, oil, strong oxidants, and organic matter to prevent oxidative degradation, poisoning, and other accidents. (4) During storage and transportation, ion exchange resins should be kept at a temperature of 5-40℃ to avoid freezing and cracking or accelerated microbial growth, which would affect product quality and reduce product performance.
(5) In winter, if there is no insulation device, the resin can be stored in saline solution. The concentration of the saline solution can be determined according to the air temperature to prevent freezing.
During liquid flow or desorption, in order to maintain data stability, it is best to avoid stopping the operation midway. For other auxiliary operations such as backwashing, regeneration, and rinsing, the operation can be stopped at any time, but care must be taken to close the pipeline gate valves to prevent the liquid from running dry and to avoid the resin being exposed to the liquid surface. Otherwise, not only will air bubbles be introduced into the resin layer, affecting subsequent work, but the resin will also oxidize and deteriorate.
