1. When the ion exchange resin is in long-term storage or needs to be stored in the out of service equipment for a long time, the strong resin should be changed into salt type, the weak resin should be changed into corresponding hydrogen type or free amine type, and can also be changed into salt type, so as to maintain the stability of resin performance. Then soak in clean water. If it is necessary to drain the water from the stopped equipment, it should be sealed to prevent the loss of resin water.
2. The ion exchange resin contains a certain amount of equilibrium water, which should be kept moist during storage and transportation to prevent dehydration. The resin should be stored indoors or covered, and the ambient temperature should be 5 ~ 40 ℃. Bagged resin should avoid direct sunlight, away from boilers, heaters and other heating devices to avoid dehydration.
If it is found that the resin has been dehydrated, do not put it directly in water, so as to avoid rapid swelling and breaking of dry resin in water. According to the degree of dehydration, slowly add about 10% salt water into the resin, and gradually dilute with clean water after soaking for several hours.
3. When the ambient temperature is 0 ℃ or below, in order to prevent the resin from cracking due to internal water freezing, insulation measures should be taken, or the resin should be stored in different concentrations of salt water according to the temperature conditions to prevent freezing. If it is found that the resin has been frozen, it should be allowed to thaw slowly and naturally. Mechanical force should not be applied to the resin.
The relationship between the concentration of salt solution and freezing point is as follows:

4. For the resin placed in the exchanger after long-term shutdown, in order to prevent the irreversible pollution of microorganism (such as algae, bacteria, etc.) to the resin, the resin must be thoroughly backwashed before shutdown to remove the suspended matter accumulated during operation, and pay attention to regular flushing and water change.