Ion Exchange Resins for Softening Systems

Chengda provides different types of ion exchange resins for water treatment softening system.

The ion exchange resin is the important part in the softening system to absorb Calcium and magnesium ions in the water. Softening system is the basic and critical system in the water treatment, which can make water satisfy drinking and industrial production requirements.

Resin storage and transportation

1.When the ion exchange resin is stored for a long time or needs to be stored in the disabled equipment for a long time, the strong resin (strong acidic and strong basic resin) should be changed into salt type, and the weak resin (weak acidic and weak basic resin) can be changed into corresponding hydrogen type, free amine type, or salt type to maintain the stability of resin performance. Then soak in pure water. If it is necessary to drain the water from the deactivated equipment, it shall be sealed to prevent the loss of water in the resin.
2.lon exchange resin contains a certain amount of balanced moisture, which should be kept wet during storage and transportation to prevent dehydration of the resin. The resin shall be stored indoors or in a covered place, and the ambient temperature is preferably between 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 the resin directly into water, so as to prevent the dry resin from swelling sharply and breaking when encountering water, According to the degree of dehydration of the resin, add about 10% salt water slowly to the resin, and gradually dilute it with clean water after soaking for several hours.
3.When the ambient temperature is <0 ℃, in order to prevent the resin from cracking due to internal moisture freezing, insulation measuresshould be taken, or according to the temperature conditions, the resin should be stored in the corresponding concentration of salt water to prevent freezing and cracking. If it is found that the resin has been frozen, it should be allowed to slowly and naturally thaw, and mechanical force should not be applied to the resin.
4. For the resin placed in the exchanger due to long-term shutdown, in order to prevent irreversible pollution of the resin by microorganisms (such as algae, bacteria, etc.), the resin must be thoroughly reverse cleaned before shutdown to remove suspended substances accumulated during operation, and pay attention to regular flushing and water change, or take the following measures after thorough backwashing:Anion resin: use 10%NaCl+2%NaOH mixed solution with 3 times the resin volume to pass through the resin layer twice, soak for several hours at rest each time, and then drain the solution.If necessary, rinse the resin layer with0.2%H202 (hydrogen peroxide) solution twice the resin volume before restart. Cation resin: 0.5% formaldehyde solution can be filled into cation exchanger and pipe system, and maintain this concentration during shutdown.It can also be soaked in salt water. Wash with0.2%H202 (hydrogen peroxide) or 0.5% formaldehyde solution before restarting the equipment.