In the production of ion exchange resins, a small amount of organic oligomers and some inorganic impurities are often contained. In the initial stage of use, it will gradually dissolve and release, affecting the quality of the effluent or the quality of the product. Therefore, the new resin must be pretreated before use, as follows:
1. After the ion exchange resin is loaded into the system, backwash the resin layer with clean water at an expansion rate of 50% to 70% until the water is clear, odorless, and free of finely divided resin.
2. Pass the resin layer at a flow rate of 2 m/h with about 2 times the resin volume of 4 to 5 % HCl solution. After all the inlets, soak for 4-8 hours, drain the acid solution, rinse with clean water until the effluent is neutral, and the flushing flow rate is 10 ~ 20 m / h.
3. Using a solution of about 2 times the volume of the resin in 2 to 5 % NaOH, pass in and soak as above the HCl solution. Drain the alkali liquor, rinse with clean water until the effluent is neutral, and the flushing flow rate is the same as above.
If the acid or alkali solution can be repeated 2 to 3 times, the effect is better.
For the pre-treated resin, the amount of regenerant should be appropriately increased during the first operation to ensure sufficient regeneration of the resin.
Sunresin has established its Remote Solution Operation and Monitoring Center (RESOM) recently, in an effort not only to offset the impact of the travel restrictions due to the pandemic, but also to develop this innovative initiative to a higher and permanent level in a sustainable manner.
The Seplite LSF983 is very suitable for hardness (calcium and magnesium) removal from potable water(household water filters, pitchers etc), beverage and food applications. Besides hardness, it can also help to reduce certain level of heavy metals as Copper, Lead etc.
The 20th World Pharmaceutical Raw Materials China Exhibition, CPhI China 2020, will take place from December 16th to 18th, 2020, at Shanghai New International Expo Center (SNIEC). Sunresin Invites You to Visit the 20th World Shanghai CPhI Exhibition.