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Potable Water Treatment

The ion exchange filtration is one of the most common water filtration methods. Ion exchange process percolates water through bead-like spherical resin materials (ion-exchange resins). Ions in the water are exchanged for other ions fixed to the beads. The two most common ion-exchange methods are softening and deionization.
Ion exchange is a water treatment process commonly used for water softening or demineralization, but it also is used to remove other substances from the water in processes such as dealkalization, deionization, and disinfection.

These resins may be packaged in separate bed exchangers with separate units for the cation and anion exchange beds. Or, they may be packed in mixed bed exchangers containing a mixture of both types of resins. In either case, the resin must be "regenerated" once it has exchanged all its hydrogen and/or hydroxyl ions for charged contaminants in the water. This regeneration reverses the purification process, replacing the contaminants bound to the DI resins with hydrogen and hydroxyl ions.
Recently ion exchange resins have been increasingly used to create drinking water. Specialized resins have been designed to treat
various contaminants of concern, including perchlorate and uranium. There are many resins designed for these purposes, such as 
 
strong base/strong anion resin, which is used to remove nitrates and perchlorate. There are also resin beads that can be used for water softening.

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Latest News

20 2023-03
Sunresin’s uniform particle size resin plays a big role in the production of Bisphenol A

Since 2017, Sunresin has carried out research and development on BPA resins. From understanding the production process of bisphenol A to benchmarking against similar competition products, after thousands of experiments and demonstrations, the resins were be tested for the first time in 2022.

15 2023-03
Sunresin Provides Customized Services and One-stop Separation and Purification Solutions for the Production of Allulose

During the processing from the corn raw materials to the final allulose product, Sunresin provides a complete purification process including: ion exchange deashing, activated carbon decolorization, chromatographic separation, etc., to achieve high-quality crystalline allulose. Currently, the two core process units in allulose production are the differential isomerization of fructose and the purification process.

11 2023-03
Dr. Gao Yuejing of Sunresin listed on "2023 Forbes China 100 Power Businesswoman "

On March 7, Forbes China released the list of "2023 China’s 100 Power Businesswomen". Dr. Gao Yuejing, chairwoman of Sunresin, was selected on the list, demonstrating the outstanding contributions of the "she power" in the development of Sunresin.

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