Ion exchange resin, any of a wide variety of organic compounds synthetically polymerized and containing positively or negatively charged sites that can attract an ion of opposite charge from a surrounding solution. The resins commonly consist of a styrene-divinylbenzene copolymer (high molecular weight substance), although other compositions, such as methacrylic acid–divinylbenzene and phenol-formaldehyde polymers, are also employed. The electrically charged groups are commonly sulfonic or carboxylic acid salts or quaternary ammonium salts. Polymers containing acid groups are classified as acid, or cation, exchangers because they exchange positively charged ions, such as hydrogen ions and metal ions; those containing ammonium groups are considered basic, or anion, exchangers because they exchange negatively charged ions, usually hydroxide ions or halide ions.
Chloride and hydroxide ions are the most commonly used materials on the anion exchange water treatment resin beads. As water passes through the device, the resin adsorbs anions such as sulfate, nitrate, arsenic and bicarbonates and releases chloride into the water.
When all chloride has been exchanged, the resin beads are said to be exhausted. They are regenerated with brine. The brine solution releases the adsorbed contaminants and replaces them with chloride. The released anions are washed out with the waste brine.
TA213D is used in multi bed demineralization to prevent resins from organic fouling.
Any needs about anion exchange water treatment resin, welcome to find us! Lanlang team is ready to offer the best service to you.