Resin is a porous, insoluble exchange material. The resin filter in the water softener contains millions of tiny plastic balls (beads), all of which contain a lot of negative charge exchange positions that absorb positive ions. When the resin is in its new state, these charge-exchanging positions are occupied by positively charged sodium ions. When calcium and magnesium pass through the resin tank, they come in contact with resin beads and replace sodium ions in exchange. Resin preferred to combine cation with strong charge, calcium and magnesium ion charge than sodium ion. Instead of the sodium cation, the water softener flows down through the resin "bed," so the softener sends out "soft" water. Finally, all the resin exchange sites are occupied by calcium and magnesium, which can no longer work.
　　This article is organized by dongguan oneness filtration technology co., LTD