Water treatment
APPLICATION OF SODIUM CHLORIDE
The function of sodium chloride to soften water
Harmful ions in water are mainly calcium and magnesium ions. The general way to remove calcium and magnesium is to let the water pass through a water softener equipped with cation exchange resin to replace the Ca2+ and Mg2+ in the water. With the increase of Ca2+ and Mg2+ in the resin, the resin The effectiveness of removing Ca2+ and Mg2+ gradually decreases. After the resin absorbs a certain amount of calcium and magnesium ions, it must be regenerated. The regeneration process is to wash the resin layer with salt water to replace the calcium and magnesium ions on the resin, and the resin restores its function.
The principle of softened water
Softening water is to remove magnesium ions and calcium ions in the water, and the method we use is generally to replace these two ions in the water with a resin, so that sodium ions enter the water, so that the water that passes through the resin, magnesium ions and calcium ions Most of the ions are removed to achieve the purpose of softening water.
However, as the amount of softened water increases, the magnesium and calcium ions absorbed by the resin increase, which reduces the ability of the resin and the ability to soften the water. At this time, we need to regenerate the resin.
Powder salt is a product made by processing coarse particles of high-purity sodium chloride into fine sodium chloride powder by mechanical grinding or anti-solvent methods. It is widely used in medicine, daily chemicals, food and catering, metal fire extinguishing, printing and dyeing, and water treatment. , Chemical filling and other fields.
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