Softened cation exchange resin [001]The hardness ions in water are replaced by the built-in resin tank of the water softener when water passes through. It is commonly referred to as ion exchange softening method.

Softening cation exchange resin [001 7]When soft water resin replaces a certain amount of hardness ions such as calcium and magnesium in water, it will not be able to soften water again. At this time, a soft water machine is needed to regenerate the resin, that is, the reduction regeneration method after resin calcium pollution.

1. After acid intake, weak cation exchanger must be immediately cleaned by JF9201 filtered water replacement, and strong cation exchanger must be immediately cleaned by purified water replacement.

2. Calcium pollution is more likely to occur in winter due to the low temperature of regeneration solution. Therefore, before regeneration, the weak cation exchanger must be scrubbed and backwashed, and the regeneration waste liquid pipeline between the weak cation exchanger and the strong cation exchanger must be backflushed, so as to prevent problems before they occur.

3. When strong cation exchange resin is regenerated with Na solution, it is advisable to adopt stepwise regeneration method. Regeneration begins with a low Na concentration solution because the concentration of Ca2 + desorbed from the resin is high but the Na concentration is low and even small amounts of Ca2 +Na precipitate formed are washed away by the solution. Then gradually increase the Na concentration, at this time, the Ca2+ concentration desorbed from the resin is low, and Na precipitation will not be formed.

4, because weak cation exchange resin is regenerated with strong cation exchange resin regeneration waste liquid. Therefore, diluted water (filtered water JF9201) must be fed into weak cation exchanger while acid is fed, and the water feed amount should not exceed the acid inlet of exchanger. In addition, pay attention to observe the color of regenerated waste liquid discharged from weak cation exchanger, such as white turbidity, even if the acid concentration is adjusted.

Shenzhen Qingyuan Environmental Protection Technology Co., Ltd.is a large-scale, comprehensive, national global, water treatment industry and environmental protection equipment industry company, but also engaged in water treatment equipment and product design, experiment, research and development, production and sales of high-tech enterprises. Shenzhen Qingyuan Environmental Protection Technology Co., Ltd. is engaged in various water treatment related products, including filter elements, filter shells, membrane shells, hollow fiber ultrafiltration membranes, imported reverse osmosis membranes/RO membranes, water treatment accessories, water treatment special instruments, water treatment equipment, water treatment filter media, water purifiers, pure water machines, etc.