The working principle of water softening equipment

Since the hardness of water is mainly formed and represented by calcium and magnesium, cation exchange resins are generally used(Water softener)Take the waterCa2+,Mg2+The main components that form scale are displaced and carried out within the resinCa2+,Mg2+The increase, resin removalCa2+,Mg2+Its efficiency gradually decreases. When the resin has absorbed a certain amount of calcium and magnesium ions, it undergoes regeneration. The regeneration process involves flushing the resin layer with brine from the salt tank to displace the hardness ions on the resin and discharge them out of the tank with the regeneration waste liquid. Thus, the resin regains its softening exchange function. The hardness of water is mainly formed and represented by calcium and magnesium. The principle of sodium ion exchange softening treatment is to pass the raw water through sodium-type cation exchange resin to reduce the hardness components in the waterCa2+,Mg2+In the resinNa+Exchange with each other, thereby adsorbing substances in waterCa2+,Mg2+Soften the water. As followsRNaRepresenting sodium-type resin, its exchange process is as follows:   2RNa+Ca2+ = R2Ca + 2Na+  2RNa + Mg2+ = R2Mg + 2Na+  That is, after water passes through the sodium ion exchanger, in the waterCa+,Mg+Be replacedNa+.  The general operation process of a control valve is as follows: operation, backwashing, salt suction, slow washing, salt tank water replenishment, and forward washing. Iii. Working Process and Requirements of Water Softening Equipment 1The working process of water softening equipment   Work(Sometimes it is called water production, the same below)Backwashing, salt absorption(Regeneration)Slow rinse(Replacement)Five processes of quick rinse. All the processes of different water softening equipment are very similar Recently, due to differences in actual processes or control requirements, there may be some additional procedures. Any water softening equipment based on sodium ion exchange is developed on the basis of these five processes(Among them, the fully automatic water softening equipment will add a brine recharging process).  Backwashing: After the equipment has been in operation for a period of time, a lot of impurities brought by the raw water will be intercepted on the upper part of the resin. Only after removing these impurities can the ion exchange resin be exposed and the regeneration effect be guaranteed. The backwashing process involves water being washed in from the bottom of the resin and flowing out from the top, which can wash away the dirt trapped at the top. This process usually requires5-15About a minute.