work (sometimes called water production, the same below), backwashing, salt absorption (regeneration), slow flushing (replacement), fast flushing five processes. All processes of different softened water equipment are very similar, but due to the actual process or the need for control, there may be some additional processes. Any water softening equipment based on sodium ion exchange is developed on the basis of these five processes (among which, fully automatic water softening equipment will increase the brine reinjection process).
After working for a period of time, the equipment will intercept a lot of dirt brought by the raw water on the top of the resin. After removing these dirt, the ion exchange resin can be completely exposed and the regeneration effect can be guaranteed. The backwashing process is that water washes in from the bottom of the resin and flows out from the top, so that the dirt intercepted by the top can be washed away. This process generally takes about 5-15 minutes.
In the process of injecting salt water into the resin tank, the traditional equipment uses a salt pump to inject the salt water, and the fully automatic equipment uses a dedicated built-in ejector to suck in the salt water (as long as the inlet water has a certain pressure). In the actual working process, the regeneration effect of salt water flowing through the resin at a slower speed is better than that of simply soaking the resin with salt water. Therefore, the softened water equipment is regenerated by the method of slowly flowing salt water through the resin. This process generally requires 30 About minutes, the actual time is affected by the amount of salt used.
After the salt water is used to flow through the resin, the process of slowly washing all the salt in the resin with raw water at the same flow rate is called slow washing, because there are still a large number of calcium and magnesium ions on the functional groups by sodium ions during this washing process. Exchange, according to actual experience, this process is the main process of regeneration, so many people call this process replacement. This process is generally the same as the salt absorption time, which is about 30 minutes.
In order to thoroughly rinse the remaining salt, the resin should be rinsed with raw water at a flow rate close to that of the actual work. The final effluent of this process should be soft water that meets the standard. Under normal circumstances, the fast flushing process is 5-15 minutes.