If the concentration of regeneration liquid is too high, it will cause pressure on the later water washing, especially the negative resin alkaline washing will waste a lot of pure water.

Open the mixed-bed regeneration pump inlet door, start the regeneration pump, and then open the mixed-bed regeneration pump outlet door, mixed-bed backwash drain door and exhaust air door, backwash water inlet door. To be emptied out of the door after the water flow, close the air door. The beginning of the backwash flow rate should be small, to be loosened after the resin, gradually increase the flow rate, until all the bed can be loosened, the flow rate of roughly 10m / h. Yin resin expansion rate of 70% or more, the expansion rate of Yang resin is about 30% or more, so that after 10-15 minutes can be made to make the Yin and Yang resin stratification.