1. In the operation and use, the sub-electric control automatic type and the manual clock control type are both based on the principle of ion exchange, replacing the calcium and magnesium ions in the source water, and the water flowing out is the removal of calcium and magnesium ions. , softened water with extremely low hardness. When the ionic resin absorbs a certain amount of calcium and magnesium ions, it is necessary to regenerate the resin layer with saturated brine, re-displace the calcium and magnesium ions on the resin, restore the exchange capacity of the resin, and discharge the waste water. The state-of-the-art automatic control system automates the entire process of softening, backwashing, salt absorption, slow washing, quick washing, and salt water injection. 2. The operation mode of the water softener and the recycling process of the resin regenerative electric control automatic and manual clock-controlled water softener are composed of the following steps: a. Operation: the source water flows through a pressure-containing resin under a certain pressure and flow rate. The exchangeable Na+ contained in the resin (softener) resin is ion-exchanged with cations (Ga2+, Mg2+, Fe2+, etc.) in the water, so that the Ca2+ and Mg2+ ions in the effluent of the container are extremely low, which meets the requirements of the user. b. Backwashing: The resin fails after adsorbing a certain amount of calcium and magnesium ions, and then backwashed with water from bottom to top before regenerating. The purpose of backwashing is two. First, the backwash is pressed to make the operation compact. The resin layer is loose, which is beneficial to the resin particles to fully contact with the backwashing liquid. Secondly, the suspended solids accumulated in the surface layer of the resin during operation and some of the broken resin particles are also removed along with the backwashing water flow, so that the water flow resistance of the exchanger is not more The bigger it is. In order to backwash, the resin of the intact particles is not washed away. When designing the water softener, a certain backwashing space is left on the resin layer, and the backwashing intensity is larger as the backwashing intensity is larger. The quality of backwash directly affects the regeneration effect. c. Salt absorption regeneration: the regeneration liquid (sodium chloride solution) flows through the failed resin layer at a certain concentration flow rate, and the calcium and magnesium ions on the resin are replaced, and the resin is reduced and regenerated to restore the original exchange capacity. d. Slow-washing replacement: After the regeneration liquid is finished, the resin layer of the expansion space of the exchanger has salt liquid and resin which have not been involved in the regeneration exchange, and flows in the same direction with a small flow of clean water and salt liquid, so that the salt liquid and the resin Adequate contact to completely regenerate the resin and make full use of the salt solution. e. Quick wash (washing): The purpose is to remove the residual waste liquid and the replaced calcium and magnesium ions remaining in the resin layer, usually at a normal running flow rate until the water is qualified. f. Salt tank hydration: water is injected into the salt tank to dissolve and regenerate the required salt consumption. The concentration of saturated brine is
37% in order to ensure that the salt solution concentration in the salt tank can reach saturation, firstly, the dissolution time should be no less than 6 hours. Secondly, the salt level in the salt tank must be kept above the water level.
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