Water softening device

A water softening device comprising:

• a water softening tank that softens raw water including a hardness component with a weakly acidic cation exchange resin to produce soft water;
• a neutralization tank that neutralizes a pH of the soft water generated by the water softening tank with a weakly basic anion exchange resin;
• an electrolytic tank that generates acidic electrolyzed water for regenerating the weakly acidic cation exchange resin in the water softening tank and alkaline electrolyzed water for regenerating the weakly basic anion exchange resin in the neutralization tank;
• a water pump that supplies the alkaline electrolyzed water from the electrolytic tank to the neutralization tank;
• a current value detector that detects a current value of the water pump;
• and
• a controller that controls a regeneration treatment of performing, based on the current value detected by the current value detector, at least one of (i) regeneration of the weakly acidic cation exchange resin using the acidic electrolyzed water and (ii) regeneration of the weakly basic anion exchange resin using the alkaline electrolyzed water,
• wherein the controller, in the regeneration treatment,
• continues the regeneration treatment when the current value of the water pump detected by the current value detector is more than or equal to a predetermined value, and
• stops the regeneration treatment and shifts to a hardness component discharge treatment of discharging the hardness component in the water softening device to an outside of the water softening device when the current value of the water pump detected by the current value detector is less than the predetermined value.