Water softening device

A water softening device comprising:

• a water softening tank that softens raw water containing a hardness component with a weakly acidic cation exchange resin;
• a neutralization tank that neutralizes soft water passing through the water softening tank with a weakly basic anion exchange resin;
• an electrolytic tank that generates acidic electrolytic water for regenerating the weakly acidic cation exchange resin and alkaline electrolytic water for regenerating the weakly basic anion exchange resin;
• wherein the electrolytic tank includes:
• a first discharge port through which the acidic electrolytic water is discharged from the electrolytic tank to the water softening tank,
• a first water intake port through which the soft water passing through the water softening tank is taken in the electrolytic tank,
• a second discharge port through which the alkaline electrolytic water is discharged from the electrolytic tank to the neutralization tank, and
• a second water intake port through which neutralized water passing through the neutralization tank is taken in the electrolytic tank;
• and wherein the water softening device further comprises:
• an acidic electrolytic water circulation flow path that circulates the acidic electrolytic water through the electrolytic tank, the first discharge port, the water softening tank, and the first water intake port in the stated order;
• and
• an alkaline electrolytic water circulation flow path that circulates the alkaline electrolytic water through the electrolytic tank, the second discharge port, the neutralization tank, and the second water intake port in the stated order.