WATER SOFTENING DEVICE

摘要

PROBLEM TO BE SOLVED: To enable the continuous supply of the water to be treated over 24 h or more and also to save salt water by detecting the hardness of the supply water to be softened with the lapse of time and controlling regeneration timing based on the detected value. SOLUTION: A plurality of water softening devices provided with an inlet water hardness measuring means 9 for measuring the hardness of supply water to a water softener 1 and a treated water quantity measuring means 10 for measuring the flow rate of treated water after passing through the water softener 1 are arranged in parallel and the water softening devices are connected so that the water passing actuation and the regenerating actuation of these each water softening device are switchable.