WATER SOFTENING SYSTEM (VERSIONS) AND METHOD FOR CONTROLLING SOFTENING SYSTEMS Russian patent published in 2015 - IPC C02F5/00 

FIELD: chemistry.

SUBSTANCE: invention relates to arrangement and method for controlling multiple sized water softening tanks. A water softening system including a first treatment tank (24), filled with an ion exchange resin (32) and having a first water capacity, a second treatment tank (26) in parallel with the first treatment tank, filled with an ion exchange resin (32) and having a second water capacity that is less than the first water capacity, a flow meter connected to the first and second treatment tanks, the flow meter is connected to the piping leading to the first and second treatment tanks and measures the number of gallons per unit time that flow through the water softening system and a controller (70) in communication with the above flow meter, the controller configured to direct the water into the first treatment tank when the demand flow rate is greater than a designated flow rate, and to direct the water into the second treatment tank when the demand flow rate is equal to or less than the designated flow rate.

EFFECT: no untreated water passing through the system.

13 cl, 3 dwg