Twin tank water treatment method

摘要

Embodiments of the invention provide a twin tank water treatment system and method. The water treatment system includes first tank with a first set of sensors and a first resin bed, a second tank with a second set of sensors and a second resin bed, and a valve assembly with a flow meter and a controller in communication with the first set of sensors, the second set of sensors, and the flow meter. The method includes determining when the resin beds are exhausted based on input from the flow meter, the sensors, and a water hardness setting.

主权项

1. A method for determining when a resin bed of a water treatment system is exhausted, the method comprising:
measuring a volume of fluid that has flowed through the resin bed; retrieving an initial water hardness setting; retrieving a resin bed capacity; measuring a hardness front location along the resin bed using at least one sensor; calculating a new water hardness setting using the hardness front location, the measured volume of fluid that has flowed through the resin bed, and a placement of the at least one sensor; estimating a remaining fluid volume capacity using the new water hardness setting, the resin bed capacity, and the measured volume of fluid that has flowed through the resin bed; and determining that the resin bed is exhausted when the remaining fluid volume capacity has flowed through the resin bed.