Patent ID: 6228273
Filing Date: 2001-05-08
Classification: B01F,C02F

Abstract:
Apparatus for controlling the dissolution rate of solid chemical material, comprisinga fresh water tank,a fluid holding tank having a fluid inlet fluidly connected to said fresh water tank and a fluid outlet line and an interior space for holding fluid, said fluid holding tank arranged and designed such that fresh water enters from said fresh water tank via said fluid inlet and treated water exits via said outlet line,a perforated chemical material feeder disposed in said tank, said feeder designed and arranged to hold said chemical material in an essentially vertical orientation, with said fluid in said tank entering and exiting perforations of said feeder to wet and dissolve at least a portion of said solid chemical material in said feeder,an ultrasonic generator having a probe coupled with said tank which applies ultrasonic waves to the interior of said tank for producing a cavitation intensity of said liquid in said tank and in said feeder, whereby said cavitation erodes said chemical material for dissolving in said liquid, andmeans for varying a characteristic of said ultrasonic waves in order to vary the rate of dissolution of said chemical material in said liquid.