Patent ID: 7083717

Claim:
A water purification apparatus for connection to a water re-circulation system associated with a body of water to be treated with chemicals that are supplied in the form of dissolvable tablets, the water purification apparatus comprising: a. a hopper comprising: i. a perforated bed for supporting the tablets in the hopper; and ii. a spray nozzle located adjacent the perforated bed and connected via an inlet port to the water re-circulation system for receiving water from the water re-circulation system and for discharging the water into the tablets supported on the perforated bed; b. a basin below the perforated bed for receiving water from the perforated bed and including: i. a rinse nozzle connected to the inlet port for receiving water from the water re-circulation system and for discharging the water into the basin; ii. a float valve for controlling the level of water in the basin by controlling the flow of water from the inlet port through the rinse valve into the basin; and iii. a discharge device for discharging water from the basin through an outlet port connected to the water system; and c. a controller adapted for connecting the flow of water to the spray nozzle, for connecting the flow of water to the rinse nozzle, and for controlling the operation of the discharge device so that the discharge device discharges water faster than water is supplied to the perforated bed by the spray nozzle.