Patent ID: 7419589

Claim:
A water purification system connected 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 system comprising: a basin connected to said water re-circulation system, and including an inlet port, and at least one rinse nozzle for receiving water from said recirculation system, and an outlet port for returning treated water to said recirculation system, and an overflow port for dispensing of water above a predetermined level in said basin; a hopper overlying the basin and removable therefrom by lifting, said hopper including an internal chamber for containing the tablets in the hopper; and a perforated bed that forms the bottom of the internal chamber and supports dissolvable tablets in the hopper, the perforated bed including a water coupling fixed to the perforated bed and connected via said inlet port to the water re-circulation system for receiving water from the water re-circulation system; and a plurality of spray heads, each of which is detachably connectable to the coupling of the perforated bed for discharging the water into the tablets supported on the perforated bed, wherein each of said spray heads includes spray nozzles that are different in one or more of size, number and angle, the size, number and angle of spray nozzles being selected to dissolve tablets having different chemical compositions.