Patent ID: 6627070
Filing Date: 2003-09-30
Classification: C02F,Y10S

Abstract:
A filter for oxidizing and removing impurities from water, the filter comprising:a tank having an upper end and a lower end, an opening at the upper end, and a cavity for receiving a filter resin; an air injector coupled to the opening of the tank, the air injector having an air source inlet for coupling to a regulated air source, an air source outlet in communication with the air source inlet, the air source outlet opening into the upper end of the tank to produce a head of air in said tank; a vent, the vent having a vent inlet and a vent outlet in communication with the vent inlet, the vent inlet opening into the upper end of the tank; an unfiltered water inlet for coupling to a source of unfiltered water, the unfiltered water inlet in fluid communication with the upper end of the tank for introducing unfiltered water into the head of air, to aerate unfiltered water entering the tank; a stand pipe having an upper pipe end and a lower pipe end, the stand pipe located in the tank with the lower pipe end extending into the lower end of the tank arranged to receive filtered water that has passed through said filter resin; and a filtered water outlet in fluid communication with the upper end of the stand pipe, whereby air and unfiltered water are introduced into the upper end of the tank and the water is aerated in the tank.