Patent ID: 6881331

Claim:
A water purification system comprising: an integral, compact enclosure containing a plurality of vertically oriented, serially coupled compartments configured to direct a flow of water alternately in upward and downward directions, with a first of said compartments having a water inlet and a last of said compartments having a water outlet, each said compartment extending the full vertical dimension of said enclosure; an ozone generator in one of said compartments comprising an ultraviolet lamp positioned in a watertight housing, with walls of said watertight housing transparent to ultraviolet radiation from said ultraviolet lamp, an air entrance in said watertight housing and an ozone/air outlet in said watertight housing; a supply of at least one substance that reacts beneficially with ozone; and a venturi coupled to said water inlet and comprising an annular chamber surrounding said flow of water, said annular chamber communicating with said flow of water via a flow passage, a plurality of spaced-apart inlet ports communicating with said annular chamber, a first of said inlet ports connected to said ozone/air outlet, a second of said inlet ports coupled to said supply of at least one substance, said venturi configured such that said ozone and said beneficial substance are mixed in said annular chamber prior to being introduced into said flow of water.