Patent ID: 8066940
Filing Date: 2011-11-29
Classification: C02F

Abstract:
1. Apparatus for converting As (III) to As (V) in water to be purified, said apparatus comprising in combination: a) a tank for receiving water to be purified through an inlet conduit and for discharging purified water through an outlet conduit, said tank including a lower water section under pressure and an upper air space under pressure commensurate in pressure with that present in the lower water section; b) a pump for conveying water from the lower water section into the upper air section; c) a nozzle for discharging the water from said pump into the upper air section to entrain air in the discharged water; d) a tube extending from the upper air section into the lower water section for directing the air entrained water from said nozzle into the lower water section and for causing turbulent flow of water in the lower water section; e) a UV lamp disposed in the upper air section for converting oxygen molecules in the air to ozone molecules for conveyance with the air into entrainment with the water discharged from said nozzle; and f) said UV lamp irradiating the water to provide a virucidal and germicidal effect on any micro organisms present in the water and for producing hydroxyl radicals in the water upon irradiation of the ozone molecules in the water, which, in combination result in conversion of As (III) that may be present to As (V).