Patent ID: 6781137
Filing Date: 2004-08-24
Classification: C02F

Abstract:
A fluid treatment apparatus, comprising:a duct portion including an elongate tubular duct having a central longitudinal axis; an inlet port and an outlet port with both said inlet port and said outlet port being at, or adjacent to, opposite ends of said duct portion; a separate vane portion mounted internally of said duct portion, said separate vane portion having a helical guide vane extending longitudinally of said duct portion between said inlet port and said outlet port and defining a flow path extending longitudinally and helically around said central longitudinal axis of said elongate tubular duct between said inlet port and outlet port; and, a plurality of elongate light sources mounted parallel to one another at respective spatially separated points arranged radially outwardly of said central longitudinal axis of said elongate tubular duct and extending longitudinally of said elongate tubular duct between said inlet port and said outlet port through adjacent turns of said flow path extending longitudinally and helically around said central longitudinal axis of said elongate tubular duct.