| 摘要 |
An apparatus for disinfecting fluids comprises a thin flow channel 12 which extends between a pair of parallel discs 16,18. The fluid to be treated flows radially of the discs 16,18 through the flow channel 12 where it is irradiated axially of the discs by ultra-violet light emitted by one or more lamps 14. At least one of the discs 16,18 is rotated to cause relative movement therebetween. The relative rotation of the discs 16,18 creates a turbulent flow of fluid within the flow channel 12 to ensure that the fluid circulates and swirls close to the opposed surfaces of the discs, thereby ensuring that all parts of the fluid are exposed to an intense dose of ultra-violet radiation. The thin planar flow channel 12 enables a relatively large volume of fluid to be efficiently disinfected since the ultra-violet radiation can pass axially of the discs 16,18 through the thin fluid layer over the large surface area of the discs 16,18 without suffering from significant UV absorption.
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