Disinfecting water by ultra violet light and ozone converted from oxygen by ultra violet light in twin chamber concentric tubular assembly

摘要

In a process to disinfect drinking water by exposure to ultra violet (UV) radiation within an aquatic system (1), the water is exposed to UV within a given range of wavelength (S1-S2) emitted from an artificial source. The water flows around the UV source in the vicinity of which oxygen is simultaneously released and converted to ozone by the UV radiation. An Independent claim is also included for an upright disinfecting assembly in which a supply of oxygen is released with water into an annular compartment (3) surrounding the UV source (2). The oxygenated water (W) passes into a second radial outer compartment (4) where it subjected to UV treatment and then brought into contact with the resulting ozone. Water may be repeatedly treated by the same process before release for use. The water that has been treated with a combination of UV radiation and ozone is fed to a user-point. A suitable assembly incorporates an upright UV-ozone reactor (10) with a low-pressure mercury straight tube UV-emitter (2). The emitter is located within a cylindrical container (6) with an air/oxygen supply (8) and an ozone outlet (9) to the second cylinder. The first cylinder is surrounded by a second concentric container (7) with a water inlet (11) and outlet (12).