Abstract: The invention provides a water treatment apparatus and method of use. The apparatus comprises an inlet configured to be connected to a source of liquid to be treated, and at least one liquid treatment vessel arranged to expose liquid in the vessel to ultraviolet radiation in an advanced oxidation process reaction. A source of ultraviolet radiation comprises a longitudinal axis oriented substantially parallel to a direction of flow of liquid past the source. A boundary surface between the source and a liquid to be treated is provided with one or more cleaning elements arranged longitudinally on the boundary surface. The cleaning elements and the boundary surface are arranged to be rotationally moveable relative to one another around the longitudinal axis of the source.

Abstract: The invention provides an injector device for a water treatment apparatus, and a method of use. The injector device comprises a first coupling for fluid connection to a source of liquid to be treated; and a second coupling for fluid connection to at least one liquid treatment vessel arranged to expose liquid in the vessel to ultraviolet radiation in an advanced oxidation process reaction. The device comprises at least one injection port for injecting at least one gas into a liquid flowing through the injector device. The injector device is at least partially formed from a material that is transmissive to ultraviolet radiation. In another aspect, a water treatment apparatus defines a plurality of parallel flow streams between the inlet of the apparatus and the at least one liquid treatment vessel. The injector device comprises an injection port for each of the plurality of parallel flow streams.

Abstract: An apparatus for use in a liquid treatment process, and a method of use is described. The apparatus comprises an inlet configured to be connected to a source of liquid to be treated and an outlet for discharging liquid from the apparatus. At least one liquid treatment vessel or conduit is disposed between the inlet and the outlet, and is arranged to expose liquid in the vessel to ultraviolet radiation in an advanced oxidation process reaction. A source of ultraviolet radiation extending along the liquid treatment vessel or conduit, such that an annular flow volume is defined in the vessel or conduit around the source of ultraviolet radiation. A rotary device is disposed in the annular flow volume and a drive mechanism drives rotation of the rotary device. The rotary device is operable to induce cavitation in a liquid present in the annular flow volume.

Abstract: An apparatus for use in a liquid treatment process, and a method of use is described. The apparatus comprises an inlet configured to be connected to a source of liquid to be treated and an outlet for discharging liquid from the apparatus. At least one liquid treatment vessel or conduit is disposed between the inlet and the outlet, and is arranged to expose liquid in the vessel to ultraviolet radiation in an advanced oxidation process reaction. A source of ultraviolet radiation extending along the liquid treatment vessel or conduit, such that an annular flow volume is defined in the vessel or conduit around the source of ultraviolet radiation. A rotary device is disposed in the annular flow volume and a drive mechanism drives rotation of the rotary device. The rotary device is operable to induce cavitation in a liquid present in the annular flow volume.

Abstract: The invention provides a water treatment apparatus and method of use. The apparatus comprises an inlet configured to be connected to a source of liquid to be treated, and at least one liquid treatment vessel arranged to expose liquid in the vessel to ultraviolet radiation in an advanced oxidation process reaction. A source of ultraviolet radiation comprises a longitudinal axis oriented substantially parallel to a direction of flow of liquid past the source. A boundary surface between the source and a liquid to be treated is provided with one or more cleaning elements arranged longitudinally on the boundary surface. The cleaning elements and the boundary surface are arranged to be rotationally moveable relative to one another around the longitudinal axis of the source.

Abstract: The invention provides an injector device for a water treatment apparatus, and a method of use. The injector device comprises a first coupling for fluid connection to a source of liquid to be treated; and a second coupling for fluid connection to at least one liquid treatment vessel arranged to expose liquid in the vessel to ultraviolet radiation in an advanced oxidation process reaction. The device comprises at least one injection port for injecting at least one gas into a liquid flowing through the injector device. The injector device is at least partially formed from a material that is transmissive to ultraviolet radiation. In another aspect, a water treatment apparatus defines a plurality of parallel flow streams between the inlet of the apparatus and the at least one liquid treatment vessel. The injector device comprises an injection port for each of the plurality of parallel flow streams.