This disclosure relates to water treatment devices that utilize photocatalytic oxidation to generate oxidizing agents. A water treatment device is configured to be connected in line between a water supply and a washing machine. Wash water from the water supply passes into the device and through a conduit of the device. A reaction chamber includes an ultraviolet lamp and a catalyst cell for generating the oxidizing agents. The generated oxidizing agents are injected into the wash water as it passes through the conduit. The water treatment device also includes a flow sensor placed in line with the conduit to determine when the device should be activated to generate the oxidizing agents.

A UV reactor for treating water, the reactor includes a UV source, a tube positioned around the UV source, a surrounding structure coaxially surrounding the tube, a flow path positioned between the tube and the surrounding structure for the flow of water to be treated, and a diffusive surface positioned around the surrounding structure to reflect UV light from the UV source back into the flow path.

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.

A processing liquid circulating apparatus includes an ultraviolet radiation applying unit and a cleaning unit for cleaning a water flow passageway from a waste liquid tank to a clear water pump. The ultraviolet radiation applying unit includes an ultraviolet lamp, a quartz glass tube defining therein a first space surrounding the ultraviolet lamp, such that gas can be introduced into and discharged from the first space, and a frame defining therein a second space surrounding the quartz glass tube, such that clear water can be introduced into and discharged from the second space. The cleaning unit has an oxygen charge unit for charging oxygen into the first space, a first pipe interconnecting the second space and the clear water tank, and a second pipe interconnecting the ultraviolet radiation applying unit and the waste liquid tank.

A fluid disinfection device is provided for integration into a high flow rate, controlled pressure, closed recirculation system, the device for disinfecting medical devices and lines in the system using high intensity UV-C light. A method of disinfecting a high flow rate, controlled pressure, closed recirculation system that includes a medical device is also provided.

A portable liquid filtration device includes a portable housing, an inlet configured to receive non-potable water, and an ozone chamber positioned within the portable housing. The ozone chamber is configured to generate an ozone gas from received air. The device also includes a filtration duct positioned within the portable housing and downstream from the inlet. The filtration duct includes at least one advanced oxidation (AO) chamber configured to mix the received water with the ozone gas, and at least one ultraviolet (UV) chamber downstream from the at least one AO chamber and including a UV lamp positioned adjacent the water within the filtration duct. The device further includes an outlet positioned on the portable housing and downstream from the filtration duct. The filtration duct is operable to output at least 200 liters per hour of the received water from the outlet as potable water.

A sterilizer apparatus for treating liquids or gasses, utilizing the low wavelength, ozone producing, vacuum UV wavelengths, utilizing a novel reactor chamber built around an ultraviolet lamp operating in the presence of either a vacuum or an oxygen-free medium.

A UV steriliser assembly and associated method for disinfection purposes. The assembly includes a reflector (16) and a UV source, e.g. a lamp (10), configured to emit ultraviolet light at a range of wavelengths. Dependent on the assembly configuration, the reflector (16) is configured to permit or inhibit transmission therethrough of particular UV wavelengths known to assist in the photo-repair of micro-organisms. Transmission of wavelengths known to be destructive to micro-organisms can also be targeted. In this way the effectiveness of the assembly for sterilisation purposes can be optimised.

A generator (100, 101, 102, 103, 104, 105, 106, 107, 108, 109) is used for producing a treated oxygen containing gas for treating a body of matter (11). The generator (100, 101, 102, 103, 104, 105, 106, 107, 108, 109) extends along a generator axis and has an axially extending hollow sleeve (12) defining an internal space (14). At least one lid (16) is located at one of the axial ends of the sleeve (12) and a UV light source (18) and at least one magnet (20) are located along the axis.

A sterilization apparatus is provided with: a light source, which has a semiconductor light-emitting element that emits ultraviolet light; a housing, which forms a flow passage through which a fluid subject to sterilization passes; a light receiving unit, which receives a portion of the ultraviolet light emitted from the light source and detects the amount of ultraviolet light that has been received; and a control unit, which controls the output of the semiconductor light-emitting element based on information regarding the amount of ultraviolet light acquired from the light receiving unit. The housing has an incidence portion on which ultraviolet light becomes incident and a reflection portion, which reflects the ultraviolet light at the inner surface thereof. The light receiving unit is provided at a position where the light receiving unit can receive the portion of ultraviolet light that has been transmitted through the reflection portion.