A system including a tube for transferring fluid and a lighting assembly. The lighting assembly includes a housing having an opening that is configured to receive the tube and one or more light sources configured to emit high intensity narrow spectrum light in a direction towards the tube when the tube is received by the opening.

An ultraviolet light-emitting faucet includes an inlet assembly, an outlet assembly, an operation assembly, a water-proof light-emitting module and a light guide. The operation assembly includes a conduit for connecting an inlet channel of the inlet assembly to an outlet channel of the outlet assembly. The conduit includes a cave, an optical channel, and an operation chamber including a first open end in communication with the cave and a second open end in communication with the optical channel. The water-proof light-emitting module is located in the cave and operable to cast ultraviolet light and visible light into the operation chamber through the first open end of the operation chamber. The visible light further goes into the optical channel through the second open end of the operation chamber. The light guide is supported on the operation assembly and operable to guide the visible light out of the optical channel.

An ultraviolet C (UV-C) disinfection device includes a UV-C light-emitting diode (LED) illuminator which includes a UV-C source module and a UV-C LED coupling module. The UV-C source module includes a heat spreader and a UV LED chip that is mounted on the heat spreader which is configured to be mounted on a printed circuit board (PCB). The UV-C LED coupling module includes a holder and a rod configured to carry a UV-C light emitted from the UV-C LED chip from a first distal end of the rod to an opposite second distal end of the rod such that the UV-C light gets leaks out from a side of the rod to deliver at least a portion of the UV-C light to a surrounding of the rod, with the rod secured with the holder positioning the rod onto the UV-C chip.

A fluid disinfecting system includes a straight fluid directing conduit and a light source disposed on a side of the fluid directing conduit. The light source is operative to emit ultraviolet light into the fluid directing conduit, such that one or more cross sections of said fluid directing conduit are saturated with ultraviolet light. Any fluid passing through the fluid directing conduit is necessarily exposed to the ultraviolet light.

A storage container includes an input portion for receiving and filtering a source liquid to form an output liquid, a storage portion for storing the filtered liquid, and a base portion disposed below the storage portion including a UV light source for providing transmitted UV light to the filtered liquid, a UV light detector disposed an optical path length away from the UV light source for detecting received UV light through the filtered liquid in response to the transmitted UV light, a processor for determining an absorption or a transmission percentage in response to the transmitted UV light and the received UV light, for determining a safe condition, in response to the absorption or the transmission percentage respectively not exceeding or exceeding predetermined criteria, and one or more indicators for indicating that the liquid is safe for consumption to a user, in response to the safe condition.

A catalytic reactor using catalyst-coated optical fiber technology that will allow the control of light and its emission mode to quantitatively optimize catalytic degradation of off-flavor compounds. This degradation can be greatly enhanced by increasing the surface area of the catalyst. Coating individual transparent optical fibers and aligning them in a canister configuration allows the treatment of large volumes of water in portable and scalable reactors.

A photoreactor including a reservoir configured to hold water, the reservoir defining an inlet and an outlet, and a multiplicity of optical fiber assemblies positioned in the reservoir. Each optical fiber assembly includes one or more optical fibers coated with a composition comprising a photoresponsive polymer and a light source optically coupled to the one or more optical fibers. The photoresponsive polymer undergoes a change from an initial state to an irradiated state when irradiated with light from the light source, and photoresponsive polymer in the irradiated state is adapted to bind an ion from the water.

A fluid disinfecting system includes a straight fluid directing conduit and a light source disposed on a side of the fluid directing conduit. The light source is operative to emit ultraviolet light into the fluid directing conduit, such that one or more cross sections of said fluid directing conduit are saturated with ultraviolet light. Any fluid passing through the fluid directing conduit is necessarily exposed to the ultraviolet light.

A self-cleaning ultraviolet wastewater disinfection unit and method are provided. The disinfection unit has a wastewater treatment chamber comprising a UV lamp for treating/disinfecting the wastewater. A plurality of pieces of media may be positioned in the treatment chamber. When wastewater is present in the chamber, gas is injected into the wastewater through a gas inlet conduit. The gas agitates the pieces of media in the wastewater to cause the pieces of media to rub against the UV lamp unit to remove matter that has accumulated on the UV lamp unit. The removal of accumulated matter on the UV lamp and other surfaces in the chamber may improve the efficiency and effectiveness of the disinfecting unit. Furthermore, the cleaning operation may be performed automatically at scheduled periods to increase the time between major cleanings of the unit.

The invention relates to an irradiation chamber (300) for a liquid purification apparatus using ultraviolet light irradiation against the reproduction of pathogenic microorganisms, comprising an inlet portion (302), an outlet portion (303), and a main portion (301) having an elongated shape, the irradiation chamber (300) having an internal surface defining an cavity, the irradiation chamber (300) being provided with ultraviolet light emitting means configured to irradiate liquid in the irradiation chamber (300) with ultraviolet light, the main portion (301) having a shape enlarged compared to the inlet portion (302). The internal surface of the irradiation chamber (300) defining the cavity is a three dimensional rounded surface, having no edge which forms a recess. The invention also relates to a liquid purification apparatus and to a beverage dispenser.