There is described a water purifying apparatus comprising: (i) at least one water inlet; (ii) an ultra-violet (UVC) radiation chamber connected to the water inlet(s); (iii) a plurality of UVC light emitting diodes (UVC-LEDs) for the emission of UVC light into the radiation chamber; (iv) a control to operate UVC-LEDs in use, and (v) at least one UVC-LED aging monitor to provide feedback to the control.

A system for sanitizing and/or disinfecting fluid within a pool or a spa comprising a power supply, at least one ultraviolet light-emitting diode and a processor in communication with the power supply and the at least one ultraviolet light-emitting diode. The at least one ultraviolet light-emitting diode is mounted with respect to the pool or the spa and is in contact with the fluid within the pool or the spa. The processor drives the at least one ultraviolet light emitting diode to emit ultraviolet light at a wavelength to sanitize and/or disinfect the fluid within the pool or the spa.

A sterilizer may include: a first pipe having an inner wall with a light reflecting property; a second pipe disposed in the first pipe so as to pass fluid therethrough and formed of a light transmitting material; and a plurality of UV LEDs arranged on the inner wall of the first pipe and configured to irradiate sterilization UV light onto the fluid.

A waste treatment system including at least one treatment chamber through which a fluid to be treated is moved in a fluid flow, the or each treatment chamber including at least one of a number of ultraviolet light sources, and at least one dispersion assembly located at a base of the treatment chamber to disperse at least one sterilizing agent supplied to the treatment chamber in a counter flow direction to the fluid flow.

An ultraviolet irradiation unit of the present invention includes a plurality of ultraviolet irradiation modules arranged and spaced apart from each other at intervals. Each of the ultraviolet irradiation modules includes a light source emitting ultraviolet rays, and a reflector arranged on an ultraviolet emission side of the light source and reflecting part of the ultraviolet rays emitted from the light source toward the object to be processed.

Proposed is a UV sterilizer. In a UV sterilizer according to an embodiment of the present disclosure, a light source module that emits ultraviolet (UV) light is provided between an upper body and a lower body where a fluid flows, thereby sterilizing a fluid by irradiating the flowing fluid with UV light.

A water disinfection chamber includes one or more UVC LEDs. The chamber is constructed of Teflon or employs a Teflon PTFE liner to increase UV reflections through the volume of the chamber. LEDs are positioned in specific locations to both provide maximum UV intensity in the main fluid flow path and an angle to allow enough reflections to fill the chamber with UV light to disinfect the fluid flowing through the chamber. The chamber is scalable in size and in the number of LEDs employed including the number of rings where LEDs are located.

An UV-C device may include several UV-C light sources (e.g., UV-C LEDs) and such UV-C LEDs may have UV-C reflecting structures arranged to direct UV-C in a particular direction and at a particular size and shape. Doing so may, for example, increase the UV-C in a particular direction or working area. A UV-C generating device may be utilized in an air duct to sterilize air through that air duct. A UV-C generating device may, for example, be utilized to increase the amount of UV-C that enters a UV-C fiber optic tube. A UV-C generating device may be utilized, for example, to inactivate one or more virus (e.g., one or more different viruses and/or one or more claves of the same virus) and a UV-C inactivated virus may be utilized as a vaccination. A facility may be provided that received strains from the same clave and/or different claves and that UV sterilizes (e.g., UV-C sterilizes) the strains and combines the strains into a combinational UV-C vaccination of multiple UV-C inactivated strains.

A UV-C generator is provided where multiple UV-C LEDs are provided around a work area (e.g., a tube) in order to sterilize contaminants in that work area (e.g., virus and/or bacteria) to provide a sterilization device for substances in, or flowing through, the work area. The tube may gates to change the speed and/or direction of a flowing working substance and may have a spiraling channel in the tube such that the length of travel in the spiraling channel is longer than the tube. Such UV-C generator devices may be utilized, for example, to sanitize air flowing through devices such as a ventilator or face mask.

A UV-C generator is provided where multiple UV-C LEDs are provided around a work area (e.g., a surface) in order to sterilize contaminants in that work area (e.g., virus and/or bacteria). The sterilization device can be utilized, for example, in a wand, broom, set distance surface sterilizer, hand sanitizer, foot sanitizer, conveyer sanitizer, or any other sanitizer. Mating structures may be included to mate multiple devices to extend work area that may be impacted. The devices may be portable and may include one or more rechargeable batteries.