A UV/O.sub.3/H.sub.2O.sub.2 advanced oxidation reactor includes a water inlet pipe, a water outlet pipe, an ultraviolet reactor, an H.sub.2O.sub.2 adding device and an O.sub.3 adding device. The ultraviolet reactor has a plurality of ultraviolet lamps embedded therein, and the ultraviolet lamps are arranged at an angle with respect to partition plates. The water inlet pipe is connected to a water inlet in a lower portion of the ultraviolet reactor, and the water outlet pipe is connected to a water outlet in an upper portion of the ultraviolet reactor. The H.sub.2O.sub.2 adding device and the O.sub.3 adding device are arranged on a connecting pipe of the water inlet pipe. After raw water is pressurized, H.sub.2O.sub.2 is added into the raw water through the H.sub.2O.sub.2 adding device, then ozone is added in the raw water through a water injector, and finally the raw water enters the ultraviolet reactor.

A UV treatment cartridge having an exterior housing and a UV treatment module located inside of the exterior housing. The UV treatment module having a UVLED array for UV treatment of a fluid passing through the UV treatment module. An internal annular space between the exterior sidewall and the module sidewall forms an entry flow path to the UV treatment module thereby substantially balancing fluid pressure acting on the inside of the module sidewall and acting on the outside of the module sidewall.

A method and UV reactor, the UV reactor having a longitudinal flow chamber, an input, and an output for fluid flow entry and exit, where the input has an inlet pipe followed by an inlet cone, said UV reactor having at least one longitudinal UV-lamp, and where the UV-lamp has a flow path from the input to the output via the flow chamber, for UV radiation exposure as fluid flows from the input to the output to receive a UV dose, so that the fluid applied to the UV reactor via the input of the flow chamber, is applied a uniform helical flow path where all the fluid applied to the UV reactor passes at least one UV lamp at a distance to receive a prescribed UV dose related to the current UV reactor, during passing of the fluid inside the UV reactor.

A UV reactor for disinfecting water. The UV reactor may include a cooling chamber in which heat from a UV source may be transferred to the water flowing through the UV reactor. The UV reactor may include driver circuitry operable to determine status information, such as health, of the UV source. The UV reactor may include a gas discharge path operable to substantially prevent accumulation of gas within a water treatment chamber.

A water sterilizing tube includes a shell, an outer tube, an inner tube and a UV lighting module. The shell has a first end, a second end and an annular wall. The first end is provided with a water inlet and a water outlet. The outer tube is coaxially disposed in the shell. An end of the outer tube communicates with the water outlet. An air gap is formed between the outer tube and the annular wall. The inner tube is coaxially disposed in the outer tube. An end of the inner tube communicates with the water inlet. An extended channel is formed between the outer and inner tubes. The UV lighting module has a UV light corresponding to the outer tube. An axis line of the outer and the inner tube and a direction of light emitting of the UV light are superposed with each other.

A fluid sterilization apparatus includes: a flow passage tube in which a processing passage where a passing fluid is sterilized is formed; a first light source that irradiates the processing passage with ultraviolet light; an inflow passage formed in a direction that intersects an outer circumferential surface of the flow passage tube; and a communication passage that causes the inflow passage to communicate with the processing passage. The communication passage has a narrow passage in the middle of a path from the inflow passage toward an opening of a first end, the narrow passage being narrower than a passage toward the inflow passage.

A device is presented for disinfecting a fluid by means of UV light. The device includes: a reactor chamber, which is arranged in the container and adapted to receive a fluid to be disinfected; an inlet, via which the fluid can be introduced into the reactor chamber; an outlet, via which the fluid can leave the reactor chamber; and an irradiation device, which is adapted to provide UV-light rays and to irradiate into the reactor chamber in order to disinfect the fluid therein; wherein the reactor chamber with the inlet and the outlet is adapted to transport the fluid by way a turbulent streamflow from the inlet to the outlet and a fluid guide device facilitating the formation of the turbulent streamflow is provided which has a fluid-guiding element in a reactor chamber area adjacent to the inlet.

A UV reactor irradiates a flow of fluid with UV radiation. The reactor comprises: a fluid conduit defined by a heat conducting conduit body comprising one or more heat conducting walls for permitting a flow of fluid therethrough; a UV-LED operatively connected to a PCB and oriented for directing radiation into the fluid conduit. The PCB comprises a heat conducting substrate having a first surface. The conduit body is in thermal contact with the first surface of the heat conducting substrate. Heat is dissipated from the UV-LED via the heat conducting substrate, the thermal contact between the first surface of the heat conducting substrate and the heat conducting conduit body, and from the one or more heat conducting walls of the heat conducting conduit body to the fluid flowing through the fluid conduit.

A sterilization apparatus is provided at a discharge port for supplying a liquid. The sterilization apparatus includes: an annular light guide that has a connection end that is connected to the discharge port and an open end that is on the opposite side of the connection end, and that forms a flow passage communicating with the discharge port; and a light source that allows ultraviolet light to enter the light guide such that the ultraviolet light is transmitted through the light guide while being reflected between an inner circumferential surface and an outer circumferential surface of the light guide. The sterilization apparatus irradiates a liquid that is in contact with the inner circumferential surface of the light guide with the ultraviolet light for sterilization.

An in-line fluid purification system uses a jacket (26) surrounding a fluid passageway (28), formed of a UV transmissive material. The jacket (26) may be surrounded by a UV reflective material (30). UV radiation (20) is coupled into the jacket (26), and the jacket (26) disperses and reflects the radiation over the entire cross section of the passageway (28). In this way, UV illumination of the full cross section of a fluid passageway (28) is ensured.