A UV disinfectant system may include a chamber having a wall that is transparent to a disinfecting radiation. Liquid may be flowed through the chamber for treatment by exposure to the radiation. The chamber may include a static mixer having vanes to impede laminar flow of the liquid during treatment. The vanes extend into the flow path of the liquid through the chamber. A gap is defined between the vanes and the transparent wall. A cabinet may house the chamber and radiation emitting bulbs. Blowers may be operably coupled to a temperature sensor and flow meter and positioned at a lower end and upper end of the cabinet to urge air out of the cabinet. The temperature sensor may include a thermocouple. The blowers may be variable speed blowers. The system may include a controller to control system operations. The controller may be remotely accessible to monitor or control operations.

A solution for treating a fluid, such as water, is provided. An ultraviolet transparency of a fluid can be determined before or as the fluid enters a disinfection chamber. In the disinfection chamber, the fluid can be irradiated by ultraviolet radiation to harm microorganisms that may be present in the fluid. One or more attributes of the disinfection chamber, fluid flow, and/or ultraviolet radiation can be adjusted based on the transparency to provide more efficient irradiation and/or higher disinfection rates. In addition, various attributes of the disinfection chamber, such as the position of the inlet(s) and outlet(s), the shape of the disinfection chamber, and other attributes of the disinfection chamber can be utilized to create a turbulent flow of the fluid within the disinfection chamber to promote mixing and improve uniform ultraviolet exposure.

There is described an apparatus for disinfecting a fluid, such as water. The apparatus includes a housing having a fluid inlet for inflow of a fluid to be disinfected, and a fluid outlet for outflow of the fluid to be disinfected. The apparatus further includes one or more light-emitting diodes (LEDs) operable to emit ultraviolet (UV) light for disinfecting the fluid to be disinfected. A fluid flow path extends from the fluid inlet to the fluid outlet. The fluid flow path is configured such that, when the fluid to be disinfected flows along the fluid flow path, the fluid to be disinfected flows sufficiently close to the one or more LEDs so as to absorb heat generated by the one or more LEDs.

A solution for treating a fluid, such as water, is provided. An ultraviolet transparency of a fluid can be determined before or as the fluid enters a disinfection chamber. In the disinfection chamber, the fluid can be irradiated by ultraviolet radiation to harm microorganisms that may be present in the fluid. One or more attributes of the disinfection chamber, fluid flow, and/or ultraviolet radiation can be adjusted based on the transparency to provide more efficient irradiation and/or higher disinfection rates. In addition, various attributes of the disinfection chamber, such as the position of the inlet(s) and outlet(s), the shape of the disinfection chamber, and other attributes of the disinfection chamber can be utilized to create a turbulent flow of the fluid within the disinfection chamber to promote mixing and improve uniform ultraviolet exposure.

A fluid processing apparatus includes: a casing having a fluid inlet pipe and a fluid outlet pipe; multiple rectifying plates with holes in parallel with each other provided within the casing on a side of the fluid inlet pipe, the rectifying plates being perpendicular to a longitudinal axis of the casing; and a light source for irradiating fluid passing from the fluid inlet pipe through the casing to the fluid outlet pipe with ultraviolet rays.

The present invention provides a method for water disinfection by exposing water, optionally simultaneously, to a combination of at least two ultraviolet (UV) irradiation sources, wherein at least one of said UV irradiation sources emits light at a wavelength of between 250 nm and 280 nm, and at least one of said UV irradiation sources emits light at a wavelength of between 285 nm and 310 nm; and an apparatus for carrying out said method.

This invention is directed to a method, system and apparatus for the treatment fluids. An apparatus for the treatment of a fluid comprises a fluid chamber and at least one ultraviolet light unit arranged at a periphery of the fluid chamber. The at least one ultraviolet light unit comprises at least one ultraviolet light emitting diode and an ultraviolet light directing element. The ultraviolet light directing element is configured to collimate at least a portion of the light emitted from the at least one ultraviolet light emitting diode in use such that the ultraviolet light rays emitted from each ultraviolet light unit are parallel in a first plane. Also described is a method for the cooling a light emitting diode in a fluid treatment system.

A fluid sterilization module includes an inner cylinder forming a processing flow path, a case portion in which the inner cylinder is accommodated, a member provided between an outer circumferential surface of the inner cylinder and an inner circumferential surface the case portion, a first chamber located in a region on a side of one end portion of the inner cylinder with respect to the member, in a gap between the inner cylinder and the case portion, a second chamber located in a region on a side of the other end portion of the inner cylinder with respect to the member, and a light emitting element provided in at least one of the one end portion and the other end portion of the inner cylinder, and configured to emit ultraviolet light to the object passing through the processing flow path.

System and method for treatment of a process fluid using ultraviolet light are provided. The system may have a wall, an inlet pipe and at least one length of brushes configured to brush a fluid along a side of the wall, generating a film on the fluid to be exposed to ultraviolet light as the fluid film flows along the wall. The system and method may further utilize at least one channel to provide fluid to the wall.

A fluid sterilizing device (1) includes barrel portion (5) having a channel where fluid to be sterilized flows; inlet (6a) formed on one end portion side of the barrel portion (5); outlet (7a) formed on the other end portion side of the barrel portion (5); a light source (3) that emits ultraviolet light toward the fluid; and a rectifier (12) mounted inside the channel and having a cylindrical through hole. The rectifier (12) includes inner circumferential region R.sub.in expanding from its center in the diameter direction of the channel, and outer circumferential region R.sub.out expanding outside the inner circumferential region R.sub.in. The ratio (t/d).sub.out of the panel thickness t relative to the diameter d of each through hole in the outer circumferential region R.sub.out is larger than the ratio (t/d).sub.in of the panel thickness t relative to the diameter d of each through hole in the inner circumferential region R.sub.in.