An ultra-violet (UV) assembly for treating a fluid with UV light has a housing. A mounting bracket defines a slot and a hollow. A UV source includes: a tab that twist-locks in the slot; a connector that aligns with the hollow; and an RFID tag. An RFID antenna interacts with the RFID tag to emit a RFID tag position signal. A flow switch sends a flow signal. The flow switch includes: a guide; a shaft slidably mounted to the guide; a disc on the shaft; a magnet coupled to the shaft; and a sensor for generating a magnet position signal. During no flow, a spring biases the shaft so that the magnet is positioned to be detected by the sensor. During flow, the flow applies pressure to move the disc and, in turn, the magnet moves to be positioned to not be detected by the sensor.

A sterilizer apparatus for treating liquids, especially opaque and turbid ones characterized by a low UV radiation penetration depth, utilizing a novel tangential in-line mixer design inside an elongated reactor chamber built around an ultraviolet lamp. Other applications and adaptations of the presently disclosed apparatus include mixing fluids (including liquids and/or gases) as part of various industrial processes.

The invention provides an injector device for a water treatment apparatus, and a method of use. The injector device comprises a first coupling for fluid connection to a source of liquid to be treated; and a second coupling for fluid connection to at least one liquid treatment vessel arranged to expose liquid in the vessel to ultraviolet radiation in an advanced oxidation process reaction. The device comprises at least one injection port for injecting at least one gas into a liquid flowing through the injector device. The injector device is at least partially formed from a material that is transmissive to ultraviolet radiation. In another aspect, a water treatment apparatus defines a plurality of parallel flow streams between the inlet of the apparatus and the at least one liquid treatment vessel. The injector device comprises an injection port for each of the plurality of parallel flow streams.

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 water treatment system includes an actinic radiation reactor and at least one ultraviolet (UV) lamp disposed within a quartz tube within the actinic radiation reactor. The at least one UV lamp includes a lamp tube including a gas that emits ultraviolet light responsive to electrical excitation, a first pinch extending from a first end of the lamp tube and a second pinch extending from a second end of the lamp tube, and a first end cap coupled to the first pinch and a second end cap coupled to the second pinch. The first end cap and second end cap are dimensioned to center the lamp tube coaxially within the quartz tube.

An apparatus for use in a liquid treatment process, and a method of use is described. The apparatus comprises an inlet configured to be connected to a source of liquid to be treated and an outlet for discharging liquid from the apparatus. At least one liquid treatment vessel or conduit is disposed between the inlet and the outlet, and is arranged to expose liquid in the vessel to ultraviolet radiation in an advanced oxidation process reaction. A source of ultraviolet radiation extending along the liquid treatment vessel or conduit, such that an annular flow volume is defined in the vessel or conduit around the source of ultraviolet radiation. A rotary device is disposed in the annular flow volume and a drive mechanism drives rotation of the rotary device. The rotary device is operable to induce cavitation in a liquid present in the annular flow volume.

An apparatus for the treatment of a liquid that includes a chamber having at least one inner surface, the chamber adapted for passage of a fluid therethrough. The chamber is at least 80 percent enclosed. The apparatus also includes an optional ultraviolet-transmissive tube disposed within the chamber and also adapted for the passage of the liquid therethrough. The apparatus further includes an ultraviolet lamp disposed within the chamber and, optionally, within the ultraviolet-transmissive tube. A reflective material is interposed between the chamber and the transmissive tube. The reflective material is adapted so as to reflect at least a portion of light emitted by the ultraviolet lamp, wherein the reflective material is at least 80 percent reflective.

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.

A disinfection system including an air mover, wherein the air mover is configured to direct air flow; an inlet filter implement; an inlet flow control valve; a decontamination chamber apparatus, in which the decontamination chamber apparatus comprises an inlet section or port, an inner wall, and an outlet section or port; a UV light source, wherein the UV light source is configured to produce light in the UVC wavelength, wherein the UV light is configured to disinfect air that passes through the decontamination chamber apparatus; an outlet flow control valve, wherein the outlet flow control valve is configured to recirculate the disinfected air; and wherein the decontamination chamber apparatus is configured to be operable for impeding or obstructing the flow of air.

A fluid sterilization device according to an embodiment includes a tubular portion; a supply head provided in one end portion of the tubular portion; a discharge head provided in the other end portion of the tubular portion, and including a hole penetrating through the discharge head between an end face on a tubular portion side and an end face on a side opposite the tubular portion side; a substrate provided inside the hole of the discharge head; a light-emitting element provided on a surface on the tubular portion side of the substrate, and configured to emit an ultraviolet ray; and a window provided in the discharge head, and facing the light-emitting element. A surface roughness Ra of an inner surface of the tubular portion is 50 nanometers (nm) or less.