Abstract:
A swimming pool water sanitizing unit (10) with an ozone generator (22) and a separate ultraviolet (UV) reactor chamber (20) within the same housing unit (12). The ozone generator (22) may include a water jacket gap (74) between the ozone generator chamber (54) and the outer casing (72) that passes pool water through the gap for cooling. Either of the ozone generator (22) and the UV reactor chamber (20) may include UV intensity sensors (51,88) to help predict the life of the UV bulb therein. The UV reactor chamber (20) may include rotating water paddle blades (90) to stir up the water within the chamber for enhanced exposure to the UV light. A diverter valve (17) enables diversion of ozone enriched fluid to the pool pump (4) in addition to the UV reactor chamber (20).
Abstract:
A reactor that operates with ultraviolet light emitting diodes (UV-LEDs) to attain UV photoreactions or UV photo-initiated reaction in a fluid flow for various applications, including water purification. The UV-LED reactor is comprised of a conduit means for passing fluid flow, an ultraviolet light emitting diode (UV-LED), and a radiation-focusing element to focus the UV-LED radiation to the fluid in the longitudinal direction of the conduit proportionally to the fluid velocity in the cross section of the conduit.
Abstract:
There is described an on-line device for controlling a fluid treatment process configured to inactivate a microorganism in a flow of fluid using ultraviolet radiation and a chemical disinfectant. The device comprises: a memory for receiving a calculated database of dose response for the ultraviolet radiation and for the chemical disinfectant for a fluid treatment parameter; means to obtain input data about the fluid treatment parameter from the process; means to compare the input data with calculated database; and means to adjust one or more of the amount ultraviolet radiation and the chemical disinfectant added to the flow fluid in response to a difference between the input data and calculated database. There is also described a process for controlling a fluid treatment process configured to inactivate a microorganism in a flow of fluid using ultraviolet radiation and a chemical disinfectant.
Abstract:
A combined ultraviolet light and ozone fluid sterilization system for sterilizing fluid that includes a removable and replaceable internal reflective sleeve is provided. The sterilization system includes a lower housing, an upper housing, a winged nut, a UV light manifold, a plurality of UV light assemblies, a plurality of UV light securing assembly, and a reflective sleeve. The UV light assemblies include a UV light and an ozone siphon pipe positioned within a quartz casing, which is sealed with an endcap. The ozone siphon pipe of each UV light assembly can be operatively connected with a venturi for introducing ozone into the fluid. The sleeve includes perforated ends which create a more uniform flow within the sleeve, reduce air pockets, normalize the residence time of the fluid molecules, normalize the velocity of the fluid, and increase overall uniformity of treatment.
Abstract:
The invention provides an object (10) that during use is at least partly submerged in water, the object (10) further comprising an anti-biofouling system (200) comprising an UV emitting element (210), wherein the UV emitting element (210) is configured to irradiate with UV radiation (221) during an irradiation stage one or more of (i) a part (111) of an external surface (11) of said object (10) and (ii) water adjacent to said part (111) of said external surface (11), wherein the light source (220) is at least controllable between a first UV radiation level and a second UV radiation level, wherein the first UV radiation level is larger than the second UV radiation level, wherein the object (10) is selected from the group consisting of a vessel (1) and an infrastructural object (15), wherein the object (10) further comprises a control system (300) configured to control said UV 221 radiation (221) as function of input information comprising information of one or more of (i) a location of the object (10), (ii) movement of the object (10), (iii) a distance (d) of the object (10) to a second object (20), and (iv) a position of the part (111) of the external surface (11) relative to the water.
Abstract:
The invention relates to an emitter arrangement (1) comprising a UV irradiation source (2), a cladding tube (3) surrounding the UV irradiation source (2), said cladding tube having an end face (13) on an open end (12), and a UV-C sensor (6) having a sensitive area, wherein the UV-C sensor (6) is in optical connection with the end face (13) of the cladding tube (3), so that the sensitive area of the UV-C sensor (6) can detect the UV irradiation emerging from the end face (13) of the cladding tube (3) during the operation of the UV irradiation source (2).
Abstract:
Provided herein are systems and methods for the treatment and purification of fluids (e.g., water) using a light-emitting diode (LED) light source. In one embodiment, for example, there is provided a fluid flow conduit having an LED light source and a photo-catalytic material disposed therein. The LED light source emits ultraviolet light with a peak wavelength between about 265 nm and about 400 nm. In operation, the photo-catalytic material absorbs the ultraviolet light from the LED light source, and releases free radicals into the fluid. The free radicals then degrade organic substances (e.g., bacteria) in the fluid.
Abstract:
There is provided a ballast water treatment system and method that allows ballast water which is to be purified to receive a prescribed dose of ultraviolet rays even when the ballast water varies in transmittance. A ballast water treatment system (10) includes an ultraviolet irradiation device (23) which irradiates ballast water flowing through a treatment line (a pipe (34, 36)) with ultraviolet rays, and a control unit (100). The ultraviolet irradiation device (23) includes a light source which emits ultraviolet rays, and an illuminance sensor sensing an illuminance of ultraviolet rays received by the ballast water. The control unit (100) controls the ultraviolet irradiation device (23) to maintain at a prescribed dose a dose calculated using an illuminance (I) sensed by the illuminance sensor and a flow rate of ballast water which flows through the ultraviolet irradiation device (23). When the sensed dose cannot be maintained at the prescribed dose by controlling the ultraviolet irradiation device (23), the control unit (100) reduces a treatment flow rate of the ballast water which flows through the treatment line.