Abstract:
Apparatus for the purification of liquid, such as water, by exposing the same to ultraviolet lamp, embodying means forming an annular passageway through which water may flow in surrounding relation to an electric lamp of a type producing ultraviolet light and ultraviolet light-responsive means for shutting off the flow of water therethrough in response to a decrease in the intensity of the ultraviolet light passing through the water when such intensity falls below a predetermined value. The apparatus includes a protective tube of quartz glass surrounding the ultraviolet lamp and wiper means movable in response to the turning off and on of the flow of water through the apparatus to wipe the external surface of the quartz tube. Means is also provided for preventing the formation of clouded areas on the glass of the lamp due to the positioning of the wiper means at one location surrounding the lamp during long periods of nonoperation of the wiper means while the lamp is on. Means is provided for preventing the wiper means from interferring with the flow of ultraviolet light flowing to the light responsive means by which the flow of water is cut off.
Abstract:
An embodiment provides a device for cleaning a sleeve of an ultraviolet light source, including: the ultraviolet light source for the disinfection of a fluid, wherein the sleeve surrounds the ultraviolet light source; a cleaning composition encapsulated in a polymer material to form a compound; a canister around and in contact with the sleeve and encapsulating the compound against the sleeve thereby placing the compound in a location adjacent to the sleeve, wherein the polymer material dissolves at a pH above a target value above the polymer material dissolution point releases the cleaning composition. Other aspects are described and claimed.
Abstract:
A liquid treatment module (2), configured for ultraviolet (UV)-light treatment of a liquid (4) flowing through a first treatment chamber (6) defined as a first elongated circumferential hollow cavity (8) between an outer surface (10) of a first translucent inner sleeve (12) and an inner surface (16) of a first outer sleeve (18′) configured to enclose said first translucent sleeve (12). The inner sleeve (12) is arranged to protect and include a UV-light treatment lamp (14). The module comprises a module inlet connection (20) configured to receive liquid to be treated and a module outlet connection (22) configured to expel liquid treated by the liquid treatment module. The module comprises: —first liquid flow guiding members (24′) configured to guide and direct a liquid flow (26) from said module inlet connection (20) into said first treatment chamber (6), —second liquid flow guiding members (28′) configured to guide and direct a liquid flow (30) from said first treatment chamber (6) into a second treatment chamber (32′), and —third liquid flowing guiding members (34′) configured to guide and direct a liquid recirculation flow (36) from said second treatment chamber (32′) back into the first treatment chamber (6) again.
Abstract:
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.
Abstract:
A purifying method for photochemical elimination of xenobiotics present in water. The purifying device is used which has a photochemical reactor unit having at least one inlet for contaminated water and one outlet for purified water, it provides a flow path for continuously flowing water from said inlet to said outlet, and is equipped with a radiation source module providing ultraviolet radiation in a wavelength range ranging from 100 to 280 nm. The method includes performing ultrafiltration, thereby removing suspended and solvated macromolecular matter from the water; conducting the permeate via the at least one inlet into the photochemical reactor unit; subjecting the water flowing from said inlet to said outlet to ultraviolet radiation at wavelengths ranging from 100 to 280 nm, thereby generating hydroxyl radicals initiating degradation of said xenobiotics; and supplying air or dioxygen into the water, thereby enhancing the initiated oxidative degradation of said xenobiotics.
Abstract:
The present invention pertains to an ultraviolet sterilization device (1) for irradiating with ultraviolet light a fluid flowing through a flow passage (6) having an inlet opening (4) and an outlet opening (5), and sterilizing the fluid. The ultraviolet sterilization device is equipped with a light guide (2) formed to tubular shape, and having a flow passage inside, as well as having a light scattering means (8) on the outside peripheral surface, and an ultraviolet light source (3) arranged on the outside surface of the light guide, for irradiating the light guide with ultraviolet light. Ultraviolet light from the ultraviolet light source irradiating the light guide is scattered by the light scattering means, and irradiates the flow passage through the inside peripheral surface of the light guide.
Abstract:
According to one embodiment, an ultraviolet water treatment apparatus includes an ultraviolet lamp unit provided with a first plumbing flange coupling on each of both ends thereof, and further provided therein with an ultraviolet irradiation tube including an ultraviolet lamp and a lamp protective tube configured to protect the ultraviolet lamp, and a cleaning device drive unit provided with a second plumbing flange coupling on each of both ends thereof and configured to drive a cleaning device configured to clean a surface of the lamp protective tube. The ultraviolet lamp unit and the cleaning device drive unit are coupled with each other on the first and second plumbing flange couplings.
Abstract:
A UV disinfection system for waste water and drinking water, includes a number of UV radiators arranged in cladding tubes, the cladding tubes being configured essentially symmetrically to a longitudinal axis, as well as a cleaning device for the cladding tubes. The cleaning device includes at least one cleaning ring for each cladding tube, which surrounds the cladding tube, the at least one cleaning ring having a scraper ring resting against the cladding tube, at least one drive for driving the cleaning ring in the direction of the longitudinal axis, and supply provisions for supplying pressurized fluid under elevated pressure from a pressure source to the scraper ring are provided, wherein pressure may be applied onto the scraper ring from the pressure source in the direction of the cladding tube.
Abstract:
An ultraviolet irradiation device includes a treatment vessel, an ultraviolet irradiation member, and a support member. The treatment vessel has a water inlet and a water outlet and through which water to be treated as a treatment target flows in a first direction from the water inlet toward the water outlet, the treatment vessel receiving the water to be treated through the water inlet and discharging the water to be treated through the water outlet. The ultraviolet irradiation member is provided inside the treatment vessel along a second direction crossing the first direction and which irradiates the water to be treated flowing through the treatment vessel with an ultraviolet ray. The support member is provided inside the treatment vessel along the second direction with both end portions of the support member being firmly fixed to wall surfaces of the treatment vessel.
Abstract:
Disclosed herein is an ultraviolet sterilizer having a watertight function. The ultraviolet sterilizer includes a housing and an ultraviolet sterilization unit. The housing has an inlet through which ballast water is drawn into the housing, and an outlet through which the ballast water is discharged from the housing after the ballast water has been sterilized. The ultraviolet sterilization unit is provided in the housing and includes an ultraviolet lamp applying ultraviolet rays to the ballast water to sterilize the ballast water. The ultraviolet sterilizer further includes a cap which supports each of the opposite ends of the ultraviolet sterilization unit and is watertightly coupled to the housing. Thus, even if the ultraviolet sterilization unit is damaged, ballast water is prevented from being drawn into a reception space which contains external devices, and explosive gas which may cause the ultraviolet sterilizer to explode is also prevented from entering the cap.