Abstract: There is described a fluid treatment system which may which may be used with radiation sources that do not require a protective sleeve—e.g., excimer radiation sources. An advantage of the present fluid system treatment is that the radiation sources may be removed from the fluid treatment zone without necessarily having to shut down the fluid treatment system, remove the fluid, break the seals which retain fluid tightness, replace/service radiation source and than reverse the steps. Instead, the present fluid treatment system allows for service/replacement of the radiation sources in the fluid treatment zone during operation of the fluid treatment system.

Abstract: There is described an excimer radiation lamp assembly. The lamp assembly comprises: an elongate member having an annular cross-section to define an elongate passageway aligned with a longitudinal axis of the lamp assembly; an electrode element in electrical connection with at least a portion of the elongate passageway; and a cooling element disposed in the elongate passageway, the cooling element being electrically isolated with respect to the electrode element.

Abstract: An ultraviolet wastewater or water treatment system is described and comprises a plurality of ultraviolet lamps where each lamp includes a protective cladding and where the ultraviolet lamps are disposed in vertical modules that form a bank of ultraviolet lamps. A series of beams are disposed over the ultraviolet lamps with each beam supporting a carriage thereon. Each carriage supports a scraper that extends downwardly therefrom for engaging and cleaning a module of ultraviolet lamps. A common drive source is operatively connected to the respective carriages for driving the carriages back and forth on the respective beams such that as the common drive source drives the carriages back and forth, the respective scrapers move back and forth cleaning the protective cladding extending around the respective ultraviolet lamps.

Abstract: A ventilation assembly for a machine for the preparation of radiopharmaceuticals. The ventilation assembly includes a suction apparatus and release apparatus for generating a circulation of air within a vacuum dispensing chamber, a product filling calibrator accommodated in the dispensing chamber and presenting a cavity accommodating a container to be filled with radiopharmaceutical, and a suction conduit adapted to connect a bottom portion of the accommodating cavity to the suction apparatus for creating a one-way flow in the accommodating cavity. Also, a machine that includes the ventilation assembly.

Abstract: A submersible pump with UV sterilization device includes a casing, at least one sterilization room and one water pump room provided in the casing, a first end cap and a second end cap separately fixed at the two ends of the casing, a front water inlet provided at the first end cap, a back water inlet connected to the water inlet of the sterilization room provided at the second end cap, and a reflection board provided at the internal wall of the sterilization room. A water pump is fixed in the water pump room, a water outlet is fixed above the impeller room of the water pump, the impeller room is connected to the water outlets of the sterilization room, a cold cathode UV sterilization device is provided in the sterilization room, the sterilization device is connected to the output end of an inverter fixed in the casing.

Abstract: A method and apparatus for treating a fluid using a wave energy uses a gas-sparged pipe configured to create a flow of the fluid in a thin film along a vortex path from a first end to a second end of the gas-sparged pipe, a first electrode and a second electrode that are at least partially disposed within the gas-sparged pipe, spaced apart from one another, and axially aligned with one another along a central axis of the gas-sparged pipe from the first end to the second end. The electrodes are used to create an open electrical arc to provide the wave energy directly exposing the fluid as the fluid flows along the vortex path in close proximity to and surrounding the electrical arc such that only a gas separates the fluid from the open electrical arc.

Abstract: An improved method and apparatus for radiopharmaceutical purification, the apparatus including a chromatographic separating device, a UV-absorption detector, a radioactivity detector and a collection container having a collection inlet valve located at a collection location. Propagation times of eluent between the UV-absorption detector and the radiation detector, as well as between one or both of the detectors and the collection inlet valve, are determined. UV-absorption and radiation data from the detectors are monitored, and an appropriate time period during which the collection valve should be opened is established. Preferably, monitoring and operation of the apparatus is under control of a computer. A user interface display may be provided to enable an operator to monitor the purification process, and to intervene as required and/or appropriate.

Abstract: An ultraviolet irradiation water treatment apparatus includes a vessel having a cylindrical side portion, and plural rod-shaped ultraviolet lamps are disposed in parallel with a central axis of the side portion in the vessel. A water inlet pipe through which water flows into the vessel is provided in an outer wall of the side portion at a position in a tangential direction of an inner periphery of the side portion.

Abstract: A device for subjecting air to UV(C) radiation comprises a UV(C) treatment chamber comprising a UV(C) source, a measuring device comprising one or more of a temperature sensor which measures the temperature on the wall of the UV(C) source; two temperature sensors downstream and upstream of the UV(C) source; and a UV(C) sensor for determining the intensity of the UV(C) radiation. The UV(C) source comprises at least one UV(C) lamp which is held by a lamp holder. The lamp holder comprises positioning elements for holding the measuring device and the lamp(s) in a fixed position. Electrical supply wires and signal wires are arranged such that they are shielded from the radiation from the UV(C) lamp(s).

Abstract: An ultraviolet irradiation water treatment apparatus includes a vessel having a cylindrical side portion, and plural rod-shaped ultraviolet lamps are disposed in parallel with a central axis of the side portion in the vessel. A water inlet pipe through which water flows into the vessel is provided in an outer wall of the side portion at a position in a tangential direction of an inner periphery of the side portion.

Abstract: A method and apparatus for providing a timed, synchronized dynamic alpha or beta particle source for testing the response of continuous air monitors (CAMs) for airborne alpha or beta emitters is provided. The method includes providing a radioactive source; placing the radioactive source inside the detection volume of a CAM; and introducing an alpha or beta-emitting isotope while the CAM is in a normal functioning mode.

Abstract: Some demonstrative embodiments of the invention include an illumination-based liquid disinfection device. The disinfection device may include, for example, a light transparent conduit to carry a flowing liquid to be disinfected, the conduit having an inlet to receive the liquid and an outlet to discharge the liquid, a substantially light transparent sleeve having external dimensions smaller than the internal dimensions of the conduit, the sleeve positioned within the conduit substantially perpendicular to the axis of symmetry of the conduit and a light source positioned within the sleeve.

Abstract: The invention presents a drinking water server having a configuration capable of suppressing generation of bacteria in a cold water tank, in a cold water pour tube, and in a pour valve. An opening part (2c) is formed in bottom side of a cold water tank (2), and a straight cold water pour tube (6) disposed horizontally in this opening part (2c) by way of a bent part (6b). An ultraviolet lamp (8) is disposed so as to reach up to a bottom part of the bent part (6b) by way of the opening part (2c) from inside of the cold water tank (2), so that ultraviolet rays emitted from the ultraviolet lamp (8) may be emitted uniformly both in the cold water tank (2) and in the duct of the cold water pour tube (6). As a valve body of a cold water pour valve (7), a diaphragm (71) for clogging the leading end of the cold water pour tube (6) is used, and dead angle of ultraviolet rays is eliminated.

Abstract: A radiation-shielding assembly can contain any of multiple containers of different sizes in a predetermined, fixed location within the assembly. A clamping system in of the assembly is able to clamp any of the containers so that they are held in the same fixed location within the assembly. The containers, regardless of size, are always located in the desired position within the shield. The positive location is achieved with out the use of separate components not attached to the assembly.

Abstract: Disclosed is a power-saving type safe drinking water discharge device to treat cold water from a cooling reservoir (110), in which water is temporarily stored and cooled, prior to discharging the water to the outside through a tap valve (120). A connecting tube (10), provided around an outer circumference thereof with a coolant tube (40), is provided between the cooling reservoir and the tap valve, such that the water, which is primarily cooled to a predetermined temperature in the cooling reservoir, is secondarily cooled while passing through the connecting tube, prior to being discharged through the tap valve. The discharge device is used to sterilize and cool water in a public or domestic drinking water appliance, thereby minimizing contamination of water and allowing a user to always drink cold water.

Abstract: An ultraviolet (UV) water treatment device includes a housing with an inlet and an outlet. Water flows into the housing through the inlet, is exposed to the UV light, and the treated water then flows out of the housing through the outlet. The UV light source is inserted into a quartz tube from above so that the UV lamp can be changed without draining the system. A lower access port is provided in the bottom of the housing. The lower access port includes a seat that contains the lower end of the quartz tube, and further allows a user of the system to remove debris from a broken quartz tube quickly and safely.

Abstract: A process for producing water-absorbing polymeric particles by dropletization polymerization in the gas phase, which comprises drying the polymeric particles after the polymerization in a fluidized bed, the water-absorbing polymeric particles themselves, hygiene articles comprising these water-absorbing polymeric particles and also apparatus for implementing the process.

Abstract: An improved method and apparatus for radiopharmaceutical purification, the apparatus including a chromatographic separating device, a UV-absorption detector, a radioactivity detector and a collection container having a collection inlet valve located at a collection location. Propagation times of eluent between the UV-absorption detector and the radiation detector, as well as between one or both of the detectors and the collection inlet valve, are determined. UV-absorption and radiation data from the detectors are monitored, and an appropriate time period during which the collection valve should be opened is established. Preferably, monitoring and operation of the apparatus is under control of a computer. A user interface display may be provided to enable an operator to monitor the purification process, and to intervene as required and/or appropriate.

Abstract: A device for the UV treatment of fluids flowing in a flow channel, including a plurality of cylindrical low-pressure mercury UV emitters arranged in groups in the flow channel. The longitudinal axes of the UV emitters are disposed substantially parallel to one another such that the emitters of a given group are disposed in a plane. At least one elongated sensor arrangement monitors the operating state of the emitters, and is spaced from and parallel to one of the groups of the emitters. The sensor arrangement extends essentially transverse to the longitudinal axes of the emitters of the adjacent group, and is provided with a separate UV sensor for each emitter. At least one unit connected with the sensor arrangement controls and/or regulates the emitters.

Abstract: A method for clarifying a sludge, characterized in that a raw waste water is subjected to a solid-liquid separator and then to a primary filtration device, to separate it into a solid material and a liquid material, and the resultant liquid treated material is then treated by a process comprising an ozone treatment and a special light ray treatment.

Abstract: A UV sterilizer with a double-chamber structure comprises an inner tube and an outer tube with different size, the inner tube being partly surrounded by the outer tube thereby forming an inner chamber and an outer chamber, the inner chamber is the space encircled by the inner tube and the outer chamber is the annular space encircled by the overlapped portions of the inner tube and the outer tube; a first end portion of the inner tube is located outside the outer chamber and provided with a first water port, a second end portion of the inner tube is located inside the outer chamber and provided with a second water port communicating with the outer chamber; a first end portion of the outer tube is sealingly connected with the outer wall of the inner tube, while a second end portion of the outer tube is sealed; sleeved UV lamps are arranged in the outer chamber or in both the inner chamber and the outer chamber.

Abstract: A water treating device includes a cylindrical housing having a longitudinal axis, an inlet and an outlet. Water to be treated enters the inlet, flows through the cylindrical housing and out the outlet. A plurality of elongated UV lamps are disposed in the cylindrical housing. The UV lamps extend generally in the same direction as the longitudinal axis of the cylindrical housing, but are disposed in a non-parallel relationship with the longitudinal axis of the cylindrical housing. Typically one end portion of each of the UV lamps is spaced outwardly from the longitudinal axis of the cylindrical housing. Along the length of each of the UV lamps, the distance between the longitudinal axis of the UV lamps and the longitudinal axis of the cylindrical housing varies.

Abstract: A method of purifying the used O-18 enriched cyclotron target water contaminated by the various organic compounds, the method including: supplying gaseous oxygen into the target water to be purified; irradiating UV rays having wavelengths of 254 nm and 185 nm on the target water; and releasing the gases generated during the purification oxidation process.

Abstract: Devices and corresponding methods of use are described herein which may comprise an enclosing structure defining a closed loop flow path and a system generating a plasma at a plasma site, e.g. laser produced plasma system, where the plasma site may be in fluid communication with the flow path. For the device, a gas may be disposed in the enclosing structure which may include an ion-stopping buffer gas and/or an etchant. A pump may be provided to force the gas through the closed loop flow path. One or more heat exchangers removing heat from gas flowing in the flow path may be provided. In some arrangements, a filter may be used to remove at least a portion of a target species from gas flowing in the flow path.

Abstract: The invention relates to a device for irradiating an absorbing liquid, for example waste water to be disinfected, in a throughflow. Said device comprises at least two radiator units having one cylindrical UV radiation source and three concentric sheaths. A cooling medium for carrying off heat from the UV radiation source flows in a hollow space between the inner and the center sheath. The inventive device allows to use high-performance UV radiation sources and to evenly irradiate the zones of irradiation and prevents floating particles from settling down on the radiator units.

Abstract: A sterilization device includes a shell, an ultraviolet ray lamp tube fixed with a lamp support on an upper end of the shell, an inner quartz tube around the lamp tube, an outer quartz tube around the inner quartz tube, a stainless steel tube around the outer quartz tube, an inner passage between the inner and the outer quartz tubes, an outer passage between the outer quartz tube and the stainless steel tube, and a guiding member on the lower end of the shell; the guiding member has guiding holes to guide water along a spiral path, and a water inlet on a lower portion thereof, which communicates with the guiding holes; a covering member is threadedly engaged with an outer side of the lower end of the shell; the water inlet of the guiding member extends through the covering member; the covering member has a water outlet hole.

Abstract: A system and method for controlling operation of an ultraviolet air treatment device including an ultraviolet lamp positioned to treat air within an air handling system that operates in either an on state or an off state. The method includes activating the ultraviolet lamp, and determining the operational state of the air handling system. The ultraviolet lamp is deactivated upon expiration of a predetermined time period during which the air handling system remains in the off state. The predetermined time period is preferably 30-60 minutes, preferably 40 minutes for residential applications.

Abstract: Apparatus for treating a fluid with UV light which comprises or includes apparatus to confine a flow path of the fluid to be treated between an inner boundary defining tube (“inner tube”) transparent to the UV light and an outer boundary defining tube (“outer tube”) transparent to the UV light, and a UV light emitting device interiorly of the inner tube, and at least one UV light emitting device from outside of the outer tube.

Abstract: There is described a fluid treatment system which may which may be used with radiation sources that do not require a protective sleeve—e.g., excimer radiation sources. An advantage of the present fluid system treatment is that the radiation sources may be removed from the fluid treatment zone without necessarily having to shut down the fluid treatment system, remove the fluid, break the seals which retain fluid tightness, replace/service radiation source and than reverse the steps. Instead, the present fluid treatment system allows for service/replacement of the radiation sources in the fluid treatment zone during operation of the fluid treatment system.

Abstract: A UV light source water disinfection system includes a UV light source that is driven or controlled by a ballast. Improved start-up scenarios are provided by use of a separate heating wire around the lamp or employing an inductive-coupled system to provide initial high power requirements. The UV lamp is discontinuously operated in order to extend the life of the system, save energy, and periodically dose standing water to prevent regeneration of undesired microorganisms.

Abstract: A sterilization device includes a shell, an ultraviolet ray lamp tube fixed with a lamp support on an upper end of the shell, an inner quartz tube around the lamp tube, an outer quartz tube around the inner quartz tube, a stainless steel tube around the outer quartz tube, an inner passage between the inner and the outer quartz tubes, an outer passage between the outer quartz tube and the stainless steel tube, and a guiding member on the lower end of the shell; the guiding member has guiding holes to guide water along a spiral path, and a water inlet on a lower portion thereof, which communicates with the guiding holes; a covering member is threadedly engaged with an outer side of the lower end of the shell; the water inlet of the guiding member extends through the covering member; the covering member has a water outlet hole.

Abstract: A method of and apparatus for treating liquids flowing in a thin film around a source of wave energy to directly expose the liquid to the wave energy, preferably generated in whole or part by an electrical arc between carbon electrodes. In addition to the wave energy generated by the electrical arc, energy generated by cavitation of the flowing liquid may be used in treating the liquid.

Abstract: An ultraviolet gas discharge lamp having contact pins extending downward from a base cap toward an opposing end. The lamp is placed within a conduit or duct for disinfecting air or water flowing within the conduit. The reverse contact pins that extend toward the opposing end mate with contact holes in a socket attached to the conduit through which the lamp is inserted. The lamp is only energized when the lamp is fully inserted into the duct and is de-energized upon removing the lamp from the duct. A shield protects the pins. A window may be place in the base cap so as to visually confirm that the lamp is energized and radiating. A key and mating receiver may be used on the base cap and the socket so as to prevent accidental insertion of an inappropriate lamp.

Abstract: This invention relates to a system for and method for medical treatment of respiratory diseases. The system and method are particularly effective for the treatment of and protection from diseases associated with allergic inflammation. Suitable diseases for treatment include atopic asthma, rhinitis, sinusitis, and conjunctivitis.

Abstract: A method and apparatus for disinfecting water using ultraviolet light. An apparatus with an ultraviolet light source is floated in a water container such that the ultraviolet light source is suspended beneath the water surface and is capable of emitting ultraviolet light into the surrounding water.

Abstract: An effluent treatment control system comprising a sensor that determines when a primary ultraviolet lamp disposed in a first flow path of an effluent fails. The system also includes a controller that, upon receiving a signal from the sensor, automatically turns on a backup ultraviolet lamp disposed in a second flow path of the effluent.

Abstract: The invention provides a water purification system and method for combining ultraviolet germicidal irradiation and photocatalysis in a helical reactor geometry that maximizes both the photocatalytic efficiency and the germicidal dosage of the ultraviolet irradiation in deactivation of microbes and the destruction of contaminant organic compounds.

Abstract: There is described an excimer radiation lamp assembly. The lamp assembly comprises: an elongate member having an annular cross-section to define an elongate passageway aligned with a longitudinal axis of the lamp assembly; an electrode element in electrical connection with at least a portion of the elongate passageway; and a cooling element disposed in the elongate passageway, the cooling element being electrically isolated with respect to the electrode element.

Abstract: The present invention is related to method for irradiating bulk material, particularly for treatment of food products such as grain, characterized in that in the case of a failure of said irradiation, the untreated bulk material is separated from the treated material and subsequently transported back towards the beginning of the process, in order to be treated. The invention allows to avoid re-treatment of large quantities of material, and provides a clear separation between contaminated and uncontaminated parts of the installation.

Abstract: A UV disinfection humidifier has its disinfection properties improved by recirculating the water through the UV treatment unit and/or guiding the water along the UV tube in a helical path.

Abstract: The invention provides a fluid UV sterilization system capable of automatically and stably keeping the fluid level, which includes a channel, a UV lamp module group, an electrical controller and a mounting bracket for UV lamp module(s), each UV lamp module comprising a frame and a plurality of UV lamps, the orientation of the frame and the lamps is perpendicular to or forms an angle with the general flow direction in the channel. A baffle is provided on either or both of the upstream and downstream of at least one of the UV lamp module(s), and the bottom of the baffle extends to such an extent towards the bottom of the channel that it at least reaches within the effective radiation distance of the UV lamp module group towards the fluid surface. The fluid UV sterilization system according to the present invention can control the fluid level automatically and stably, and can be used for the sterilization of domestic sewage, industrial sewage, recycled water, tap water and other kinds of water.

Abstract: Thermoplastic compositions that reflect ultraviolet light are provided herein, along with articles of manufacture and methods of fluid purification using the same. The thermoplastic compositions preferably comprise a suitable thermoplastic material and microparticles of UV reflective material, such as aluminum or stainless steel. The thermoplastic compositions are useful, for example, in forming articles of manufacture comprising a UV reflective surface that are suitable for use in a water treatment system in connection with a UV light source.

Abstract: An observable optical lamp status display system is provided for an ultraviolet irradiation lamp concealed from view. An external lamp status display panel that is within the field of view of an observer registers the operating status of each ultraviolet light irradiation lamp in an array of irradiation lamps. A separate fiberoptic lamp status display filament extends between each ultraviolet radiation lamps and the display panel. The lamp status display filament has a first end terminated in optical communication with the ultraviolet lamp and an opposite end that terminates at an optical sensor in the lamp status display panel. An observer can determine whether or not a lamp is operating simply by observing the output of the optical sensor in the display panel for each lamp operated.

Abstract: The output wavelengths of an electrodeless lamp are controlled by passing a fluid over the surface of the lamp to control its temperature. The stabilized temperature prevents thermal runaway of the lamp and stabilizes the output wavelengths of the lamp. When the fluid passing over the lamp is water, the lamp can be used for sanitary treatment of the water. The treatment can be enhanced by shaping the electrodeless lamp to provide maximally effective water treatment.

Abstract: An apparatus for purifying contaminated water by photochemical oxidation has at least a subflow of water that is directed through a flow channel in which the water is irradiated with UV electromagnetic radiation from at least one UV lamp assembly. The UV lamp assembly includes a high-pressure UV halogen lamp, which is mounted generally parallel with the flow direction in the channel. A method of irradiating the water flow with UV radiation includes using the at least one UV halogen high-pressure lamp assembly, which has energy intensive wave lengths in the range of 150 nm to 260 nm, preferably in the range of 160 nm to 220 nm, and most preferably in the range of 192 nm to 205 nm.

Abstract: An observable optical lamp status display system is provided for an ultraviolet irradiation lamp concealed from view. An external lamp status display panel that is within the field of view of an observer registers the operating status of each ultraviolet light irradiation lamp in an array of irradiation lamps. A separate fiberoptic lamp status display filament extends between each ultraviolet radiation lamps and the display panel. The lamp status display filament has a first end terminated in optical communication with the ultraviolet lamp and an opposite end that terminates in the lamp status display panel. An observer can determine whether or not a lamp is operating simply by observing whether or not light emanates from the end of the lamp status display filament in the display panel for each lamp operated.

Abstract: A method of operating a UV disinfection device provided with at least one UV emitter, including supplying the emitter with an operating voltage for a firing and continuous operation thereof, modulating the operating voltage, an operating current, or an electrical power of the UV emitter, detecting the UV radiation emitted by the emitter with a UV sensor that is adapted to temporally resolve the modulation, evaluating the signal recorded by the UV sensor, and checking whether the modulation in the signal given off by the sensor corresponds to a desired value.

Abstract: A device for exposure of a fluid to radiation comprising a tube (20) through which a fluid is caused to flow , a plurality of radiation sources (14), and a plurality of reflectors (48) to cause the radiation to be focused on the fluid.

Abstract: Systems and methods for cleaning protective sleeves in UV decontamination systems are disclosed. In one embodiment, a system for decontaminating contaminated media includes a translucent sleeve surrounding a light source, and a housing configured to receive the sleeve. A distance between an outer surface of the sleeve and an inner surface of the housing defines an annulus for flowing a contaminated fluid. The system also includes a pump for flowing the contaminated fluid through the annulus. In addition, the system in such embodiments may include a honing material in the contaminated fluid, where the flowing of the honing material against the outer surface of the sleeve removes debris aggregated on the outer surface of the translucent sleeve.

Abstract: An apparatus and method for modifying viruses and bacteria in a closed loop system that irradiates the fluid multiple times through the same channel. The apparatus consists of a cuvette, an irradiation station, a peristaltic pump, and a bottle. A plurality of power control switches controls the operation of the apparatus. This includes an on/off power switch, an on/off pump control, and a ultraviolet light control switch. A timer is provided to regulate the time period the cuvette is exposed to the ultraviolet radiation within the irradiation station. A cover is provided to enable the cuvette to be used and exposed to ultraviolet radiation within an enclosed environment.