Abstract:
There is disclosed an elongate radiation source cartridge. The cartridge comprises: (i) an elongate radiation source assembly having a proximal portion and distal portion, the distal portion of the elongate radiation source assembly being unsupported, (ii) a housing coupled to the proximal portion of the elongate radiation source assembly, and (iii) a power supply disposed within the housing, the power supply in electrical communication with the elongate radiation source assembly (in certain embodiments the power supply is optional). The elongate radiation source assembly and the housing are in substantial alignment with respect to a longitudinal axis of the elongate radiation source cartridge.
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 lamp device is disclosed.The lamp device comprises a first electrical connector and a second electrical connector located at a first end portion of the lamp device. The first end portion of the lamp device is received in a receptacle of a first base portion. A first locking portion is included for secunng the first base portion to the first end portion. The present radiation lamp device obviates or mitigates the need to use adhesive and/or polymer insulation/O-rings to achieve electrical connections. Further, the present radiation lamp may be oriented in a vertical orientation without the need to use springs and/or rubber part to support the distal end of the lamp.
Abstract:
The invention relates to a radiation sensor device comprising a housing and a plurality of radiation sensor modules secured to the housing. Each radiation sensor module comprises a radiation sensor arranged to detect radiation incident on the radiation source module. Preferably, each radiation sensor module contains an entire so-called optical train to allow for calibration of the detector (e.g., photodiodes, photoresistors and the like) without disassembling all the components of the module.
Abstract:
A radiation sensor device comprising a body portion having an entrance through which radiation may enter the body portion, a radiation detector and an optical filter interposed between the entrance and the radiation detector. The radiation detector is capable of detecting radiation having at least one wavelength in the range of from about 125 nm to about 1100 nm, and comprises: (i) a silicon-containing material comprising an n-doped layer disposed on a pair of p-doped layers, and (ii) a passivation layer disposed on a radiation impingement surface of the siliconcontaining material, the passivation layer comprising nitrided silicon dioxide, a metal silicide and mixtures thereof. The optical filter has: (i) an optical transmittance of at least about 40% at a wavelength in the range of from about 175 nm to about 300 nm, and (ii) an optical transmittance of no greater than about 5% at a wavelength greater than about 350 nm.
Abstract:
A fluid treatment system (100) for placement in a flanged pipe fluid conveyance system. The fluid treatment system (100) comprises a flanged ductile iron pipe fitting (105). The ductile iron pipe fitting (105) comprises: a first flanged opening (110) and a second flanged opening (120) in substantial alignment to define a flow axis aligned substantially parallel to a direction of fluid flow (A) through the first opening (110) and the second opening (120); and a third flanged opening (130) comprising a first cover element (155). The first cover element (155) has connected thereto at least one radiation source (150) assembly comprising at least one elongate radiation source having a longitudinal axis substantially transverse to the flow axis. In its preferred form, the fluid treatment system may be advantageously utilized to treat fluid such as water, e.g., municipal waste water, municipal drinking water and the like. The fluid treatment system is particularly advantageous since it utilizes a standard ductile iron pipe fitting (105) and thus, can be readily "spliced" into existing piping systems. This facilitates installation of the system and also allows for a significant lowering of manufacturing costs of the system.
Abstract:
A fluid treatment device comprising a housing for receiving a flow of fluid, the housing comprising a fluid inlet, a fluid outlet, a fluid treatment zone disposed between the fluid inlet and the fluid outlet, and at least one radiation source module disposed in the fluid treatment zone, the at least one radiation source module comprising a radiation source sealably connected to a leg, the leg sealably mounted to the housing, the radiation source being disposed substantially parallel to the flow of fluid. A method of treating a fluid in a housing comprising a fluid inlet, a fluid outlet, a fluid treatment zone disposed between the fluid inlet and the fluid outlet, the fluid treatment zone having at least one radiation source disposed therein is also described. The method comprises the steps of: (i) providing a flow of the fluid to the fluid inlet; (ii) feeding the flow of fluid from the fluid inlet to the fluid treatment zone in a manner substantially parallel to the at least one radiation source; (iii) irradiating the flow of fluid in the fluid treatment zone; and (iv) feeding the flow of fluid to the fluid outlet. During the method, the flow of fluid through the fluid inlet, the fluid outlet and the fluid treatment zone is substantially collinear. The fluid treatment device and method are ideally suited (but not limited) to inactivate microorganisms present in water.
Abstract:
A process for treating a fluid comprising at least one chemical contaminant. The process comprises the steps of: (i) contacting the fluid with a particulate adsorbent material; (ii) allowing the adsorbent material to adsorb the chemical contaminant to produce a substantially purified fluid and a contaminant-carrying adsorbent material; (iii) separating the contaminant-carrying adsorbent material from the substantially purified fluid; (iv) contacting the contaminant-carrying adsorbent material with an aqueous slurry of a photocatalytic metal oxide powder in the presence of an electron acceptor and electromagnetic radiation in at least one of ultraviolet and visible regions; (v) allowing the contaminant to decompose to form a product which dissociates from the contaminant-carrying adsorbent to provide a regenerated adsorbent material, the aqueous slurry and the product; (vi) separating and recycling the regenerated adsorbent material to step (i); and (vii) recycling the aqueous slurry to step (iv). The process may be used to remove contaminants from and thereby purify fluids such as water, off-gases from air stripping processes and chimney gases.
Abstract:
There is disclosed a fluid treatment device comprising a housing for receiving a flow of fluid. The housing comprises a fluid inlet, a fluid outlet, a closed fluid treatment zone disposed between the fluid inlet and the fluid outlet. Disposed in the housing is at least one elongate radiation source assembly having a longitudinal axis disposed in the fluid treatment zone substantially parallel to a direction of the flow of fluid through the housing. The radiation source assembly comprises an elongate radiation source disposed in a protective sleeve to define a substantially annular passageway. The protective sleeve has opposed open ends configured to permit heat to exit the passageway and the housing through at least one of the opposed open ends of the sleeve.
Abstract:
The present invention relates to an ultraviolet radiation lamp. The lamp comprises: (i) a substantially sealed cavity comprising a mercury-containing material; and (ii) a heating unit disposed exteriorly with respect to the cavity. The heating unit is disposed in contact with a first portion of the cavity comprising the mercury- containing material. The heating unit has adjustable heat output.