Abstract: The invention relates to a method for operating a UV radiation source of the low-pressure gas discharge type. Said method comprises the following steps:—impingement of at least one heating coil with a heating voltage until the temperature of said coil has been increased;—impingement of the heating coil with a starting voltage in order to induce a gas discharge;—maintenance of the gas discharge by the application of a maintaining voltage and the disconnection of the heating voltage after the gas discharge has been started; in addition the following steps are preferably executed at any point in the method;—interrogation of an identification means that is connected to the UV radiation source and—if the response to the interrogation is negative, prevention or interruption of the operation,—if the response to the interrogation is positive, authorization of the operation.

Abstract: The invention relates to a method for operating a UV radiation source of the low-pressure gas discharge type. Said method comprises the following steps:—impingement of at least one heating coil with a heating voltage until the temperature of said coil has been increased;—impingement of the heating coil with a starting voltage in order to induce a gas discharge;—maintenance of the gas discharge by the application of a maintaining voltage and the disconnection of the heating voltage after the gas discharge has been started; in addition the following steps are preferably executed at any point in the method:—interrogation of an identification means that is connected to the UV radiation source and—if the response to the interrogation is negative, prevention or interruption of the operation,—if the response to the interrogation is positive, authorization of the operation.

Abstract: The invention relates to a UV radiation device for the treatment of fluids, in particular water or waste water. The device includes a radiation chamber through which the fluid can flow in one direction. The radiation chamber essentially comprises a rectangular cross-section and is bordered by two side walls as well as a base wall and a ceiling wall. The side walls and the base wall comprise a non-metallic material. Additionally, a number of lamp units are provided. The lamp units each have a radiation source and a cover tube surrounding the radiation source, and, the lamp units are essentially cylindrical in shape. The lamp units lamp units in at least one cross-direction are arranged towards the flow direction. The distance between two walls diagonally facing each other is less or equal to the discharge length of the radiation source.

Abstract: The invention relates to a device for exposing liquids to X-rays, which, seen in the direction of flow, comprises an intake chamber (16), an X-ray chamber (18) and a discharge chamber (20). The X-ray chamber has X-ray sources (36) which are either aligned in rows and/or stacked parallel to the flow (14). The device is designed as a channel with open top (10), and a containment wall (24) is provided across the direction of flow (14), between the intake chamber and the X-ray chamber. The containment wall (24) is sized so as to cover part of the channel cross-section, while the lower edge of the containment wall (24) is located at a distance of the channel base (12). The outlet opening (22) thus formed is so sized that, in case of a flow rate increase and starting from a flow rate of 1 m/sec, the liquid accumulates in front of the outlet opening (22), resulting in the liquid level in the intake chamber (16) being higher than in the X-ray chamber (18).

Abstract: The invention relates to a UV radiation device for the treatment of fluids, in particular water or waste water. The device includes a radiation chamber through which the fluid can flow in one direction. The radiation chamber essentially comprises a rectangular cross-section and is bordered by two side walls as well as a base wall and a ceiling wall. The side walls and the base wall comprise a non-metallic material. Additionally, a number of lamp units are provided. The lamp units each have a radiation source and a cover tube surrounding the radiation source, and, the lamp units are essentially cylindrical in shape. The lamp units lamp units in at least one cross-direction are arranged towards the flow direction. The distance between two walls diagonally facing each other is less or equal to the discharge length of the radiation source.

Abstract: The invention relates to a device and method for UV irradiation of treated waste water. The device comprises a plurality of UV modules, each UV module being an immersed radiator that comprises a low-pressure mercury radiator surrounded by a round sheathing tube permeable to UV rays. Each UV module is assigned to an irradiation chamber of square cross-section, the midpoint of which is also the midpoint of the UV radiator. The distance between the UV modules is selected in such a way that the cross-sectional area of the irradiation chamber of each UV module is not more than ten times larger than the cross-sectional area of the UV module itself.

Abstract: The invention relates to a device (10) for the UV irradiation of treated waste water, each UV module (14) being in the form of an immersion radiator and formed in each case from a round UV radiator (26) in the form of a low-pressure mercury radiator, which is surrounded by a round sheathing tube (28) permeable to UV rays, to each UV module (14) there being assigned an irradiation chamber (24) of square cross-section, the midpoint of which is the midpoint (18) of the UV radiator (26) at the same time and which, starting from the midpoint (18), extends in each case as far as half the distance to the adjacent UV modules (14), the distance between the UV modules (14) being selected in such a way that the cross-sectional area (F2) of the irradiation chamber (24) of each UV module (14) is not more than ten times larger than the cross-sectional area (F1) of the UV module (14) itself.

Abstract: A device for determining the level of UV-transmission through a flowing media This UV-transmission is determined by measuring and evaluating the radiation intensity of a UV-radiation source radiating through a zone of the medium. The emitting surface of the UV-radiation source partly extends into the flowing medium and partly into a reference space, or borders on the medium and the space. Two UV-sensors are directed at zones of equal irradiation intensity of the radiation source emitting surface. In this case, the one UV-sensor is arranged in the flowing medium and the other UV-sensor in the reference space. Both UV-sensors are connected to a measuring and evaluating circuit, which compares and evaluates the signals of the UV-sensors.

Abstract: Applicant has disclosed a UV-irradiation device for treating wastewater. A number of lamp units are provided having a radiation source and an encasing tube surrounding the radiation source. The lamp units are of a general, cylindrical design. A cleaning device is provided that has cleaning elements that annularly surround and encase the tubes of the lamp units. Each of the cleaning elements are displaceable in the longitudinal direction of the encasing tube. Cleaning liquid is supplied to each of the cleaning elements. In assembly, the cleaning elements have a ring which is made of a liquid-permeable material whose internal surface is in contact with the encasing tube. The cleaning liquid is fed into the liquid-permeable material.

Abstract: A UV disinfecting device for flowing fluids, having a frame (1) and a certain number of lamp units (3) with UV lamps, whereby the lamp units each have at least one electrical connection and are held by the frame (1) substantially parallel and spaced from each other. For securing the lamp units (3), clamps (10, 14) are provided, which are particularly favorable for fluid flow. Preferably, each lamp is encased in a respective casing tube (6) having one or more elastomeric end stoppers (7) and the clamps are metallic leaf springs which engage the stoppers. The electrical leads pass through the stoppers. This facilitates easy replacement of failing lamps.

Abstract: A device for treating waste water with UV-radiation is in the form of an upwardly open channel with a bottom surface and two vertical side walls, which includes a UV-irradiation chamber and a downstream outlet chamber adjoining the UV chamber. UV-radiation sources are installed in the irradiation chamber. A damming wall terminating the outlet chamber is in the form of an extension of the channel bottom raised upwardly in a slanted way at a flat angle to the direction of flow. A multitude of tubes extending perpendicular to the direction of flow of the waste water are present on the slanted damming wall. These tubes are open at both ends. The top ends of the tubes form overflow edges for the waste water. The damming wall has openings in the locations where the tubes are secured on the damming wall. These openings correspond to the cross sections of the tubes, so that the waste water flowing across the overflow edges of the tubes can drain off through the openings.

Abstract: A device for irradiating flowing liquids and/or gasses with ultraviolet (UV) light comprising a casing with in and outlet apertures and one or more UV light sources wherein the light sources are within protective tubes. The light sources are arranged such that the maximum radiation occurs along the axis of flow of the liquid and/or gasses.

Abstract: Apparatus is provided for irradiating liquid or gases by means of UV-light, consisting of a tubular body through which the medium to be irradiated flows, and at lest two UV-light sources with reflectors arranged externally to the tubular body and having parallel axes. The UV-light sources are flat radiators facing the tubular body with their narrow sides.