Abstract: The invention relates to a device for the sterilization of ballast water on ships by means of UV radiation, with a pump line by means of which ballast water can be taken up and discharged, wherein the pump line is passed through by a number of UV-transparent sheath pipes arranged one behind another in the direction of the pump line and in which UV radiators are arranged for the emission of UV radiation into the pump line and sheath pipes arranged one behind another in the circumferential direction of the pump line are offset by an angle ? in relation to one another.

Abstract: A device is proposed for the UV disinfection of liquids in an open or closed channel, having an inflow for the liquid to be disinfected, at least one UV irradiator arranged downstream of the inflow in a main flow direction and also having an outflow arranged downstream of the UV irradiator, in which a mixing device, driven by an electric motor, is arranged between the inflow and the at least one UV irradiator, which mixing device is set up for generating a cross-flow having at least one velocity component transverse to the main flow direction in order to improve mixing of the liquid.

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: The invention relates to a device for disinfecting liquids by means of ultraviolet radiation in a continuous flow method, with a reactor chamber through which flow can take place and in which a number of UV radiator units is arranged, the reactor chamber being provided with a wall, which is open at two end sides, and locally surrounded by at least one pre-chamber. Advantageous flow conditions are achieved if the at least one pre-chamber is welded to the wall at a distance from the end side so that an annular intermediate space with an internal width (r) is formed between a side of the per-chamber and the wall, and an essentially axisymmetric annular gap (d) is formed between the end side and the pre-chamber.

Abstract: The invention relates to a method for the monitoring of a plurality of at least three electrical lighting bodies of the same design, comprising a. Imposition on the plurality of lighting bodies of at least one supply signal from at least one ballast device, b. Reading out of at least one parameter for each of the individual lighting bodies in each case, c . Forming of at least one reference value from at least some of the parameters read out from the different lighting bodies, d. Comparison of the reference value with the parameter of each individual one of the lighting bodies, e. Generation of a signal for each lighting body of which the parameter exceeds a specified deviation from the reference value.

Abstract: The invention relates to a device for treating a flowing fluid, in particular water, including a housing with an inlet for supplying the fluid and an outlet for discharging the fluid, an element for generating radiation, in particular UV radiation, the radiation at least acting on a part of the flowing fluid, and a means for influencing the fluid flow within the housing wherein the means for influencing the fluid flow is configured as a module with a large number of structured metal sheets.

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: The invention relates to a device (10) for UV irradiation, each UV module (14) being designed as an immersible radiator and being in each case formed by a round UV radiator (26) which is designed as a mercury low-pressure radiator and is enclosed by a sleeve tube (28) which is transparent to UV rays, each UV module (14) being assigned an irradiation space (24) having a square cross section, the center of which is also the center (18) of the UV radiator (26) and which in each case extends from the center (18) half-way to the neighboring UV modules (14), the centers (18) of four neighboring UV modules (14) forming the corners of a square (20), the area of which corresponds to the sum of the cross-sectional area (F1) of a UV module (14) and the cross-sectional area (F2) of the irradiation space (24) of a UV module, and in that the spacing of the UV modules (14) from one another is selected in such a way that the cross-sectional area (F2) of the irradiation space (24) of each UV module (14) is no more than 10 tim

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.