Abstract: A method and an installation for treating a main wastewater stream flowing in a closed conduit with a flow direction. The method includes the steps of: introducing a liquid into at least one pre-treatment stream; generating a gas stream containing ozone gas; introducing the gas stream into the at least one pre-treatment stream, each with a gas injector, resulting in at least one mixed-phase stream comprising ozone laden gas and liquid; passing the at least one mixed-phase stream through at least one static mixer, resulting in a predefined gas bubble size; and injecting the at least one mixed-phase stream in the main wastewater stream perpendicular to the flow direction.

Abstract: A method and an installation for treating a main wastewater stream flowing in a closed conduit with a flow direction. The method includes the steps of: introducing a liquid into at least one pre-treatment stream; generating a gas stream containing ozone gas; introducing the gas stream into the at least one pre-treatment stream, each with a gas injector, resulting in at least one mixed-phase stream comprising ozone laden gas and liquid; passing the at least one mixed-phase stream through at least one static mixer, resulting in a predefined gas bubble size; and injecting the at least one mixed-phase stream in the main wastewater stream perpendicular to the flow direction.

Abstract: A channel for a UV irradiation device, in which the UV irradiation device is disposed in a closed channel and an inlet cone is provided in the direction of flow upstream of a UV reactor, which, as part of the wall of the channel, increases the cross section of the channel from an incoming pipeline cross section to a cross section of the reactor, in which a flow rectifier with at least one inner first guide element and at least one outer second guide element is disposed in the inlet cone, wherein the inner guide element is a substantially circular, cylindrical pipe and the outer guide element runs substantially parallel to the outer wall and is disposed at a distance from the outer wall.

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: A channel for a UV irradiation device, in which the UV irradiation device is disposed in a closed channel and an inlet cone is provided in the direction of flow upstream of a UV reactor, which, as part of the wall of the channel, increases the cross section of the channel from an incoming pipeline cross section to a cross section of the reactor, in which a flow rectifier with at least one inner first guide element and at least one outer second guide element is disposed in the inlet cone, wherein the inner guide element is a substantially circular, cylindrical pipe and the outer guide element runs substantially parallel to the outer wall and is disposed at a distance from the outer wall.

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 pressurised 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: A UV disinfection system for waste water and drinking water, including a number of UV radiators arranged in cladding tubes and a cleaning device for the cladding tubes. The cladding tubes are configured essentially symmetrically to a longitudinal axis. The cleaning device for the cladding tubes includes (a) at least one cleaning ring for each cladding tube, which surround the cladding tube, (b) at least one drive for driving the cleaning ring in the direction of the axis, wherein the at least one cleaning ring is disposed at a distance (d) from the surface of the cladding tube, (c) openings directed in the cleaning ring towards the cladding tube, and (d) a supply of pressurised liquid under high pressure into the openings so that the pressurised liquid is directed as a cleaning jet onto the surface of the cladding tube.