Method and device for improving the efficiency of treating fluids applied to a uv reactor

Abstract

There is disclosed a method and UV reactor for improving the efficiency of treating fluids applied to a UV reactor (2) comprising a longitudinal flow chamber (4) having a longitudinal center axis (22), an input (6) for entry of fluid in the flow chamber (4), and an output (8) for fluid to exit the flow chamber (4), where at least the input (6) of the flow chamber (4) comprises an inlet pipe (10) followed by an inlet cone (12) which as a part of the flow chamber (4) increases the cross section of the channel from the inlet pipe (10) to a cross section of the longitudinal flow chamber (4) of UV reactor (2), said UV reactor (2) having at least one longitudinal UV-lamp (20) parallel to but not coinciding with the longitudinal center axis (22), and where the UV-lamp (20) is arranged such that fluid can flow along a flow path from the input (6) to the output (8) via the flow chamber (4), and so that fluid flowing along the flow path can be exposed to UV radiation as it flows from the input (6) to the output (8) to receive a UV dose, which is characterized in, that the fluid applied to the UV reactor (2) via the input (6) of the flow chamber (4), when passing the inlet cone (12), is applied a uniform helical flow path in an extent that all the fluid applied to the UV reactor (2), within the operation range of the current UV reactor (2), at least passes at least one UV lamp (20) at a distance to receive at least a prescribed UV dose related to the current UV reactor (2), during passing of the fluid inside the UV reactor.

1 . A method for improving the efficiency of treating fluids applied to a UV reactor comprising a longitudinal flow chamber having a longitudinal center axis, an input for entry of fluid in the flow chamber, and an output for fluid to exit the flow chamber, where at least the input of the flow chamber comprises an inlet pipe followed by an inlet cone which as a part of the flow chamber increases the cross section of the channel from the inlet pipe to a cross section of the longitudinal flow chamber of UV reactor, said UV reactor having at least one longitudinal UV-lamp parallel to but not coinciding with the longitudinal center axis, and where the UV-lamp is arranged such that fluid can flow along a flow path from the input to the output via the flow chamber , and so that fluid flowing along the flow path can be exposed to UV-radiation as it flows from the input to the output to receive a Reduction UV dose, wherein the fluid applied to the UV reactor via the input of the flow chamber, when passing the inlet cone in combination with a flow guide located in said inlet cone, is applied a uniform helical flow path in an extent that all the fluid applied to the UV reactor, within the operation range of the current UV reactor, at least passes at least one UV-lamp at a distance to receive at least a prescribed Reduction UV radiation dose related to the current UV reactor, during passing of the fluid inside the UV reactor. 
     
     
         2 . The method according to  claim 1 , wherein the prescribed Reduction UV dose is defined as the dose distribution of fluid applied to the UV reactor, having passed the UV reactor, has received at least 50% of the Average Equivalent Reduction UV dose. 
     
     
         3 . A UV reactor for treating fluids for use in practicing the method according to  claim 1 , comprising a longitudinal flow chamber having a longitudinal center axis, an input for entry of fluid in the flow chamber, and an output for fluid to exit the flow chamber, where at least the input of the flow chamber comprises an inlet pipe followed by an inlet cone which as a part of the flow chamber increases the cross section of the channel from the inlet pipe to a cross section of the flow chamber of the UV reactor, said UV reactor having at least one longitudinal UV-lamp parallel to, but not coinciding with the longitudinal center axis, and where the UV-lamp is arranged such that fluid can flow along a flow path from the input to the output via the flow chamber, and so that fluid flowing along the flow path can be exposed to UV-radiation as the fluid flows from the input to the output, wherein the inlet cone has a flow guide comprising a number of radial protruding equally curved turbine blade shaped guide plates on the reverse side relative to the inlet pipe, said curving turbine blade shaped guide plates being equally distributed over the circular surface of the cone, said guide plates extending between the inlet of the cone and the cone end. 
     
     
         4 . The UV reactor according to  claim 3 , wherein the curving turbine blade shaped guide plates is attached to the inner wall of the cone. 
     
     
         5 . The UV reactor according to  claim 3 , wherein the inlet cone has a flow guide comprising a first plate shaped ring with a number of radial protruding equally curved turbine blade shaped guide plates on the reverse side relative to the inlet pipe, where a plurality of said curving turbine blade shaped guide plates being equally distributed over the circular surface of the first plate shaped ring and the cone, said guide plates extending between the first plate shaped ring at the inlet of the cone and the cone end. 
     
     
         6 . The UV reactor according to  claim 5 , wherein the flow guide is releasably fixed in position in the cone. 
     
     
         7 . The UV reactor according to  claim 5 , wherein the flow guide at the end of the inlet cone closest to the flow chamber comprises a second support ring supporting the radial protruding equally curved, turbine blade shaped guide plates. 
     
     
         8 . The UV reactor according to  claim 5 , wherein the flow guide further comprises a third support ring located between the first plate shaped ring and the second support ring closest to the flow chamber, supporting the radial protruding equally curved turbine blade shaped guide plates. 
     
     
         9 . The UV reactor according to  claim 3 , wherein the inlet pipe comprises a flow rectifier comprising of at least one plate shaped body located in the inlet pipe. 
     
     
         10 . The UV reactor according to  claim 9 , wherein the flow rectifier comprises a first tube located in the longitudinal center axis of the inner periphery of the inlet tube, and from the outer periphery of which first tube, one or more plate shaped bodies extends to the inner wall of the inlet tube, said plate shaped bodies being equally mutually angled around the first tube, and being attached to the inner wall of the inlet tube. 
     
     
         11 . The UV reactor according to  claim 9 , wherein the first plate shaped ring is releasably attached to the flow rectifier. 
     
     
         12 . The UV reactor according to  claim 9 , wherein at least one of the plate shaped bodies of the flow rectifier comprises a protrusion at the against the first plate shaped ring adjacent side, extending in direction of the first plate shaped ring, said protrusion cooperating with a take out in the first plate shaped ring, for positioning of the flow guide relative to the flow rectifier. 
     
     
         13 . The UV reactor according to  claim 5 , wherein the first plate shaped ring of the flow guide via some of the curved turbine blade shaped guide plates are connected to a treaded bush cooperating with a treaded bolt lead through the first pipe, said treaded bolt having a head which is in abutment with the reverse end of the said first pipe. 
     
     
         14 . The UV reactor according to  claim 9 , wherein the flow rectifier consists of one or more plate shaped bodies oriented transverse to the longitudinal center axis of the UV reactor and the inlet pipe, said plates having one or more take outs for passing fluid into the UV reactor. 
     
     
         15 . The UV reactor according to  claim 3 , wherein the UV reactor comprises a plurality of UV-lamps. 
     
     
         16 . The UV-reactor according to  claim 3 , wherein the UV-lamps are arranged at different distances from the longitudinal center axis of the flow chamber. 
     
     
         17 . A method for improving the efficiency of treating fluids applied to a UV reactor comprising a longitudinal flow chamber having a longitudinal center axis, an input for entry of fluid in the flow chamber, and an output for fluid to exit the flow chamber, where at least the input of the flow chamber comprises a channel having an increasing cross section from an inlet pipe to the longitudinal flow chamber of the UV reactor, the UV reactor having at least one longitudinal UV-lamp, and where the UV-lamp is arranged such that fluid can flow along a flow path from the input to the output via the flow chamber, and so that fluid flowing along the flow path can be exposed to UV-radiation as it flows from the input to the output to receive a Reduction UV dose, wherein the fluid applied to the UV reactor via the input of the flow chamber is applied a uniform helical flow path in an extent that all the fluid applied to the UV reactor, within an operation range of the UV reactor, at least passes at least one UV-lamp at a distance to receive at least a prescribed Reduction UV radiation dose related to the UV reactor, during passing of the fluid inside the UV reactor. 
     
     
         18 . A UV reactor for treating fluids, comprising a longitudinal flow chamber having a longitudinal center axis, an input for entry of fluid in the flow chamber, and an output for fluid to exit the flow chamber, where the input of the flow chamber comprises an inlet pipe followed by an inlet channel having an increasing cross sectional area from the inlet pipe to the flow chamber of the UV reactor, the UV reactor having at least one longitudinal UV-lamp wherein the UV-lamp is arranged such that fluid can flow along a flow path from the input to the output via the flow chamber, and so that fluid flowing along the flow path can be exposed to UV-radiation as the fluid flows from the input to the output, wherein the inlet channel has a flow guide comprising a number of radial protruding equally curved turbine blade shaped guide plates on a reverse side relative to the inlet pipe, said curving turbine blade shaped guide plates being equally distributed over a surface of the channel, wherein the inlet pipe comprises a flow rectifier comprising of at least one plate-shaped body located in the inlet pipe.