Patent ID: 7683343

Claim:
Treatment system or reactor ( 1 ) comprising a housing ( 10 ) with at least one dielectric barrier discharge lamp ( 2 ) of a coaxial arrangement of an inner tube ( 21 ) having an inner wall and an outer tube ( 22 ) with a first electrode ( 20 ) realized in the form of a rod or wire located within said inner tube and spaced from said inner wall, a sleeve ( 5 ) surrounding the lamp ( 2 ) to provide a space ( 61 ) which extends between the lamp ( 2 ) and sleeve ( 5 ), wherein at least one second electrode of at least one lamp ( 2 ) is provided by an electrically conductive medium ( 6 ) within the space ( 61 ) surrounding the lamp ( 2 ) and at least one electrically conductive body ( 7 ) which is in electrical contact with the medium ( 6 ) in said space ( 61 ), wherein said inner tube ( 21 ) is adapted to receive a fluid that is not in direct contact with said electrically conductive medium ( 6 ) for cooling said rod or wire, wherein the conductivity of the electrically conductive medium ( 6 ) in said space is significantly higher than the conductivity of the medium ( 3 ) within the volume ( 31 ) surrounding the sleeve ( 5 ) and the at least one electrically conductive body ( 7 ), and wherein the volume ( 31 ) comprising a medium ( 3 ) to be treated by the radiation of the lamp ( 2 ) extends between the sleeve ( 5 ) and the housing ( 10 ).