Patent ID: 7947228

Claim:
An ultraviolet wastewater or water treatment system for disinfecting the wastewater or water by ultraviolet radiation, the system comprising: a. a series of lamp modules forming a bank, each lamp module containing a plurality of ultraviolet lamps each having a longitudinal axis, each lamp having a protective cladding, made of a material transparent to ultraviolet light, disposed thereon; b. a common drive assembly including: i. a common drive; ii. first and second actuators extending generally parallel to the longitudinal axes of the lamps; iii. first and second mobile devices operatively connected to the first and second actuators respectively and to the common drive, and wherein the first and second mobile devices are movable back and forth along the first and second actuators respectively in a direction generally parallel to the longitudinal axes of the lamps; iv. a transverse rod extending between the first and second mobile devices and extending generally perpendicular to the first and second actuators, wherein the transverse rod is operatively connected to the first and second mobile devices and is movable in a direction generally parallel to the longitudinal axes of the lamps; c. a series of elongated beams for supporting the lamp modules, each beam being disposed over one of the modules and extending generally parallel to the longitudinal axes of the lamps and extending generally perpendicular to the transverse rod; d. a plurality of carriages, each carriage being movably mounted on one of the beams and configured to be operatively connected to the transverse rod such that as the transverse rod moves, each carriage connected to the rod moves back and forth along one of the beams; e. a plurality of scrapers, each scraper carried by and extending downwardly from one of the carriages for engaging and cleaning the protective cladding of the plurality of lamps in one of the modules as the carriages move back and forth along the beams; and f. wherein the common drive is operable to move the first and second mobile devices back and forth along the first and second actuators, and wherein as the first and second mobile devices move relative to the actuators, the transverse rod and at least one of the carriages and its respective scraper moves in the same direction as the mobile devices.