Abstract:
There is described a cleaning apparatus for a surface (e.g., a radiation source assembly) in a fluid treatment system. A preferred embodiment of the cleaning apparatus comprises: at least one jet element configured to generate a differential fluid current in a plane that is non-normal to a longitudinal axis of the elongate surface to cause the debris to be removed from the elongate surface. This preferred embodiment of the present cleaning apparatus is particularly advantageous for removing elongate debris from one or more radiation source assemblies disposed in the fluid treatment system. It is preferred to include in the cleaning apparatus a wiping element that is translated between a first position and a second position. As the wiping element is moved from the first position to the second position, it will tend to push the elongate debris toward a distal portion of the radiation source assembly and into the path of the differential fluid current generated by the cleaning apparatus. The differential fluid current will tend to cause the elongate debris to be lifted and/or carried away from the radiation source assembly such that the flow of fluid will carry the elongate debris past the radiation source assembly.
Abstract:
There is disclosed a radiation source assembly comprising an elongate radiation emitting outer portion having non-circular cross-sectional shape and an elongate radiation source. A radiation source module and a fluid system incorporating the radiation source assembly are also disclosed. It has been discovered that the use of a non-circular shaped sleeve or outer lamp surface reduces the stress placed on these elements in a fluid treatment system in which the radiation source assemblies are disposed transverse (e.g., orthogonal) to the direction of fluid flow through the fluid treatment zone of the system.
Abstract:
There is described a fluid treatment system particularly suited for radiation treatment of a flow of fluid (preferably water). The system comprises a fluid treatment zone for receiving a flow of fluid in contact with a surface of the fluid treatment zone. At least one elongate radiation source assembly is disposed in the fluid treatment zone. The elongate radiation source assembly has a longitudinal axis disposed transverse to a direction of fluid flow through the fluid treatment zone. The system further comprises a cleaning apparatus having at least one cleaning element in contact with an exterior surface of the at least one elongate radiation source assembly. A first motive element is provided and is operable to cause relative movement between a distal end of the at least one elongate radiation source assembly and the surface of the fluid treatment zone to define a gap therebetween. A second motive element is provided and is coupled to the cleaning system. The second motive element operable to move the cleaning system between a cleaning apparatus retracted position and a cleaning apparatus extended position. Movement of the cleaning system from the cleaning apparatus retracted position to the extended position causes debris contacting the at least one elongate radiation source assembly to be pushed into the gap. A radiation source module more use in such a fluid treatment system is also described.
Abstract:
There is described a fluid treatment system. The fluid treatment system comprises: an open channel for receiving a flow of fluid and a fluid treatment zone. The fluid treatment zone comprising a plurality of elongate radiation source assemblies orientated such that: (i) a longitudinal axis of each radiation source assembly is transverse to a direction of fluid flow through the fluid treatment zone, and (ii) an end of each radiation source assembly is disposed above a predetermined maximum height of fluid flow in the open channel. A first baffle plate is disposed upstream of the fluid treatment zone. The first baffle plate is positioned such that a distal end thereof is below the predetermined maximum height of fluid flow in the open channel. In a preferred embodiment, the present fluid treatment system provides for an area in which a cleaning system for the radiation source assemblies can be "parked" when not in use. In the so- called "parked" position, the cleaning system may be readily accessed for servicing and the like without affecting the flow of fluid through the fluid treatment zone and a fluid treatment system. This is as significant advantage of the fluid treatment system.
Abstract:
There is described a radiation source module for use in a fluid treatment system. The radiation source module comprises: a housing having an inlet, an outlet and a fluid treatment zone disposed between. The fluid treatment zone comprises a first wall surface and a second wall surface interconnected by a floor surface. The first wall surface, the second wall surface and the floor surface are configured to receive a flow of fluid through the fluid treatment zone. The radiation source module further comprises at least one radiation source assembly secured with respect to the first wall surface and the second wall surface and a module motive coupling element connected to the housing and configured to be coupled to a module motive element to permit the radiation source module to be installed in and extracted from the fluid treatment system. A fluid treatment system comprising the radiation source module is also described.
Abstract:
There is described a cleaning apparatus for a surface (e.g., a radiation source assembly) in a fluid treatment system. A preferred embodiment of the cleaning apparatus comprises: a wiping element for contact with at least a portion of the surface; at least one cutting element connected to the wiping element for cutting elongate debris in contact with the surface; and a motive element for moving the carriage between a first position and a second position. This preferred embodiment of the present cleaning apparatus is particularly advantageous for removing elongate debris from one or more radiation source assemblies disposed in the fluid treatment system. The approach utilized in this preferred embodiment of the present cleaning apparatus is to include at least one cutting element which is moved along the exterior of the radiation source assembly. The cutting element is connected to a wiping element that is translated between a first position and a second position. As the wiping element is moved from the first position to the second position, it will tend to push the elongate debris toward a distal portion of the radiation source assembly. During this translation step, it is possible that some of the debris may be cut by the cutting element. As the wiping element approaches the distal portion of the radiation source assembly, it will tend to clamp down on the elongate debris and, as the force of movement is continually applied, the cutting element will cut the elongate debris. Once the elongate debris is cut, it will more readily fall away from the radiation source assembly and this action is facilitated by a flow of fluid past the radiation source assembly.
Abstract:
There is disclosed a cleaning apparatus for a radiation source assembly in a fluid treatment system. The cleaning system comprises: a cleaning carriage comprising at least one cleaning element for contact with at least a portion of the exterior of the radiation source assembly; a rodless cylinder comprising an elongate housing having a first longitudinal axis; a slidable element disposed on an exterior surface of the elongate housing; and an elongate motive element coupled to the driving element. The slidable element is: (i) coupled to the cleaning carriage, and (ii) magnetically coupled to a driving element disposed within the elongate housing. The elongate motive element has a second longitudinal axis that is oriented in a substantially parallel, non-coaxial relationship with respect to the first longitudinal axis. There is also disclosed a fluid treatment system comprising: a fluid treatment zone for receiving a flow of fluid; at least one elongate radiation source assembly disposed in the fluid treatment zone; a cleaning apparatus having at least one cleaning element in contact with an exterior surface of the at least one elongate radiation source assembly; and a motive element coupled to the cleaning system. The elongate radiation source assembly has a longitudinal axis disposed transverse to a direction of fluid flow through the fluid treatment zone and a distal end of the at least one elongate radiation source assembly is spaced from a surface of the fluid treatment zone to define a gap. The motive element is operable to move the cleaning system between a retracted position and an extended position. Movement of the cleaning system from the retracted position to the extended position cause debris contacting the at least one elongate radiation source assembly to be pushed into the gap.
Abstract:
In one of its aspects, the present invention relates to a fluid treatment system comprising: an inlet; an outlet; a fluid treatment zone disposed between the inlet and the outlet. The fluid treatment zone: (i) comprises a first wall surface and a second wall surface opposed to the first wall surface, and (ii) having disposed therein at least one array of rows of radiation source assemblies. Each radiation source assembly has a longitudinal axis transverse to a direction of fluid flow through the fluid treatment zone and each of the first wall surface and the second wall surface comprises a first fluid deflector element and a second fluid deflector element. The first fliud deflector element projecting into the fluid treatment zone to a greater extent than the second fluid deflector element.
Abstract:
There is described a novel fluid level control system, particularly useful for controlling the level of water flowing in an open channel. The fluid level control system comprises a gate having a flap portion (3) interconnected to a lever portion (5). The flap portion is rotatable about a first pivot point (8) and comprises a first weight. The system further comprises a frame (1) which is fixed with respect to the flap portion. A linkage (11, 12, 13) interconnects the flap portion and the lever portion, and is connected to the frame at a second pivot point (10) different than the first pivot point (8). Under changing flow conditions in the channel, the present system operates by both : absolute movement of the lever portion and the flap portion, and (ii) relative movement between the lever portion and the flap portion. A fluid treatment system comprising the fluid level control system and a method for controlling the level of a flowing fluid are also described.
Abstract:
There is described a fluid treatment system particularly suited for radiation treatment of a flow of fluid (preferably water). The system comprises a fluid treatment zone for receiving a flow of fluid in contact with a surface of the fluid treatment zone. At least one elongate radiation source assembly is disposed in the fluid treatment zone. The elongate radiation source assembly has a longitudinal axis disposed transverse to a direction of fluid flow through the fluid treatment zone. The system further comprises a cleaning apparatus having at least one cleaning element in contact with an exterior surface of the at least one elongate radiation source assembly. A first motive element is provided and is operable to cause relative movement between a distal end of the at least one elongate radiation source assembly and the surface of the fluid treatment zone to define a gap therebetween. A second motive element is provided and is coupled to the cleaning system. The second motive element operable to move the cleaning system between a cleaning apparatus retracted position and a cleaning apparatus extended position. Movement of the cleaning system from the cleaning apparatus retracted position to the extended position causes debris contacting the at least one elongate radiation source assembly to be pushed into the gap. A radiation source module more use in such a fluid treatment system is also described.