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: 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 fluid deflector element projecting into the fluid treatment zone to a greater extent than the second fluid deflector element.

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.

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.

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.

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.

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: 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 fluid deflector element projecting into the fluid treatment zone to a greater extent than the second fluid deflector element.

Abstract: A radiation source module comprising a support member, a radiation source assembly connected to the support member and a seal disposed on a first surface of the module, the seal operable to provide a substantially fluid tight seal between the first surface and a second surface which is adjacent to the first surface.

Abstract: A radiation source module comprising a support member, a radiation source assembly connected to the support member and a seal disposed on a first surface of the module, the seal operable to provide a substantially fluid tight seal between the first surface and a second surface which is adjacent to the first surface.

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.

Abstract: A radiation source module comprising a support member, a radiation source assembly connected to the support member, the radiation source assembly comprising at least one elongate radiation source having a source longitudinal axis and a module-to-surface seal disposed on a first elongate surface of the module, the first elongate surface comprising a first longitudinal axis transverse to the source longitudinal axis, the seal operable to provide a substantially fluid tight seal between the first surface and a second surface which is adjacent to the first surface. A fluid treatment system employ the radiation source module is also described.

Abstract: A radiation source module comprising a support member, a radiation source assembly connected to the support member, the radiation source assembly comprising at least one elongate radiation source having a source longitudinal axis and a module-to-surface seal disposed on a first elongate surface of the module, the first elongate surface comprising a first longitudinal axis transverse to the source longitudinal axis, the seal operable to provide a substantially fluid tight seal between the first surface and a second surface which is adjacent to the first surface. A fluid treatment system employ the radiation source module is also described.

Abstract: A radiation source module comprising a support member, a radiation source assembly connected to the support member, the radiation source assembly comprising at least one elongate radiation source having a source longitudinal axis and a module-to-surface seal disposed on a first elongate surface of the module, the first elongate surface comprising a first longitudinal axis transverse to the source longitudinal axis, the seal operable to provide a substantially fluid tight seal between the first surface and a second surface which is adjacent to the first surface. A fluid treatment system employ the radiation source module is also described.

Abstract: It is often desirable to operate ultraviolet (UV) water treatment systems at high fluid velocities; such as, when low UV doses are required, the UV transmittance of the water being treated is high, or when a high intensity radiation source is used. The operation of an open channel UV fluid treatment system at high fluid velocity causes a disproportionate amount of water to pass through the relatively low intensity region above the top lamp. This results in non-uniform UV dose delivery and poor reactor performance. In one embodiment of the invention, by elevating the inlet to the irradiation zone of the fluid treatment system with respect to the outlet, the amount of water that passes above the top lamp can be minimized, improving overall system performance. The means of elevation can consist of a step or slope in the channel, or a combination of both. Depending on the magnitude of elevation, an increase in maximum velocity of approximately two times can be obtained.

Abstract: A radiation source module comprising a support member, a radiation source assembly connected to the support member, the radiation source assembly comprising at least one elongate radiation source having a source longitudinal axis and a module-to-surface seal disposed on a first elongate surface of the module, the first elongate surface comprising a first longitudinal axis transverse to the source longitudinal axis, the seal operable to provide a substantially fluid tight seal between the first surface and a second surface which is adjacent to the first surface. A fluid treatment system employ the radiation source module is also described.

Abstract: A fluid level control system, particularly useful for controlling the level of water flowing in an open channel. The fluid level control system includes a gate having a flap portion interconnected to a lever portion. The flap portion is rotatable about a first pivot point. The system further includes a frame which is fixed with respect to the flap portion. A linkage interconnects the flap portion and the lever portion, and is connected to the frame at a second pivot point different than the first pivot point. Under changing flow conditions in the channel, the present system operates by both: (i) 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 and a method for controlling the level of a flowing fluid may also use such a fluid level control system.

Abstract: A fluid level control system, particularly useful for controlling the level of water flowing in an open channel. The fluid level control system includes a gate having a flap port on interconnected to a lever portion. The flap portion is rotatable about a first pivot point. The system further includes a frame which is fixed with respect to the flap portion. A linkage interconnects the flap portion and the lever portion, and is connected to the frame at a second pivot point different than the first pivot point. Under changing flow conditions in the channel, the present system operates by both: (i) 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 and a method for controlling the level of a flowing fluid may also use such a fluid level control system.

Abstract: A cleaning apparatus for a radiation source assembly in a fluid treatment system is described. The cleaning apparatus comprises: a carriage movable with respect to an exterior of the radiation source assembly; at least one cleaning sleeve in sliding engagement with the exterior of the radiation source assembly, the at least one cleaning sleeve being moveable with respect to the carriage; and drive means coupled to the carriage to translate the carriage whereby the at least one cleaning sleeve is translated over the exterior of the radiation source assembly. A radiation source module comprising the cleaning apparatus is also disclosed. The radiation source module is particularly useful for ultraviolet radiation of wastewater while having the advantages of in situ cleaning of the radiation source when it becomes fouled. Radiation source replacement is also facilitated.