Abstract:
Ballast water treatment apparatus and methods for preventing foreign aquatic invasive species form entering marine ecological zones by translocation in ship's ballast water. The apparatus includes a housing, a filter member, and UV water treatment chambers. Methods include use of a ship's fire hydrant system or ballast water discharge port for moving ballast water from the ship's ballast tanks into the apparatus for filtration and treatment. In-port service vessels and barges as well as dock-side service vehicles are equipped with the various treatment and filtration apparatus to provided in-port or dock-side ballast water treatment services. Related methods are also provided.
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:
Method for the production of irradiation modules, in which a cladding is produced on a reactor housing by a hydroforming method in one work step, and connection parts, bottom termination and flow-guidance geometries are connected to the cladding without additional materials in a device using a laser welding process
Abstract:
Disclosed herein is a ballast water treatment device. The device includes a filtering unit filtering ballast water introduced into a ship using a filter, a vortex generating unit generating an artificial vortex in the ballast water filtered by the filtering unit, and an ultraviolet treatment unit having an ultraviolet lamp which sterilizes the ballast water discharged from the vortex generating unit using ultraviolet rays, thus preventing secondary contamination resulting from by-products, preventing a ballast tank from becoming contaminated, affording effective maintenance, and making it convenient to control. Further, an artificial vortex is formed in the ballast water when it is mixed, thus allowing a large quantity of ultraviolet rays to be radiated onto the ballast water passing through the ultraviolet treatment unit, therefore improving a sterilization effect.
Abstract:
A water treatment system that performs a water purifying treatment by use of ultraviolet radiation, comprises a front stage ultraviolet radiation device for radiating ultraviolet light in a front stage process in a water purifying treatment process, a rear stage ultraviolet radiation device for radiating ultraviolet light in a rear stage process, and a controller for controlling these ultraviolet radiation devices.
Abstract:
A device for a liquid treatment unit includes a UV generating element, arranged inside a compartment, which compartment is arranged in a liquid treatment enclosure, which enclosure is arrange with an inlet and an outlet, wherein the compartment includes UV light permeable material, and wherein the liquid to be treated surrounds the compartment. The invention is characterised in that the device includes a mechanical cleaning element arranged to and capable of cleaning outer surface of the compartment when the unit is in operation.
Abstract:
Some demonstrative embodiments of the invention may include a liquid disinfection system having built-in cleaning and deposit prevention capabilities. The system may include a conduit to carry a flowing liquid to be disinfected, an illumination source and an ultrasonic cleaning unit mounted on an external surface of the conduit.
Abstract:
There is described an excimer radiation lamp assembly. The lamp assembly comprise a radiation emitting region and at least one substantially radiation opaque region. The radiation emitting region comprises a pair of dielectric elements disposed in a substantially coaxial arrangement.
Abstract:
An ultraviolet irradiation water treatment apparatus includes a vessel having a cylindrical side portion, and plural rod-shaped ultraviolet lamps are disposed in parallel with a central axis of the side portion in the vessel. A water inlet pipe through which water flows into the vessel is provided in an outer wall of the side portion at a position in a tangential direction of an inner periphery of the side portion.
Abstract:
The present invention relates to a fluid treatment system comprising: an inlet; an outlet; and a fluid treatment zone disposed between the inlet and the outlet. The fluid treatment zone has disposed therein: (i) an elongate first radiation source assembly having a first longitudinal axis, and (ii) an elongate second radiation source assembly having a second longitudinal axis. The first longitudinal axis and the second longitudinal axis are non-parallel to each other and to a direction of fluid flow through the fluid treatment zone. The present fluid treatment system has a number of advantages including: it can treat large volumes of fluid (e.g., wastewater, drinking water or the like); it requires a relatively small “footprint”; it results in a relatively lower coefficient of drag resulting in an improved hydraulic pressure loss/gradient over the length of the fluid treatment system; and it results in relatively lower (or no) forced oscillation of the radiation sources thereby obviating or mitigating of breakage of the radiation source and/or protective sleeve (if present). Other advantages are discussed in the specification.