A purifying device comprising a purifying tank (1) having an ultraviolet radiating tube (2) installed within the middle thereof and a submersible pump (3) mounted in the upper region thereof. The purifying tank is held 5 to 100 cm below the water level by floats (7a). A partition (6) divides the region adjacent to the water level into upper and lower levels, wherein only the water on the upper side of the partition (6) is sucked in by the submersible pump (3) for purification in the purifying ta...

A method of purifying steel in a tundish, especially to remove alumina inclusions, comprises passing the steel through at least one refractory board having apertures through it and introducing inert gas into the steel at the upstream side of the foot of the board to cause a stream of bubbles to flow over the upstream side of the board. One of the boards may comprise a ceramic filter element. The boards may be non-vertical and have integral gas supply means. The apertures may taper, may have axes...

This invention relates to a method of purifying gases which are polluted by hydrocarbons and the like in an apparatus having two reactors. Each reactor contains a catalyst bed, a ceramic bed and a border layer located between the two beds. The polluted gas is forced to stream alternately through the first reactor and the second reactor (clock-wise streaming) and the second reactor and the first reactor, respectively (counter clock-wise streaming). The purification of said gas occurs when the hyd...

Apparatus for purifying the air laden with paint particles for use in a paint spray booth, comprises a vertical duct having a mixing chamber at one end. The chamber has a horizontal wall formed with one or more straight or curved slots at which a spray or washing liquid and the air stream are directed to atomize the washing liquid. An upright guide structure in the mixing chamber defines a narrow passage or passages in which the impurities are removed from the air stream by the atomized liquid.

An improved apparatus for removing magnetic material from a flowing fluid such as water by magnetic separation has a single set of electromagnets which are used with a plurality of magnetic filters for continuous magnetic separation operation alternately without obstructing the flow of the fluid being processed. A high-gradient magnetic filter arrangement which passes through a magnetic field generated by the magnets is made up of at least two magnetic filters separated by a watertight partition...

An improved apparatus for removing magnetic material from a flowing fluid such as water by magnetic separation has a single set of electromagnets which are used with a plurality of magnetic filters for continuous magnetic separation operation alternately without obstructing the flow of the fluid being processed. A high-gradient magnetic filter arrangement which passes through a magnetic field generated by the magnets is made up of at least two magnetic filters separated by a watertight partition...

A structure utilizing wave energy to purify water. The structure includes a base placed on the sea bed of a body of a breakwater placed on the base along its front edge, and a bank placed on the base along its rear edge to form a surf zone between the bank and the breaker works. The breakwater has a height relative to the base for breaking the incoming waves, and the bank has a height relative to the base sufficient to stop the advance of the broken waves.

A second purifying apparatus 2 for furthermore purifying working solution purified by a first purifying apparatus 1 is disposed downstream of the first purifying apparatus 1. A working-solution introducing pipe 42 which is capable of diffusing and discharging the working solution from the lower end thereof is disposed in substantially the central portion of the working-solution accumulating tank 40 in which the working solution is accumulated. A filter 44 for vertically sectioning the working-so...

Water purifying apparatus has a cylindrical casing rotatably supported in a tank containing contaminated water. The casing contains a helical baffle and is rotated so that contaminated water flowing in through one end of the casing is displaced to an outlet at the other end by the helical baffle and thereby brought into contact with microorganisms on the helical baffle, and the apparatus is provided with a buoyancy jacket or pontoons for buoyantly supporting the apparatus on the contaminated wat...

Methods and materials are provided for the production of essentially isomerically pure perhalogenated and partially halogenated compounds. One embodiment of the present invention provides a process for the production of essentially isomerically pure CFC-216aa. Other embodiments include processes for the production of CFC-217ba and HFC-227ea. Particular embodiments of the present invention provide separation techniques for the separation of chlorofluorocarbons from HF, from other chlorofluorocarb...