Abstract: A new method for removing HF and related organic fluorides from fluid streams in which the fluoride species exist as impurities and, in particular, from hydrocarbon fluid streams containing no more than about 1.0% by weight total combined fluorides. The method consists of contacting the fluid stream with an adsorbent consisting essentially of activated alumina that has been treated with a promoter material selected from the oxides and phosphates of alkali metals and alkaline earth metals, and mixtures thereof. This is preferably accomplished by providing a suitable absorber vessel charged with the adsorbent to form a fixed bed, and then conducting the fluoride-contaminated fluid through the fixed bed, either in a downflow or an upflow manner.

Abstract: An oil-conditioning filter, for use with an internal combustion engine, includes a mechanically active filter element and a chemically active filter element. The chemically active filter element has a beneficial oil conditioning agent contained in a plurality of porous additive-dispensing modules. Each of the additive-dispensing modules includes a hollow housing having a plurality of holes formed therein, and a beneficial oil additive disposed within the housing. Optionally, each additive-dispensing module may also include a porous or semi-porous polymeric membrane covering the housing, to control the rate at which the additive material diffuses outwardly therefrom.

Abstract: A modular filter system having a mechanism for performing a filter to waste step on the last cell of a multi-cell system following backwashing. A method of operating a modular filter system in which a filter to waste step is performed on the last cell of a multi-cell system after backwashing.

Abstract: A water pollution remediation system includes a plurality of decontamination modules that are self supporting and interconnectable for sequentially removing a plurality of different contaminants. The modules are designed to be independently transportable to a ship for decontaminating bilge water, in particular, after a fire when a foaming fire suppressant composition has been introduced into the bilge water. The modules may be placed on the deck of the ship, connected together and powered by the ship's hydraulic, electric and bilge pumping systems to provide comprehensive decontamination.

Abstract: A treatment and filtration device for use with a wastewater output contaminated with a chemical associated with a dry cleaning operation. An enclosed basin is capable of being filled with a volume of the wastewater for timed treatment. A first elongated module is arranged within the basin at a first location, the first module accomplishing initial filtration of the wastewater and substantial recovery of the chemical contaminant. A second elongated module is arranged within the basin at a second spaced apart location relative to the first module, a series of exterior and porous membranes interconnect the first and second modules as well as inwardly opposing wall edges of the basin proximate the modules and in order to divide the basin into first and second zones. The second module vaporizes a substantial remaining component of the chemical contaminant concurrent with discharging, from the first zone into the second zone, a further filtrated water output.

Abstract: A compact, rapid upflow deep media filter for removing suspended solids from a liquid flow, which includes: a filter casing having a liquid inlet port, a liquid outlet port, and a filter bed composed of a volume of granular filter media and located between the inlet port and the outlet port; and a screen, selectably movable between a first operative position and a second operative position within the filter casing, whereat in the first operative position the screen maintains the filter bed in a packed state so as to permit filtration therethrough of a liquid flow from the inlet port to the outlet port, and whereat in the second operative position the screen does not maintain the filter bed in a packed state such that in the presence of a liquid flow from the inlet port to the outlet port the volume of filter media expands so as to enable separation therefrom of suspended solids accumulated during filtration of the liquid flow therethrough.

Abstract: A method and device for removing pollution from polluted water, consisting of a rod on which are mounted an array of spaced magnesium plates and an array of spaced copper plates. The copper plates are in contact with the magnesium plates. Polluted water passing through the plates results in precipitates of the pollutants which can be mechanically removed.

Abstract: A pitcher or carafe housing is provided that has a raw water reservoir. A high performance filter receives raw water from a lower portion of the reservoir. The water is preferably received at or travels through a water entry tube to the back and bottom of the filter. In about 1-3 minutes the water percolates through the filter element, until it reaches a water exit port. A pouring chamber may be provided at the side of the pitcher for receiving the water from the water exit port, so that the water will continue to be treated and flow up into the pouring chamber until the water level equalizes in height in the reservoir and the pouring chamber. The filter and its housing may be placed into and removed from the inside of the raw water reservoir, or the filer housing may be side loaded. The filter media may be a polyester non-woven mat with a weight of 4-7 oz./yd.2 impregnated with carbon or zeolite and subject to compression between about 25-75% (e.g. about 50%).

Abstract: A method for purifying contaminated water involves passing contaminated water through a porous bed of steel slag. The steel slag can be used to remove various contaminants or reduce the concentration of such contaminants, such as heavy metals (for example, hexavalent chromium), chlorinated organic compounds, and certain inorganic anions. The method preferably involves placing an underground barrier of a porous bed of steel slag in a flow path of contaminated groundwater then allowing contaminated groundwater to pass through the barrier to purify the contaminated groundwater. The slag particles may be used as produced with no further grinding necessary, although the slag may be passed through a sieve or sieves to obtain a set of slag particles having a median diameter of about ⅛ inch to 1 inch, and preferably between about ¼ inch to ⅜ inch. Due to the inherent permeability of slag, no additive need be mixed with the slag.

Abstract: An improved filter device for the removal of contaminants from water and method of using same. The present invention comprises an outer housing having an inlet at one end for water to be purified and an outlet for purified water at an opposing end thereof. An inner filter is situated within and in fluid communication with the outer housing to remove contaminants from the water. Within the inner filter is an inner filter housing. Within the inner filter housing is at least one uniform region of dispersed granular copper media. A filter pad is positioned within the inner filter housing. Further, a region of granular activated carbon is positioned opposite the uniform region by the filter pad.

Abstract: A pitcher or carafe housing is provided that has a raw water reservoir. A high performance filter receives raw water from a lower portion of the reservoir. The water is preferably received at or travels through a water entry tube to the back and bottom of the filter. In about 1-3 minutes the water percolates through the filter element, until it reaches a water exit port. A pouring chamber may be provided at the side of the pitcher for receiving the water from the water exit port, so that the water will continue to be treated and flow up into the pouring chamber until the water level equalizes in height in the reservoir and the pouring chamber. The filter and its housing may be placed into and removed from the inside of the raw water reservoir, or the filer housing may be side loaded. The filter media may be a polyester non-woven mat with a weight of 4-7 oz./yd.2 impregnated with carbon or zeolite and subject to compression between about 25-75% (e.g. about 50%).

Abstract: The invention relates to a method and a device for converting a preferably weak acid ion-exchange material from the H form into the Ca form, according to which the ion-exchange material is brought into contact with an aqueous, preferably saturated, Ca(OH)2 (calcium hydroxide) solution.

Abstract: A filtering device (1), and particularly a filtering device (1), applied to a filter for home water purification is disclosed. The object of this invention is to provide a water filter of a device (1) which improves the efficiency in the water filtration accomplished by ceramic cores (10), thus eliminating the need of employing carbon filled cores or further elements for the filtration (2), and which, in addition, also enables the replacement of the element (1) without the need to replace the core (10). Such object is attained by a filtering device (1), adaptive to a filtering core (10) to be used in a water filter, the core (10) having a tubular projection (14), the device (1) comprising a recipient (3) filled with filtering elements (2), the recipient (3) being associated to a tubular projection (14) and trapping the water previously filtered by the core (10).

Abstract: Discrete non-clumping mechanically stable geometric alloyed material shapes having about 55-95% by weight thermoplastic elastomer and about 5-45% thermoplastic polymer and about 0-12% by weight filler are used for removing organic contaminates from contaminated fluids. The shapes are typically spheres having a maximum dimension of 0.125 inches, or circular discs having a thickness of less than 6 millimeters. The shapes are put in a loose form or packing, and a fluid containing organic contaminants (such as water, air, or a soil slurry) is brought into contact with the shapes so that the shapes absorb organic contaminants from the fluid, typically absorbing more than 90% of the contaminants in the first pass through. The contaminated fluid is typically passed through an ozone generator before being brought into contact with the shapes. The shapes may be foamed, e.g. utilizing about 0.1-10% by weight foaming agent.

Abstract: By regulating separation system's relative parameters, this broad and generalized separation process is disclosed to distinguish the fundament between this invention and chromatography for superior cost-effectiveness. A different mass transfer contacting method and differential set-up between two phases are applied on the disclosed apparatus to achieve purposed efficiency. This continuous separation process can be furnished as the integration of multiple partial fluidized beds or cells; operated under designated pressure level to instantaneous and simultaneous proceeding of determined mass-transfer phenomena. All zones within the process are simultaneously proceeded to isolate one product or multiple products from feed mixtures with other proceeding zones of feeding, impurity stripping, regeneration and washing. The differential mass transfer contact method is disclosed for efficient consumption of both solid phase and mobile phase.

Abstract: A filter sheet is provided which comprises a self-supporting fibrous matrix having immobilized therein particulate filter aid and particulate ion exchange resin, wherein said particulate filter aid and particulate ion exchange resin are distributed substantially uniformly throughout a cross-section of said matrix. A process for removing ionic impurities from a photoresist solution is also provided which comprises passing the photoresist solution through said filter sheet to remove ionic impurities therefrom.

Abstract: A method of water softening utilizes macrocrystalline aggregates consisting essentially of submicron crystals of aluminosilicate zeolite. The aggregates have a size of greater than 5 microns and are used in a static bed water softening device. Both regenerable and disposable water softening materials can be provided.

Abstract: An underdrain filtration system has improved perforation structure, the perforations being positioned to admit the filtrate into a plenum defined by elongated underdrain rib structures of the system. Instead of drilled or laser-cut holes or slits, the slits are formed by stamping discs from the stainless steel plate, such that the discs extend parallel to the surrounding flat area but are raised just sufficiently to define a plurality of slits under each disc, preferably two to four slits, each being an arc of slightly less than 180°, 120° or 90°, respectively. A pair of metal bridges remain to integrally connect the raised disc and the surrounding flat field. Consistent perforation width is achieved, at, for example, 0.010″ width varying by less than 0.001″ in either direction, improving consistency of pressure drop.

Abstract: The invention relates to a composite solid material fixing mineral contaminants, with a metal hexacyanoferrate basis, characterised in that it comprises a solid support coated with a pellicle of an anion-exchange polymer to which is fixed an insoluble metal hexacyanoferrate forming a thin layer. The present invention also relates to the method of preparing the said composite solid material fixing mineral contaminants with a hexacyanoferrate basis. The present invention finally relates to method of fixing, which can be carried out in a column and continuously, of at least one mineral contaminant contained in a solution, on the said composite solid material fixing mineral contaminants. The said solution is in particular a liquid or an effluent originating from the nuclear industry and installations.

Abstract: An apparatus for use in connection with removal of elements, especially exogenous antibodies, from blood or plasma flowing in an extracorporeal blood circulation system of a patient, where said apparatus comprises a container (1). This container is adapted to receive an adsorbent and comprises an inlet (15) and an outlet (16) which are adapted to be connected to an inlet conduit (19) and an outlet conduit (20), respectively, forming part of the blood circulation system. The container (1) comprises an inlet chamber (31), an adsorption chamber (32) adapted to receive the adsorbent, and an outlet chamber (33). These chambers are arranged in sequence when seen in the flow direction of the blood or the plasma through the container (1) and are separated by means of filter units (11, 12) allowing passage of the blood or the plasma. The inlet (15) and the outlet (16) are arranged adjacent one another in connection with a common movable valve means (21).