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WO/1994/003254A1 |
A treatment device such as a filter device, containing a treatment bed (2) of particulate treatment medium. A fluidising unit (9) associated with the treatment medium particles, for removing the treatment medium particles from the treatm...
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WO/1994/003503A2 |
A fluoroorganic polymeric material which comprises a polymeric chain and at least one group pendent from the polymeric chain, in which the group pendent from the polymeric chain comprises at least one ion-exchange group or group converti...
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WO/1994/002417A2 |
Removal of sodium values from sodium contaminated solids, such as red mud, is achieved by contact of a slurry of such solids with a particulate cation exchanger and occurs at an enhanced rate compared with water washing or washing with a...
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WO/1994/002418A1 |
Waste water containing suspended organic material is separated into a thick slurry phase and an aqueous phase by a method wherein coarse solid matter is removed in a first treatment step. The resulting primary aqueous phase is discharged...
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WO/1994/002240A1 |
Gelled compositions for use as adsorbents and ion exchangers. The compositions include a specific extractant, such as di(2-ethylhexyl) dithiophosphoric acid or an alkali salt thereof, an organic solvent and a halopolymer modified by subs...
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WO/1994/000237A1 |
An ion exchange resin comprising an ion exchange material dispersed or distributed throughout a polyurethane matrix. The ion exchange material is typically a second polymer which has been chemically modified after dispersion or distribut...
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WO/1993/024217A1 |
A unit for treating liquid comprises a cylindrical container (1) which, in an upper chamber (6), has a set of slender tubes (8) which the liquid is forced to pass on its way from an inlet (10) to an outlet (9), so as to be subjected to a...
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WO/1993/022021A1 |
The disclosure describes a device (1) including a housing (11, 12) having an inlet (2) and an outlet (3) and defining a flow path for a liquid between the inlet (2) and the outlet (3). The flow path extends through a purification bed (17...
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WO/1993/021114A1 |
The invention relates to a device for cleaning waste water or waste slurry by means of ion exchangers held on carriers, comprising: a container; feed means for feeding the waste water for cleaning to the container; carrier feed means for...
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WO/1993/016959A1 |
In an ion-exchange system with a mixed bed resin layer of both anion exchange resin (10) and cation exchange resin (9), a layer of cation exchange resin (11), which is regenerated in the counterflow, is arranged below the mixed bed. This...
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WO/1993/013844A1 |
A controlled charge chromatography column (34) with a flow-through capacitor (10) for the purification of a fluid, which column (34) comprises an inlet (40) for the introduction of a fluid to be purified and an outlet (42) for the discha...
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WO/1993/014265A1 |
Porous materials having a range of pore sizes are given desired characteristics by selective deposition in the large pores of particulate treatment agents. Thus some characteristics are achievable by control variation of pore size distri...
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WO/1993/009860A1 |
A device, and process, for continuously separating dissolved solutes and/or suspended particles from a multicomponent fluid phase in a magnetically stabilized fluidized bed (60). The process is of the type wherein a solid resin and a liq...
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WO/1993/006924A1 |
A particle loaded, porous, fibrous compressed or fused article comprises a nonwoven fibrous polymeric web, which preferably is thermoplastic, melt-extrudable, and pressure-fusible blown microfibrous web, and sorptive particles enmeshed i...
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WO/1993/003841A1 |
An ion exchanger comprising a composite having a degree of swelling in water of 2 to 7 ml/g of resin, said composite being prepared by holding a cross-linked gel, which comprises a hydrophilic natural macromolecule having a three-dimensi...
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WO/1993/002098A1 |
A process for the separation of charged molecules such as proteins from fluids such as biological fluids using an ion exchange medium disposed on a porous membrane. Fat globules and particulates are prevented from passing through the mem...
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WO/1993/001622A1 |
A polymeric sheet, which is particularly suited for use as a separator in an electrochemical device, is formed, by graft copolymerising acrylic acid, or another vinyl monomer capable of reacting with an acid or a base to form a salt dire...
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WO/1992/011089A1 |
An electrodeionization apparatus is provided for removing ions from liquids. The apparatus is particularly well-adapted for the removal of large, heavily hydrated, highly charged or weakly ionized molecules or complexes from feed water. ...
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WO/1992/006918A1 |
Purification of aqueous hydrogen peroxide solutions using conventional ion-exchange techniques can result in the hydrogen peroxide decomposing explosively. Much safer processes are obtained by restricting the contact between the resin be...
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WO/1992/005871A1 |
The invention is based on a process for ion exchange in aqueous solutions by means of ion exchange resins (hereinafter abbreviated to 'resins') in ion exchangers in which the resins are alternately charged, regenerated, and possibly trea...
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WO/1992/005872A1 |
In order to provide long periods of operation without blinding, a dead-end filter (30) has a reversible filter cloth (105) of conical shape. Filtration is performed in one direction, and back-washing is performed in the opposite directio...
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WO/1992/004114A1 |
The invention relates to an apparatus for creating intensive contact between a liquid and a particulate solid. Said apparatus is a standing cylindrical one with a truncated cone-shaped lower part (12), a screw mixer (5) with a pitch of 1...
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WO/1992/000799A1 |
A conglomerate of controlled relative density carrying or for carrying at least one active substance for use in a fluid, a method of producing said conglomerate, a fluid bed reactor using such conglomerates, and use of said conglomerate ...
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WO/1991/010493A1 |
A composite cartridge type filter (10) of the kind utilizing a hollow cylindrical body of bonded activated carbon (12) and an interior filled with a particulate filter media bed is disposed within a housing (11) such that raw unfiltered ...
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WO/1991/008814A1 |
A fluid treatment device (10) is described which includes a cylindrical housing (12) with fluid inlet and outlet means (18, 40) at or adjacent opposite ends (16, 18). Particulate material (62) for treating fluid flowed through the device...
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WO/1991/005705A1 |
A liquid-solid contacting device which includes a plurality of chambers (101) for solid particulate material, such as zeolite for ion exchange is described. The chambers are mounted on a rotatable carriage (102) about a central axis (A)....
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WO/1991/004791A1 |
In order to remove e.g. nitrate from water with a short contact time, the water is mixed with small particles of ion-exchange resin in a tank (1), to form a suspension of a concentration of 1.25 to 5 % w/w. The particle mesh size is e.g....
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WO/1991/004792A1 |
A method and apparatus for uniformly distributing fluid across the entire cross section of a reaction medium and for compensating for volumetric changes in the reaction medium utilizes a resilient membrane which cooperates with an adjace...
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WO/1991/004089A1 |
A method and a device for filtering and processing fluids of the kind comprising a plurality of lenticular plates (1) stacked around a filtrate evacuation column (2). The fluid flows within a filter frame from the outside to the inside o...
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WO/1991/003297A1 |
In the process for adsorptive separation of materials, using a surface-type microporous adsorbent which is transported relative to the medium to separated, the medium flows through the adsorbent. In this way, the fluid to be processed is...
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WO/1991/002649A1 |
A precoat septum having a winding thereon of textured yarn produced of continuous filaments of an organic or inorganic material. The yarn is texturized by air blowing a plurality of said filaments utilizing an air jet, and drawing off th...
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WO/1991/001808A1 |
The invention relates to the use of cation exchangers of the Fractogel?R� series to eliminate LDL, fibrinogens and/or urea from body fluids, and to a process and device for eliminating the above-mentioned constituents from body fluids.
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WO/1991/001392A1 |
Remediation of soil and groundwater-bearing aquifers by the use of an ion immobilizing matrix introduced into a bulk liquid or soil either as a membrane covering or as a canister or similar suitable configuration. The ion immobilizing or...
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WO/1991/001267A1 |
The electronics industry demands that hydrogen peroxide for use therein be purified to very low levels of impurities, currently at the level of a few ppb for some impurities, or even lower. However, existing methods are either inherently...
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WO/1991/000778A1 |
The present invention relates to an ion exchange device for purifying water or improving its quality, and preferably reducing the nitrite and/or nitrate content, consisting of at least one exchange container with a basic anion exchanger ...
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WO/1990/015659A1 |
A process for removing an ionic impurity from an impure substantially non-aqueous liquid passes the impure non-aqueous liquid through at least one ion exchange compartment (10) containing an ion exchange medium (23). The ion exchange com...
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WO/1990/014311A1 |
A method of treating water with a precoated filter, wherein powdered cation- and anion-exchange resins and an ion-exchange fiber composed of an ion-exchange polymer and a reinforcing fiber are used as the precoating material, thereby dra...
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WO/1990/011829A1 |
Process and medium for treating liquids, particularly aqueous liquids, with a view to eliminating undesirable substances in particular, such as manganese and uranium and radium ions, by percolation of the liquid on said means, which is a...
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WO/1990/010643A1 |
The present invention concerns a protein structure for the transfer of cations, in particular under the influence of an electric field, characterized in that it comprises, as the transfer element, a polypeptide with an alpha + n-type hel...
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WO/1990/005114A1 |
A process for the neutralization, clarification and decolorization of organosilanes or organosilicones derived from the reaction of an organosilane or a hydropolysiloxane with an aliphatically unsaturated compound in the presence of an a...
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WO/1990/003947A1 |
A process for removing ammonia and phosphorus from a wastewater is disclosed. Wastewater is directed, preferably through fixed points (12), through a plurality of discrete beds (14) which rotate about a circular path in periodic fluid co...
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WO/1989/011321A1 |
A method and apparatus for purifying hydrofluoric acid, comprising the steps of filtering the hydrofluoric acid to remove particulates (30), passing the filtered acid through a cation exchange material (14) and an anion exchange material...
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WO/1988/010248A1 |
In a process for separating aminoacids from a mixture containing them using non-exchange resins, the mixture is passed successively over several columns arranged in series and filled respectively with an absorptive material, a first ion-...
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WO/1988/002738A1 |
A method for cleansing metal-containing solutions, particularly, but not exclusively, process water which contains such metals as mercury, cadmium and/or lead, where the metals concerned are present in water-soluble form, such as the for...
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WO/1987/007623A1 |
Permselective membranes which comprise a layer comprising polystyrene, at least a portion of which is sulfonated, and between about 10 wt. % and about 35 wt. % monovinyl arene-hydrogenated diene block copolymer, at least a portion of whi...
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WO1987007624A1 |
Bipolar membranes which exhibit high permselectivity, good mechanical strength, ability to operate at high current density, low potential drop and long-term stability. Essential to the production of bipolar membranes with these propertie...
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WO/1987/003217A1 |
Reaction column by physical or physico-chemical process in the heterogeneous phase. According to the invention, such a column operates under a pressure which is substantially equal to the height of charge in the column; its lower part (2...
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WO/1987/001965A1 |
For partially softening water, eliminating heavy metal ions from and partially softening industrial waters or eliminating organic matter suspended in waste water, a mixture of finely-round calcium hydroxide and ion-exchange sodium zeolit...
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WO/1986/007075A1 |
A solution/dispersion composition comprising a perfluorinated polymer containing sites convertible to ion exchange groups dissolved in a solvent/dispersant having: a boiling point of less than 110oC; a density of from 1.55 to 2.97 grams ...
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WO/1986/005521A1 |
A process for the production of a solid, particulate immobilised extractant, which process comprises adsorbing (a) a liquid extractant which is not homopolymerisable onto (b) a porous, solid, particulate, substrate; adsorbing (c) a monom...
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