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Ionics, Incorporated Patents
Assignee:
Ionics, Incorporated
Address:
Watertown, MA
No. of patents:
103
Patents:


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Patent Number Title Of Patent Date Issued
D325740 Extrusion canister April 28, 1992
D313330 Bottled water dispenser January 1, 1991
7794577 Spacer for filled cell electrodialysis September 14, 2010
A spacer element (1) is disclosed having an integral screen for use in filled cell electrodialysis. The spacer (1) has a continuous portion (2) impermeable to flow and a screen (3) which spans a centrally-located flow treatment region that contains active treatment material, such as ion
7662267 Device and method for electrodialysis February 16, 2010
An improved apparatus and operating method related thereto for deionizing water to produce substantially pure water using electric field and ion exchange materials are disclosed, including embodiments incorporating one or more of the novel features of brine and electrode streams flowing
7371326 Water treatment/remediation system May 13, 2008
A treatment system passes feed water containing a contaminant such as perchlorate through a bed of strong base anion exchange resin that has been placed in a form (e.g., in sulfate form) to selectively capture the contaminant while passing other ions (e.g., nitrate) that may also be
7264737 Control of water treatment system with low level boron detection September 4, 2007
A water treatment system and method including a membrane-based boron removal unit includes a boron analyzer for detecting the concentration of boron in a treatment stream. The boron removal unit can be a reverse osmosis (RO) or electrodeionization (EDI) treatment unit. A controller r
7094325 EDI and related stacks and method and apparatus for preparing such August 22, 2006
Apparatus and method are disclosed for introducing ion exchange or other particulates into compartments of an already-assembled electrodeionization or comparable stack by modulating a flow of slurry into the compartments with slugs of gas such as air. The air propels liquid through t
7087654 Ion exchange and electrochemical methods and devices employing one-step quaternized and polymeri August 8, 2006
The invention provides ion exchange and electrochemical methods and devices employing anion exchange polymers produced by substantially simultaneous quaternization and polymerization reactions. Anion selective polymers are produced in accordance with the invention by combining, an et
6796436 Method and apparatus for preparing pure water September 28, 2004
Water treatment systems or assemblies are normally tested after construction, at least for leaks, prior to shipping or storage. Pressure testing with a gas is hazardous, so testing with water is a standard method. After testing, the water is displaced from the system by draining or g
6723246 Filter cleaning method April 20, 2004
A method of cleaning a filter clogged with flocculating materials is provided. The method comprises determining the flocculated materials clogged on the filter and adding a dispersing agent to break up said flocculated materials to form dispersed precipitates. Then the dispersed prec
6652758 Simultaneous ammonia and fluoride treatment for wastewater November 25, 2003
An improved method of treating wastewater to remove ammonia and fluoride is provided. The method comprises the steps of chemical destruction of ammonia with an oxidizing agent, followed by treatment with calcium salts to precipitate insoluble calcium fluoride, and filtration to remove th
6645385 System and method for removal of fluoride from wastewater using single fluoride sensing electrod November 11, 2003
A system for removing fluoride from wastewater is provided. The system comprises a reaction tank for processing said wastewater by adding calcium salts, a filtration tank for removing the precipitated fluoride formed in the reaction tank, a single fluoride electrode disposed at the react
6613230 Method for simultaneous removal of arsenic and fluoride from aqueous solutions September 2, 2003
A method of removing arsenic and fluoride from aqueous solutions in the same process is provided. Specifically, the pH of the aqueous solution is adjusted to a pH in the range of about 5 to 8. A combination of calcium salts, and ferric or aluminum salts are added to form insoluble arseni
6582605 Method of treating industrial waste waters June 24, 2003
A method of treating industrial wastewaters is provided. Specifically, the wastewater includes one or more organic contaminant materials and is pre-treated prior to filtering by the following steps The pH of the wastewater is adjusted to a pH in the range of about 2 to 6, and a combi
6410672 Ion exchange and electrochemical methods and devices employing one-step quaternized and polymeri June 25, 2002
The invention provides ion exchange and electrochemical methods and devices employing anion exchange polymers produced by substantially simultaneous quaternization and polymerization reactions. Anion selective polymers are produced in accordance with the invention by combining, an ethyle
6221248 Styrene sulfonate cation exchange membrane April 24, 2001
Novel styrene sulfonate-based polymers and cation exchange membranes which are particularly suitable for use in electrodialysis of whey and improved methods for electrodialysis of whey are disclosed.
6126805 Electrodialysis including filled cell electrodialysis (electrodeionization) October 3, 2000
Improved electrodialysis (ED) stacks are disclosed having one or more components selected from the group:a) cation exchange membranes having ion exchange groups predominantly sulfonic acid groups and a minor amount of weakly acidic and/or weakly basic groups or membranes which are select
6117297 Electrodialysis apparatus September 12, 2000
An integral, monolithic frame-membrane is disclosed, such frame-membrane having a semi-permeable membrane portion and integral therewith a frame portion, the frame portion having one or more cavities, each cavity juxtaposed to the membrane portion, each cavity having at least one fluid
6009136 Damped storage rack for nuclear fuel assemblies December 28, 1999
A storage rack for storing nuclear fuel rod assemblies is provided with an array of cell housings having support elements which are preloaded against the adjacent corner of the adjacent cell housing. The support elements are fixed to the outer corner of one cell housing and have pads whi
5948230 Electrodialysis including filled cell electrodialysis (Electrodeionization) September 7, 1999
Improved electrodialysis (ED) stacks are disclosed having one or more components selected from the group:a) cation exchange membranes having ion exchange groups predominantly sulfonic acid groups and a minor amount of weakly acidic and/or weakly basic groups or membranes which are select
5891328 Membrane-frame for processes including electrodialysis April 6, 1999
An integral, monolithic frame-membrane is disclosed, such frame-membrane having a semi-permeable membrane portion and integral therewith a frame portion, the frame portion having one or more cavities, each cavity juxtaposed to the membrane portion, each cavity having at least one fluid
5814197 Electrodialysis including filled cell electrodialysis (electrodeionization) September 29, 1998
Improved electrodialysis (ED) stacks are disclosed having one or more components selected from the group:a) cation exchange membranes having ion exchange groups predominantly sulfonic acid groups and a minor amount of weakly acidic and/or weakly basic groups or membranes which are select
5702582 Multi-port multi-stream valve apparatus December 30, 1997
Apparatus for selecting connections from each of two or more inlet streams, at least two of which flow simultaneously, to one or more exit streams of a group of at least two. The apparatus has at least one rotatable first body, a first surface of which is adjacent to a first surface of a
5693227 Catalyst mediated method of interfacial polymerization on a microporous support, and polymers, f December 2, 1997
The invention pertains to the polymerization of molecules having electrophilic and nucleophilic substituents on the same or different molecules, such polymerization mediated by aminopyridine catalysts which are substantially regenerated during polymerization. The invention also perta
5679229 Electrodialysis including filled cell electrodialysis (electrodeionization) October 21, 1997
Improved electrodialysis (ED) stacks are disclosed having one or more components selected from the group:a) cation exchange membranes having ion exchange groups predominantly sulfonic acid groups and a minor amount of weakly acidic and/or weakly basic groups or membranes which are select
5679228 Electrodialysis including filled cell electrodialysis (electrodeionization) October 21, 1997
Improved electrodialysis (ED) stacks are disclosed having one or more components selected from the group:a) cation exchange membranes having ion exchange groups predominantly sulfonic acid groups and a minor amount of weakly acidic and/or weakly basic groups or membranes which are select
5662802 Solvent extraction process using water absorbing solvent at preselected temperature September 2, 1997
A method for enhancing solvent extraction of organic wastes from contaminated waste mixtures. A contaminated waste mixture is contacted with a solvent with high driving force for solvation of water, and most preferably with a solvent which is both anhydrous and which has an appreciab
5656161 Salt basket for crystallizer and method of use in zero liquid discharge industrial facilities August 12, 1997
An improved salt basket for dewatering solids, particularly salts resulting from evaporation of industrial wastewaters. The salt basket system includes a pressurizable vessel having a screen floor situated above a bottom liquid collection head, an inlet for the brine/solids slurry from
5616249 Nanofiltration apparatus and processes April 1, 1997
Improved nanofiltration apparatus and processes utilizing thin film composite asymmetric nanofiltration membranes in which the thin film semi-permeable barrier layer consists of substantially "all aliphatic" polymer(s) prepared, for example, by the interfacial polymerization of one o
5575923 Salt basket for crystallizer and method of use in zero liquid discharge industrial facilities November 19, 1996
An improved salt basket for dewatering solids, particularly salts resulting from evaporation of industrial wastewaters. The salt basket system includes a pressurizable vessel having a screen floor situated above a bottom liquid collection head, an inlet for the brine/solids slurry from
5510394 High ionic conductance ion exchange membranes and their preparation April 23, 1996
It has been discovered (Examples 4, 11 and 17) that certain desirable films will not absorb a sufficient amount of certain desirable, polymerizable monomers as to result in interpolymer membranes having desirable ion exchange properties after polymerization of any absorbed such monomers
5503729 Electrodialysis including filled cell electrodialysis (electrodeionization) April 2, 1996
Electrodialysis ("ED") stacks are disclosed having components selected from the group:a) cation exchange ("CX") membranes and/or CX granules having in at least a surface a predominant amount of sulfonate exchange groups and a minor amount of weakly ionized exchange groups;b) anion exchan
5474653 Method for controlling solid particle flow in an evaporator December 12, 1995
A method for use in an evaporator for selectively controlling the flow of solid particles within the evaporator. The method provides for the separation of solids from a liquid through the use of a separation chamber having a plurality of apertures, each of which has a critical size. In t
5472622 Salt basket for crystallizer and method of use in zero liquid discharge industrial facilities December 5, 1995
An improved salt basket for dewatering solids, particularly salts resulting from evaporation of industrial wastewaters. The salt basket system includes a pressurizable vessel having a screen floor situated above a bottom liquid collection head, an inlet for the brine/solids slurry from
5354903 Polymers prepared from concentrated solutions of N',N'methylenebisacrylamide October 11, 1994
This invention is directed to producing highly concentrated solutions of methylenebisacrylamide and thereafter blending with ionogenous acrylic monomers to produce low porosity, highly crosslinked, water insoluble polymers.
5284879 High ion exchange capacity polyelectrolytes having high crosslink densities and caustic stabilit February 8, 1994
A water or alcohol-water soluble divinyl monomer having anion exchange group(s) and a free exchangable anion is disclosed. These bifunctional divinyl monomers are capable of forming ion exchange materials (membranes and ion exchange resin beads) upon polymerization with added vinyl c
5264125 Process for manufacturing continuous supported ion selective membranes using non-polymerizable h November 23, 1993
This invention pertains to processes for manufacturing in an environmentally friendly way, continuous, supported ion exchange membranes from (I) liquids containing vinyl and related monomeric electrolytes and high boiling solvents therefor, said solvents also being swelling agents fo
5203982 Cation exchange membranes April 20, 1993
This invention is directed to highly crosslinked, substantially water insoluble, cation exchange membranes prepared from homogeneous solutions comprising at least one substantially water soluble polar solvent (including water) at least one substantially water soluble polymerizable mo
5203976 Introducing and removing ion-exchange and other particulates rom an assembled electrodeionizatio April 20, 1993
Apparatus and method for introducing ion-exchange and other particulates into certain compartments of an assembled electrodeionization stack comprising flowing a slurry of said particulates into the compartments while employing strainers for particulate retention so as to form a packed
5194189 Process for manufacturing continuous, supported polymeric sheet from polymerizable liquid starti March 16, 1993
Process for manufacturing supported, solid, polymeric sheets from: (I) liquids containing components reactable to polymers; and (II) one or more indefinitely long, foraminous substrates. A more or less continuous sandwich is formed of such substrate(s) and, faced on each side of the
5152901 Polyamine-polyamide composite nanofiltration membrane for water softening October 6, 1992
A thin film composite (TPC) ultrafilter/hyperfilter water softening membrane on a microporous substrate is produced by an interfacial polymerization reaction between (1) an aqueous phase comprising a blend of water soluble and water dispersible compounds, the former containing pipera
5147553 Selectively permeable barriers September 15, 1992
Apparatus and process for separating a fluid mixture into less permeable and more permeable fractions employing novel selectively permeable barriers comprised of a porous, emulsion treated substrate and a non-porous selectively permeable barrier layer thereon.
5145618 Process for manufacturing continuous supported ion selective membranes using non-polymerizable h September 8, 1992
Processes for manufacturing in an environmentally friendly way, continuous, supported ion exchange membranes from (I) liquids containing vinyl and related monomeric electrolytes and high boiling solvents, the solvents also being swelling agents for the membranes; and (II) an indefinitely
5141717 Carbon monitor containing anion exchange resin August 25, 1992
Apparatus for measuring the concentration of carbon compounds in water, the apparatus including a reaction zone for converting such carbon compounds to free and/or combined carbonaceous acids, a device for introducing at least a portion of the water to be analyzed as liquid or vapor into
5137925 Aliphatic anion exchange polymeric membranes having improved resistance to fouling August 11, 1992
Ion exchange membranes of the all-aliphatic structural variety, are made from plastisol films of polyvinyl chloride (PVC) and its copolymers coupled through the nitrogen atom with an aliphatic vinyl monomer containing a tertiary nitrogen atom or a polymer or copolymer of such a monom
5120416 Introducing and removing ion-exchange and other particulates from an assembled electrodeionizati June 9, 1992
Apparatus and method for introducing ion-exchange and other particulates into certain compartments of an assembled electrodeionization stack comprising flowing a slurry of said particulates into the compartments while employing strainers for particulate retention so as to form a packed
5118717 High ion exchange capacity polyelectrolytes having high crosslink densities and caustic stabilit June 2, 1992
A water or alcohol-water soluble divinyl monomer having anion exchange group(s) and a free exchangeable anion is disclosed. These bifunctional divinyl monomers are capable of forming ion exchange materials (membranes and ion exchange resin beads) upon polymerization with added vinyl
5118424 Thin film composite membranes from vinyl and related nomomers June 2, 1992
Novel thin film composite membranes are disclosed. They are prepared from vinyl and related monomers by phase transfer catalysis at the interface between one phase containing a polymerizable vinyl or related monomer and a second phase containing an entity necessary to initiate polymeriza
5102547 Anti-fouling semi-permeable membrane system April 7, 1992
Semi-permeable membrane and membrane/support assemblies and systems for microfiltration, ultrafiltration, nanofiltration, reverse osmosis, electrodialysis, electrodeionization and piezodialysis filter systems are formed of polymer membranes (14), including fine particle moieties (24) or
5089192 Asymmetric semipermeable poly(aryletherketone) membranes and method of producing same February 18, 1992
Asymmetric, semipermeable membranes cast from a solution comprised of poly(aryletherketone) dissolved in a strongly protic non-reactive acid.
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