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| Number | Title | Issue Date |
| 7399416 | Reactive filtration In one embodiment, a reactive filtration method includes continuously regenerating a reactive filter media while simultaneously filtering contaminants from fluid flowing through the filter media. In one embodiment, regenerating the reactive filter media comprises mi... | 07/15/2008 |
| 7368059 | Method for preferentially removing monovalent cations from contaminated water A process and apparatus for continuously removing ions from solution in proportion to their prevalence in solution using an ion exchange media. The process comprises: (a) mixing fresh or regenerated ion exchange media and a feed solution containing diverse ions; (b)... | 05/06/2008 |
| 7361281 | High efficiency ion exchange system and method for removing chromium from water The disclosed invention is a fixed bed ion exchange water purification system. It employs a combination of electronically controlled process steps and specific systems configurations to duplicate the effects of moving resin beds from one operating position to anothe... | 04/22/2008 |
| 7341661 | Clarification and sorptive-filtration system for the capture of constituents and particulate matter in liquids and gases A sorptive-filtration system for removing at least one of negatively or positively charged ions, complexes or particulates from an aqueous stream. The system includes a) flow formed substantially from at least one of rainfall-runoff or snowmelt-runoff; b) a filter c... | 03/11/2008 |
| 7332080 | Apparatus for salt free water softening A water softening system and process for softening water on an as needed basis is disclosed. The system and process softens water without the addition of a substitute metal exchange cation. ... | 02/19/2008 |
| 7326348 | Method for removal and destruction of ammonia from an aqueous medium Methods and apparatuses are provided for the removal and destruction of ammonia from an aqueous medium. The methods and apparatuses include the removal of ammonia from an aqueous medium by contact with either natural or synthetic zeolite. The spent zeolite is regene... | 02/05/2008 |
| 7288200 | System for injecting a by-pass fluid in a separation method in a simulated moving bed Device and process for separating at least one compound from a mixture in a simulated moving bed, comprising: an enclosure comprising several absorbent beds, two adsorbent beds being separated by a fluid distribution and extraction... | 10/30/2007 |
| 7273555 | Process for continuous ion exchange A process for continuous countercurrent ion exchange comprises piping a contaminated feed stream into a closed loop ion exchange contactor. The contactor is an ion exchange bed that has three or more reaction segments. The segments are comprised of at least an adsor... | 09/25/2007 |
| 7252697 | Methods for making controlled-release ammonium phosphate fertilizer A method for making controlled-release ammonium phosphate fertilizer has the following acts of: cracking, pulverizing, blending, aging, drying, and adding release-controlling materials into an ammonium phosphate slurry during preparing processes or adding release-co... | 08/07/2007 |
| 7191797 | Rotary distribution apparatus A rotary distribution apparatus includes a fixed inner distribution member (12) with inner conduit zone; a rotatable distribution member (16) rotatable about the fixed inner distribution member; a plurality of fluid distribution chambers (18) lo... | 03/20/2007 |
| 7169618 | Magnetic particles and methods of producing coated magnetic particles An improved method for separating materials is provided, using colloidal, magnetizable aggregates, optionally silanized, and coated with a one or more layers of novel polysaccharide derivatives. Materials separated by the aggregates of the invention include inorgani... | 01/30/2007 |
| 7166460 | Product removal process for use in a biofermentation system This invention relates to a bioprocess engineering solution for a product removal process for use in a biofermentation. The invention discloses a process for withdrawing an aliquot of broth from a biofermentation vessel during at least a portion of the biofermentati... | 01/23/2007 |
| 7153435 | Magnetic process for removing heavy metals from water employing magnetites A process for removing heavy metals from water is provided. The process includes the steps of introducing magnetite to a quantity of water containing heavy metal. The magnetite is mixed with the water such that at least a portion of, and preferably the majority of, ... | 12/26/2006 |
| 7108784 | Apparatus for removal and destruction of ammonia from an aqueous medium Methods and apparatuses are provided for the removal and destruction of ammonia from an aqueous medium. The methods and apparatuses include the removal of ammonia from an aqueous medium by contact with either natural or synthetic zeolite. The spent zeolite is re-gen... | 09/19/2006 |
| 7105087 | Hexa-valent chromium removal from aqueous media using ferrous-form zeolite materials Systems and methods are provided for the removal and disposal of chromium form an aqueous medium. The systems and methods include the removal of chromium from a source by contact with either natural or synthetic zeolite that has been modified with a ferrous ion or o... | 09/12/2006 |
| 7094325 | EDI and related stacks and method and apparatus for preparing such 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 propel... | 08/22/2006 |
| 7045057 | Preparation of homogeneously loaded ion exchangers A process for preparing an ion-exchangeable media within a moving-bed or simulated moving-bed device, which can create a true or simulated media flow, comprising the steps of packing the bed with ion-exchangeable media and passing a solution, containing a mixture of... | 05/16/2006 |
| 7041223 | High efficiency ion exchanges system for removing contaminants from water The disclosed invention is a fixed bed ion exchange water purification system. It employs a combination of electronically controlled process steps and specific systems configurations to duplicate the effects of moving resin beds from one operation position to anothe... | 05/09/2006 |
| 7022229 | Adsorption separation system An apparatus is presented for separating chemicals using adsorption separation methods. The apparatus uses a plurality of adsorption units holding adsorbent, where the adsorption units are serially connected and are moved to shift the relative position of the feeds ... | 04/04/2006 |
| 6979402 | Miniature actual moving bed assembly An apparatus is presented for separating chemicals using adsorption separation methods. The apparatus uses a plurality of adsorption units holding adsorbent, where the adsorption units positioned in a cylindrical spool, are serially connected and the spool is rotate... | 12/27/2005 |
| 6972091 | Ion exchange resin plant An ion exchange resin plant for the demineralizing or softening water with an arrangement that allows the plant to operate continuously. The plant tank is divided into to two separate compartments that work simultaneously. One compartment effects water demineralizat... | 12/06/2005 |
| 6908560 | Zero brine, zero rinse water process for treatment of contaminated drinking water for removal of arsenic An ion exchange process for removing arsenic from drinking water is disclosed which uses a mixed ion regenerant and generates minimal levels of waste. ... | 06/21/2005 |
| 6887386 | Method for recovering ionic products A continuous Liquid-Solids Circulating Fluidized Bed (LSCFB) preferably for use as an ion exchanger consists of two fluidized bed columns, a fluidized bed adsorber (downer) operating in conventional fluidized bed mode for adsorption of ions of interest and a fluidiz... | 05/03/2005 |
| 6802970 | Fluid treating device A fluid-treating device containing a distributing device having a revolving disc in a stationary housing, and a motor for rotating the disc. Feed and discharge pipes are connected to an end wall of the housing and open onto the revolving disc. Stationary vessels are... | 10/12/2004 |
| 6716344 | Liquid-solids circulating fluidized bed A continuous Liquid-Solids Circulating Fluidized Bed (LSCFB) preferably for use as an ion exchanger consists of two fluidized bed columns, a fluidized bed adsorber (downer) operating in conventional fluidized bed mode for adsorption of ions of interest and a fluidiz... | 04/06/2004 |
| 6706195 | High efficiency ion exchange system for removing arsenic from water The disclosed invention is a fixed bed ion exchange system from removing arsenic from water. It employs a combination of electronically controlled process steps and specific systems configurations to duplicate the effects of moving resin beds from one operating posi... | 03/16/2004 |
| 6676839 | Process for continuous chemical separation A process for removing a solute from a fluid process stream containing said solute and containing a solvent. The process comprises (a) continuously contacting the process stream with a portion of a rotating mass of sorbent material at a temperature that a... | 01/13/2004 |
| 6669849 | Water treatment process The present invention relates to water treatment, in particular to a process for the removal of dissolved organic carbon from water. The process includes the following steps, adding an ion-exchange resin to water containing a contaminant such as dissolved... | 12/30/2003 |
| 6641737 | Vertical filter A liquid filtering apparatus is placed in a vessel having a bed of filtration material and an intake for introducing unfiltered liquid, that includes a washbox, an airlifting tube extending from the washbox and including an intake end and means for introd... | 11/04/2003 |
| 6576137 | Differential and continuous separation process with controlled paramenters for solids and liquids 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 ... | 06/10/2003 |
| 6563010 | Adsorbent bed loading and regeneration The process for removing impurities from a liquid by contact with a solid adsorbent using parallel contact adsorbent beds such that when one bed is contacting the liquid the parallel bed is being regenerated by contact with heated inert gas, wherein durin... | 05/13/2003 |
| 6340427 | Solution purification method for electrolyte A solution purification method for an electrolyte comprising the steps of dividing a chelate resin having a volume corresponding to the quantity of Sb and Bi to be adsorbed into a plurality of columns, bringing an electrolyte into contact with the chelate... | 01/22/2002 |
| 6334956 | Adsorption or desorption of dissolved constituents in liquids and apparatus therefor To adsorb, on solid adsorbent particles, constituents dissolved in liquid, or to desorb (extract), from solid desorbent particles, soluble constituents in liquid, in a container a packed bed formed from granular material is mixed with adsorbent particles ... | 01/01/2002 |
| 6319413 | Method of filtering liquid using a vertical filter Method of filtering liquid using a vertical filter, which includes media, an airlift, a washbox, a reject box, a filtrate chamber, and an effluent box. The method of filtration and media cleaning is automatic. The filtered liquid is collected by multi-car... | 11/20/2001 |
| 6200364 | Process for eluting precious metals from activated carbon A process is disclosed for the recovery of gold and/or silver values from activated carbon, wherein they are adsorbed as cyanide complexes. The process uses an eluant containing sugar. The process allows the eluant to pass through fresh carbon twice, ther... | 03/13/2001 |
| 6059974 | Water treatment process An improved water softening process is provided which also reduces anion content. A first stream of water is passed through an anion-exchange unit to remove undesirable anions and raise the pH. The first stream of water is then provided to reactor/clarifi... | 05/09/2000 |
| 5980753 | Process for recovering volatile acids The present invention provides a process for recovering a volatile acid charaterized by bringing a waste liquid containing the volatile acid into contact with an amine having a boiling point of at least 50° C. to thereby cause the amine to tonically adso... | 11/09/1999 |
| 5944905 | Method and apparatus for performing a continuous reaction with at least one liquid phase and at least one solid catalyst in a pulsed column A method and an apparatus for performing a continuous reaction with at least one liquid reaction phase incorporating at least one starting compound in the presence of at least one solid-phase catalyst, wherein the phases to be contacted are circulated thr... | 08/31/1999 |
| 5855790 | Magnetic particles, a method for the preparation thereof and their use in the purification of solutions Magnetic particles which comprise a core of a magnetic material surrounded by a mixture of a fibrous material and a solid binding agent. The particles may be embedded in a polymer resin which incorporates sites, which are selective for particular ions, to... | 01/05/1999 |
| 5772891 | Water treating method for treating waste water by using ion exchange resin A water treating apparatus is provided which can treat waste water for use as raw water in an ultrapure water producing system without addition of various kinds of chemicals. The apparatus includes a first water tank for receiving acid waste water, a seco... | 06/30/1998 |
