41
Franklin E Conger: Desalination process system and by-product recovery. Stone & Webster Engineering Corporation, April 11, 1978: US04083781 (45 worldwide citation)

A desalination process system combining reverse osmosis, evaporation and brine concentration with by-product recovery.


42
Brent R Constantz, Kasra Farsad, Miguel Fernandez: Desalination methods and systems that include carbonate compound precipitation. Calera Corporation, April 26, 2011: US07931809 (44 worldwide citation)

Desalination methods that include carbonate compound precipitation are provided. In certain embodiments, feed water is subjected to carbonate compound precipitation conditions prior to desalination. In certain embodiments, desalination waste brine is subjected to carbonate compound precipitation con ...


43
Lloyd E Williams, Robert K Mays, Joseph E Wagner III: Production of high capacity inorganic crystalline base exchange materials. J M Huber Corporation, Robert L Price, Harold H Flanders, August 9, 1977: US04041135 (44 worldwide citation)

A method is disclosed for producing inorganic crystalline base exchange materials having high total exchange capacities and specific initial exchange rates which yield well-defined residual concentrations for the elements of Group II of the Periodic Table. The method of the invention includes the co ...


44
Masahiro Kuwata: Electrodeionization apparatus. Organo Corporation, Rosenthal & Osha L, August 14, 2001: US06274019 (44 worldwide citation)

Water to be treated (feed water) flows through a series of desalination chambers filled with ion exchange resins on which impurity ions in the feed water are removed. Each desalination chamber consists of a cation-permeable membrane on one side with an anion-permeable membrane on the other side. The ...


45
David H Hopkins: Spiral-wound membrane cartridge. Desalination Systems, Fitch Even Tabin & Flannery, March 6, 1990: US04906372 (44 worldwide citation)

A reverse osmosis or ultrafiltration separation device for treating a liquid feed wherein a separation assembly is wound spirally about a central permeate-carrying tube. The assembly includes an elongated semipermeable membrane envelope which includes an interior permeate passageway and feed-passage ...


46
Theodore A Kuepper: Zero waste effluent desalination system. Marvin E Jacobs, May 28, 1996: US05520816 (43 worldwide citation)

The present invention is directed to a water desalination system that can be used in a home or commercial entity which uses a reverse osmosis or nanofilter membrane element in a unique flow configuration which promotes self cleaning of a membrane element to prevent a buildup of salts and minerals on ...


47
Robert L Somerville, Samuel F Sweat, John L Sullivan: Method of converting brines to useful products. Killworth Gottman Hagan & Schaeff, January 6, 1987: US04634533 (42 worldwide citation)

A process is provided for the recovery of one or more useful products including fertilizer, animal feed supplements, iron oxide, magnesia, salt, purified brine, and purified water from brines. The source of the brines can be oil and gas field wastes, seawater or effluent from a seawater desalination ...


48
Ross M Brown: Combination plumbing fixture for water purification system having waste bypass flow. Desalination Systems Escondido CA, Thomas D Lane, November 16, 1971: US3620241 (42 worldwide citation)

In a water purification system wherein a supply of pressurized, potable, product water is to be dispensed as required, and a small volume flow of nonpressurized byproduct waste water is to be discharged to a potentially contaminated drain, a combination plumbing fixture comprises a body with a valve ...


49
Walter Patapoff, Jim Lung Wong: Miniaturized handheld desalination field unit. November 11, 1997: US05685980 (40 worldwide citation)

A water purification unit including a water inlet having a filter adapted to remove undissolved contaminants from a raw water source. The water inlet is coupled to a water reservoir including a semi-permeable membrane adapted to remove dissolved contaminants from raw water source. The filter and the ...


50
Joseph Yaeli: Method and apparatus for processing liquid solutions of suspensions particularly useful in the desalination of saline water. Benjamin J Barish, March 24, 1992: US05098575 (40 worldwide citation)

A method and apparatus for reducing the concentration of a first substance in a first liquid by: (a) subjecting the first liquid to natural osmosis, via a first semipermeable body, with respect to an intermediate liquid, which intermediate liquid is a solution or suspension of a second substance in ...



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