Constantz Brent, Farsad Kasra, Fernandez Miguel: Desalination methods and systems that include carbonate compound precipitation. Calera Corporation, Constantz Brent, Farsad Kasra, Fernandez Miguel, FIELD Bret, January 8, 2009: WO/2009/006295 (52 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 ...

John E Tomaschke: Interfacially synthesized reverse osmosis membrane containing an amine salt and processes for preparing the same. Hydranautics Corporation, Sughrue Mion Zinn Macpeak & Seas, August 14, 1990: US04948507 (50 worldwide citation)

The present invention relates to an interfacially synthesized reverse osmosis membrane useful for the separation of fluid mixtures and solutions. In particular, the present invention relates to a polyamide water permeable membrane containing a monomeric amine salt therein, which is useful for desali ...

Bowie G Keefer: Rotary shaft driven reverse osmosis method and apparatus. September 8, 1981: US04288326 (49 worldwide citation)

Reverse osmosis, particularly for water desalination, uses semipermeable membranes which selectively permeate purified water from a feed solution pressurized by a reciprocating feed pump driven by rotating crankshaft. Pump action is assisted by depressurizing concentrate fluid within the pump cylind ...

Michael David Max: Desalination and concomitant carbon dioxide capture yielding liquid carbon dioxide. Marine Desalination Systems, Pillsbury Winthrop, November 5, 2002: US06475460 (49 worldwide citation)

Methods and apparatus for desalination of salt water (and purification of polluted water) are disclosed. Saline (or otherwise polluted) water is pumped to a desalination installation and down to the base of a desalination fractionation column, where it is mixed with hydrate-forming gas or liquid to ...

Franklin E Conger: Desalination process system and by-product recovery. Stone & Webster Engineering Corporation, February 27, 1979: US04141825 (49 worldwide citation)

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

Ahmed A ElDifrawi, Christopher F Blazek, Bernard D Yudow: Thermal gradient humidification-dehumidification desalination system. Institute of Gas Technology, Allegretti Newitt Witcoff & McAndrews, December 14, 1982: US04363703 (48 worldwide citation)

A solar energy desalination process utilizing solar radiation directly for the evaporation of salt water is described. Ambient air takes on water vapor as the air passes through an evaporative medium. It is then directed between a saline water-covered, solar absorbing surface and a solar collecting ...

Robert A Uhlinger: Desalination method and apparatus utilizing nanofiltration and reverse osmosis membranes. Fitch Even Tabin & Flannery, February 20, 2001: US06190556 (48 worldwide citation)

Apparatus and methods for producing potable water from an aqueous feed such as seawater utilizing a pressure vessel designed for operation in the range of about 250 psig to about 350 psig having reverse osmosis (RO) separation elements disposed upstream of at least one nanofiltrate separation elemen ...

Raymond A Tondreau: Combination faucet and air gap. Desalination Systems, Clement H Allen, July 6, 1976: US03967638 (48 worldwide citation)

A combination faucet and antisyphon break or air gap for dispensing purified water produced by a membrane type purification unit, has a body having a valve-controlled passage with a spout for dispensing purified water; and a pair of additional vertical passages, one for connection to the brine outpu ...

Larry A Lien: Spiral-wound membrane cartridge with ribbed and spaced carrier layer. Desalination Systems, Fitch Even Tabin & Flannery, February 20, 1990: US04902417 (46 worldwide citation)

Disclosed are spiral-wound membrane cartridge constructions for use in ultrafiltration and reverse-osmosis separation equipment, each of which include a feed layer, a membrane layer and a permeate carrier layer. By using a feed layer in the form of a channel material having a plurality of parallel r ...

Ata M Hassan: Process for desalination of saline water, especially water, having increased product yield and quality. Saline Water Conversion Corporation, Brown Martin Haller & McClain, January 21, 2003: US06508936 (46 worldwide citation)

A desalination process is disclosed which combining two or more substantially different water treatment processes in a unique manner to desalinate saline water, especially sea water, to produce a high yield of high quality fresh water, including potable water, at an energy consumption equivalent to ...

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