41
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 ...


42
Robert L Somerville, Samuel F Sweat, John L Sullivan: Method of converting brines to useful products. Killworth Gottman Hagan & Schaeff, January 6, 1987: US04634533 (41 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 ...


43
Theodore A Kuepper: Zero waste effluent desalination system. Marvin E Jacobs, May 28, 1996: US05520816 (41 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 ...


44
Donald T Bray, David H Hopkins: Spiral wound membrane. Desalination Systems, Fitch Even Tabin & Flannery, June 27, 1989: US04842736 (41 worldwide citation)

A spiral wound membrane cartridge for use in separating a first component from a feed fluid mixture of the first component and the second component. The cartridge includes a permeate collection tube and at least one permeate carrier leaf extending outwardly from the tube. The cartridge further inclu ...


45
Alvin Kobashikawa, Yu Si Fok: Wave energy conversion device for desalination, ETC. Leighton K Chong, April 4, 2006: US07023104 (40 worldwide citation)

An impulse-type “wave motor” employs a seabed-mounted or supported structure mounting a wave energy absorbing panel on a hinged lever arm for reciprocation motion to obtain optimal absorption of wave energy from wave motion in the sea. For deepwater wavelengths of L, the panel is optimally positione ...


46
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 ...


47
Bresler Sidney A: Desalination process. Bresler and Associates, February 1, 1972: US3639231 (40 worldwide citation)

Brackish water is desalinated by contacting it with one or more ion exchange resins followed by reverse osmosis. Brine rejected in reverse osmosis treatment can be used to regenerate a used ion exchange resin.


48
Robert A Uhlinger: Means for desalination of water through reverse osmosis. Sand and Sea, Duane C Bowen, July 27, 1982: US04341629 (39 worldwide citation)

Water from a source is fed to a reverse osmosis unit having a membrane which divides the stream into a first permeate product and a first concentrate. The first permeate product is stored in a tank until a selected quantity is collected and then the source is disconnected from the pump which next de ...


49
Raymond A Tondreau, Donald T Bray: Water storage control for reverse osmosis system. Desalination Systems, Clement H Allen, February 26, 1980: US04190537 (39 worldwide citation)

A reverse osmosis system employs a tank for storing permeate under a pressure which is a portion of the pressure of feed water introduced into a pressure resistant container housing a semipermeable membrane cartridge. Control means such as an automatic valve, preferably of the double diaphragm type, ...


50
Wilmot H McCutchen: Rotary vacuum distillation and desalination apparatus. July 9, 1996: US05534118 (38 worldwide citation)

A controlled bubble of cavitation is formed within the distilland by opposed centrifugal and centripetal forces in the plane of an afferent mesial passage. Thus a distilland surface forms around the axis of rotation, and saturated vapor is continuously stripped from this distilland surface by the wo ...



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