reverse osmosis

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reverse osmosis

[ri′vərs äs′mō·səs]
(chemical engineering)
A technique used in desalination and waste-water treatment; pressure is applied to the surface of a saline (or waste) solution, forcing pure water to pass from the solution through a membrane (hollow fibers of cellulose acetate or nylon) that will not pass sodium or chloride ions.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The project cost is expected to be around A$3.5bn, including construction of an RO desalination process plant, seawater intake, water pipeline, and transmission line.
These projects include RO desalination plants, river water purification systems, wastewater treatment plants, water recycling systems, odour control systems, and vacuum sewerage systems.
Arafat said: "While not yet an economically viable alternative to conventionally powered RO desalination at current energy prices, these two geothermal-based schemes still show potential to be a cost-effective method of renewable desalination in the UAE."
"Production and delivery of Process Water is a key business activity for Majis, and the high-end technical expertise of the two firms will help us better serve our clients," he said, adding, "Sohar Industrial Port intake has very challenging raw water conditions, and the expertise of the two JV partners -- both leaders in the RO desalination O&M field -- will help Majis in delivering the right quality and quantity of process and potable water to its customers," he said.
The scope of work involves the construction of three 60.5 mg/d RO desalination plants at Sohar in Oman, Sila in west UAE and Al Khafji in Saudi.
LG Chem will exclusively supply about 20,000 RO desalination filters, which can produce about 250,000 tons of desalinated water a day for some 800,000 people, to the plant by the end of 2017.
Toray offers product and active engagement embracing the full scope of water utility system membrane requirements, from a small rural water treatment system on remote Indonesian islands, to the largest seawater RO desalination plants in the world, such as Magtaa in Algeria, serving 2 million people.