reverse osmosis


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Related to reverse osmosis: electrodialysis

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.
References in periodicals archive ?
But the combination of activated sludge process with multi media filter treatment along with a Reverse Osmosis has shown to achieve 60% recovery of high quality desalinated water at lowest costs and average reduction of 91% COD and 91% [BOD.
FILMTECao reverse osmosis membranes are made from a thin-film composite polyamide material and have a high resistance to bio-fouling (i.
For instance, the carcinogen N-nitrosodimethylamine, a disinfectant by-product of wastewater treatment, breaches reverse osmosis membranes.
Two concerns that are common to reverse osmosis, ion exchange and distillation are the high cost of these systems and the disposal of the concentrated waste stream.
Therefore, to guarantee the required feed quality to the Reverse Osmosis system, a DOW Ultrafiltration SFP-2880 system was integrated upstream.
The process of reverse osmosis and its use of cleaning agents generates wastes that can include toxic chemicals, metals, and other materials that are discharged back into the sea.
In addition to the reverse osmosis system, the sanitation districts are considering charging homeowners who have self-regenerating water softeners the full cost of removing the salt their treatment systems discharge into the river, Heil said.
In mills with a high potential for impacting boiler cycles with the implementation of a reverse osmosis system, energy management will drive the decision," suggested Graham.
We are honored to be the only reverse osmosis membrane company recognized by the Artemis Project for the second year in a row," said Jeff Green, CEO of NanoH2O, Inc.
LANXESS is the only European manufacturer of reverse osmosis membrane elements.
Degremont has chosen Dow Water and Process Solutions due to the unique and innovative technology of its energy efficient advanced DOW Ultrafiltration and Reverse Osmosis membranes.
16, 2014 /PRNewswire/ -- This report analyzes the worldwide markets for Desalination Technologies in US$ Million by the following Technology Segments: Multi-Stage Flash, Multi-Effect Distillation, Reverse Osmosis, and Others.

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