Feb 26, 2012

Reverse Osmosis

in water treatment process,  RO ( Reverse Osmosis)  is one among Technic to produce pure water from certain quality source water.  Reverse Osmosis  is a modern process technology to purify water for a wide range of applications, including semiconductors, food processing, biotechnology, pharmaceuticals, power generation, seawater desalting, and municipal drinking water.

Historical development of reverse Osmosis
Research on Reverse Osmosis began in the 1950’s at the University of Florida where Reid and Breton were able to demonstrate desalination properties of cellulose acetate membrane. Loeb and Sourirajan continued the development of the RO technology with the creation of the first asymmetric cellulose acetate membrane.
Research on these promising developments spawned new and better configurations of RO elements; today the industry produces predominately spiral wound elements, or in some cases, hollow fiber elements. In the early 1980's, research in US Government Labs resulted in the first Composite PolyAmide membrane. This membrane had significantly higher permeate flow and salt rejection than cellulosic membranes. Today, with the introduction of the RO Membrans, the industry has attained a 20-times increase in flow per pressure over original cellulosic membranes, with an order of magnitude decrease in salt passage.
  General specification of good quality  Riverse Osmosis ussualy  frame made from stainless steel, Complete with 5 micron prefilter inlet pipe in high-grade material according to purpose of the Permeate Use. high-pressure pump in high-grade material according to purpose of the Permeate Use. low-pressure membranes manufactured as spiral-wound modules and fitted in a pressure pipe/tubing variable area type flow meter and pressure gauge stainless steel control and regulating valves for pressure and concentrate control
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