Reverse Osmosis Systems

reverse osmosis Animation with spiral wound membranes

The Reverse Osmosis Animation and Reverse Osmosis Diagram below compare Reverse Osmosis (RO) to other water filtration methods including Nanofiltration (NF), Ultrafiltration (UF), Microfiltration (MF), and Particle Filtration (PF).


WetterWater.com Reverse Osmosis Systems benefit from more than 30 years of spiral wound membrane development and manufacturing expertise. Reverse osmosis separation technology is used to remove dissolved impurities from water through the use of a semi-permeable spiral wound membrane.

Reverse osmosis involves the reversal of flow through a membrane from high salinity, or a concentrated solution to the high purity, or permeate, stream on the opposite side of the membrane. Your water pressure is used as the driving force for this separation. The applied pressure must be in excess of the osmotic pressure of the dissolved contaminants to allow flow across the membrane.

Spiral wound membranes are tightly packed filter material sandwiched between mesh spacers and wrapped in a small diameter tube. The membrane's operating conditions are fine-tuned to balance the flux, or the amount of water which passes through the membrane, with the specific rejection rates of Drinking Water Contaminants up to 99.8%. Spiral wound membranes are cost-effective thin-film elements used to remove salts and separate organic material, by molecular weight or particle charge. The technology is also very effective at removing bacteria, pyrogens, and organic contaminants.

Reverse Osmosis Diagram comparing other water filtration methods