What is Reverse Osmosis?

Reverse osmosis (RO), with its exceptional purifying efficiency, is a very cost-effective technology for the removal of the majority of impurities. RO membranes are typically thin film polyamide and are stable over a wide pH range.

RO membranes are used to remove

• Water contaminants that are less than 1 nm diameter
• Typically over 90% of ionic contamination, most organic contamination and nearly all particlate contamination

How reverse osmosis removes contaminants

During reverse osmosis, feedwater is pumped past the input side of a RO membrane under pressure (typically 4–15 bar, 60–220 psi) in cross-flow fashion. Typically 15-30% of feedwater passes through the membrane as permeate and the rest exits the membrane as a concentrate that contains most of the salts, organics, and essentially all particulates.

Advantages and Restrictions

Advantages:

• Effective removal of contaminants such as colloids, pyrogens etc
• Minimal maintenance and easy to monitor

Restrictions:

• Gases are not removed
• Pre-treatment is required to avoid contaminants damaging membrane

What water quality do you need?

Find a water purification system which meets your water quality needs.