Waterguide - Reverse osmosis

What is the principle of osmosis or reverse osmosis?

Osmosis is the natural process whereby water is separated from a solution by a semi-permeable membrane and diffuses though this membrane. The resulting osmotic pressure acts as the driving force, balancing out the concentration of the water molecules until there is an equilibrium on both sides.

This process is reversible if the pressure exerted on the solution causes the water molecules from the solution to be “pushed” though the membrane.

Where can you observe osmosis occurring in nature?

A very good example of osmosis or osmotic pressure is when cherries get tears in their skin following rain and then burst. The skin functions as a semi-permeable membrane, the rainwater diffuses into the inside of the cherry, fills it up and ultimately causes it to burst.

How is reverse osmosis implemented using technology?

When using technology to implement reverse osmosis, artificial semi-permeable membranes are coiled and inserted into a pressure vessel.

Advantages of Herco’s RO units

The range of Herco reverse osmosis units is guaranteed to feature a suitable solution for any application: We have a large selection of manufacturer-independent membranes and various combinable solutions with state-of-the-art control technology, all of which are particularly water-conserving and energy-efficient – they generate water with a very low conductivity. The choice of pre-treatment options (filtration, softening, dosing) depends on the available raw water and the required quality of the permeate.

Herco experts would be more than happy to advise you and help you in configuring your unit.

The figure above shows the difference between osmosis and reverse osmosis.

On our download page you will find a product overview.

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