Reverse osmosis and the advantages it offers to companies

Reverse osmosis is a technology by which it is possible to purify water and retain the possible polluting particles that it may contain, regardless of whether they are dissolved or not. But how is this process achieved? What advantages does it offer for companies?

Method - How Reverse Osmosis Works

This treatment of industrial water with reverse osmosis filtration systems is achieved by establishing a different pressure between two liquids (with different saline concentrations and separated by a semi-permeable membrane). Said pressure, called osmotic, causes the pure water to pass from the side with the lowest concentration to the one with the highest concentration, which is why these concentrations are equalized.

This phenomenon can be reversed or adjusted, depending on the needs, and serves as a desalination or demineralization method, in such a way that it gives rise to different qualities of the water, depending on the interests: water for irrigation, potable, purified, etc.

Advantages of reverse osmosis for companies

The use of this means of industrial water purification stands out for:

- It is respectful with the environment, as it does not use chemical products that are polluting or harmful.

- It is efficient (from an energy point of view), requires little energy and is also compatible with common filtration systems.

- The taste of the water is of high quality, since it eliminates contaminants and dissolved minerals and avoids bad smells, unusual colours or unpleasant taste.

- The use of the water derived from this process prevents the pipes through which it circulates from corroding or sediment accumulating in them. This is due to the removal of dissolved minerals (mentioned above) or other particles, such as metals, that can damage or clog pipes.

For all this, reverse osmosis is an excellent option for use by companies, which can improve the quality of the water in their industrial processes, in an efficient and non-polluting way.

How does reverse osmosis purify water?

Developed by NASA for its astronauts to recycle the water consumed, reverse osmosis is a high-performance water filtering system. This process can be used both on an industrial and domestic scale, it all depends on the amount of water to be filtered.

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The physical principle of reverse osmosis filtering

The osmosis occurs when two liquids separated by a semipermeable membrane and containing different concentrations (e.g. salt), are in balance. The salt concentration in the two compartments, therefore, becomes equivalent. There reverse osmosis strength when this process to be reversed: then, only the molecules of water pass through the membrane.

Operation of an osmosis system: filters and membranes

In a classic reverse osmosis unit, there are three filters and a membrane. The pre-filter and the sediment filter take care of the solid particles present in the raw water (sand, rust, etc.). The carbon filter retains everything that contributes to the bad odor or unpleasant taste of the water, due to chemicals such as chlorine or pesticides. Finally, the membrane filters everything else, nitrates, lime scale and other bacteria and viruses, to allow only the H 2 O molecules to pass through.

Reverse osmosis to purify water

This device is interesting in many fields: desalination of seawater, aquarists, oenology, horticulture, etc. Reverse Osmosis filtration systems allow among other things to reduce the hardness of the water.

RO water is pure and therefore requires remineralization for daily consumption. In addition, investing in this type of equipment can be costly. Finally, for one litre of reverse osmosis water, four to five litres of water are rejected, because the system does not retain contaminants (an advantage) and rinses the membrane constantly.