Reverse osmosis: the main process to improve water quality

Most people, even if only a few times in their lives, have heard about the so-called osmosis process, a natural phenomenon, of vital importance for animals and plants, which allows to maintain and regulate the cell pressure thanks to the membrane that it constitutes them, which is semipermeable, that is to say permeable to water but not to certain solutes such as dissolved salts, sugars and proteins.


The pressure generated (from the Greek osmós = thrust) is the so-called “osmotic pressure”: the greater the difference between the initial saline concentrations, and the higher the value of the osmotic pressure
What many people do not know, however, is that by exerting a counter pressure, higher than the osmotic one, the process can be reversed obtaining the so-called reverse osmosis.

The pressures required to perform reverse osmosis can be considerable: if it is sea water, the pressure that must be exerted is of several dozen atmospheres, while for the water or weakly brackish water the values ​​of the osmotic pressure are around at 10 bars.

This is the principle on which reverse osmosis is based: the passage of water through a semipermeable membrane in the opposite direction to the natural, with the generation of two solutions: one with a high salt concentration and the other very diluted.

The modern technologies offer on the market a wide choice of seawater reverse osmosis plants, compact and very efficient, which can be used to potabilize waters with a high concentration of salts and pollutants, or to improve the quality of common network waters.

The advantages of this incredible technology are many. The first of all is certainly that of being able to produce drinking water from an otherwise unusable resource. (Io direi: many are the advantages of this incredible technology: first and foremost, certainly being able to produce…)

Reverse osmosis can also improve the quality of drinking water. In some cases, in fact, drinking water does not present excellent characteristics, such as some groundwater characterized by a high concentration of nitrates, herbicides or pesticides, or other pollutants that are difficult to remove with other technologies; vice versa this technology offers an overabundant treatment for a large part of the network waters, which often only require a refinement of the organoleptic characteristics.

Reverse osmosis is a technique that is also widely used in the industrial sector in the desalination of sea water. A great boost in this direction comes from the Italian company B & P Water Technologies, a company highly specialized not only in reverse osmosis treatments for sea water but also in the treatment of industrial wastewater, of civil ones, in the softening of water, in the construction of desalination plants powered by solar panels, in the removal and recovery of oil and in many other areas related to water purification.

Every Industrial water treatment plantsthat B & P Water Technologies realizes is created in a highly customized way to fully meet the needs of the client and to solve any problem in water treatment, with an important ISO 9001 certification that allows it to be one of the leading companies in Europe in this important sector.