The reverse osmosis treatment is a natural physical process to desalinate water while respecting the environment. Desalination happens by means of untreated water passing through particular semimpermeable membranes which hold all the dissolved salts, organic substances, bacteria and virus thanks to their characteristics. Pure water thus produced is constantly available, whereas the waste can be discharged in the sewerage system without any further treatment, or be reutilized.
If we divide a container into two parts by means of a semimpermeable membrane and put a saline solution on one side and pure water on the other, we will notice that the saline solution dilutes through osmosis.
This phenomenon causes an increase in the saline solution’s volume and a pressure difference between the solution and the water, generally known as “osmotic pressure”. Artificially causing a pressure on the saline solution, higher than the osmotic one, will cause the process reversal:
water is “pressed” through the membrane in the reverse direction, while all the dissolved substances are kept and expelled. An high-pressure pump pushes salt-rich water towards the membranes which are arranged in compression- safe modules. Pure water passes through the membranes and results in the available material; the concentrated waste which does not pass through the membranes is the discharged.
The range offers machines with flow from 0.3 to 100 mc/h; for bigger flow you have to considerate versions with two or more filters in parallel.