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Water treatment semipermeable membrane, (reverse) osmosis

In the simplest definition, a semipermeable membrane is said to exist when the membrane allows the solvent, but not the solute, to pass through. More generally, only molecules below a certain molar mass or colloids or particles below a certain size are allowed to pass through.

FreeFlow System Antiscalants from Dr. Nähring Water Treatment GmbH

During the filtration process of a reverse osmosis system, the raw water is separated into permeate and concentrate. Depending on the yield, the water constituents in the concentrate are concentrated to a greater or lesser extent. In this process, the solubility limit of one or more compounds may be exceeded. In this case, the addition of antiscalant is necessary, which prevents or hinders and delays the formation of residues.