Antiscalants

Antiscalants

In the process of reverse osmosis and nanofiltration, there is an increase in concentration of salts in the water powering the system, in effect surpassing the solubility equilibrium for salts such as calcium carbonate or calcium sulfate, and resulting in the creation of chemical residue, so-called scaling. This process can, in the worst case, lead to destruction of the osmotic membranes.

Description

The basic method of limiting the scaling process is softening the water. Removing the calcium and magnesium salts prevents the precipitation of calcium carbonate, sulfate or phospate, but this process might be costly in the case of high efficiency devices. Additionally, ionite softening results in releasing additional loads of chlorides to the environment.
The softening process does not prevent the precipitation of substances other than those listed. For this reason, the optimal strategy of preserving membranes and reducing exploitation costs is the use of antiscalants. Antiscalants are specialized preparations preventing the precipitation of chemical residue, usually used in small doses (about 10-20ppm). They are usually picked based on detailed analysis of the water.

MCC offers both the selection and supply of antiscalants, as well as specialized dosing technologies.