EUV ANTICA

The hardness of water increases with the number of these ions. Based on the same, but reversed, equation, hard water can be softened by separating calcium back to the solid phase (CaCO 3). This process occurs, for example, in boiling hard water. The well-known incrustation (see Figure A providing a view from an electron microscope) is formed at the phase interface and suspension is formed in the liquid phase - at a greater distance from the phase interface. Water softening requires a certain amount of power, either heat power, mechanical power, or electric power. The lowest consumption, and therefore the highest efficiency of (CaCO 3) separation, is achieved by electric power, which makes it possible to reverse the course of the above-mentioned reaction. The quantity of electric power must be, however, sufficient to maintain the thermodynamic water balance!!! Consequently,