Home > Knowledge > Content

Reasons for adding scale inhibitor to Reverse Osmosis Equipment

Jan 04, 2020

The basic function of the reverse osmosis scale inhibitor is solubilization. After the reverse osmosis scale inhibitor dissolves in water, it ionizes to form a negatively charged molecular chain, which forms a water-soluble complex or chelate with Ca2 +. Increase the solubility of inorganic salts, play a role in scale inhibition.

①Suppression of precipitation function: In the system with scale inhibitor, the ion accumulation value of the anion, cation and anion of the scale-prone component starts to precipitate is much larger than the critical precipitation ion accumulation value without scale inhibitor.

②Dispersion function: When the scale inhibitor is present, the precipitated particles are harder to agglomerate than the precipitated particles when the scale inhibitor is not.

③Lattice deformation effect: The crystals precipitated in the system with scale inhibitors have spherical, polyhedral, snowflake-like and other indefinite shapes. It is generally believed that indefinite crystals are scale inhibitors adsorbed on the crystal growth point during the crystal growth process, which causes the surface growth rate to decrease sharply, and crystals with different shapes are grown.

④Low-limit effect: The dosage of scale inhibitor is equivalent to that the scale component in water is much lower, but it can also show the scale inhibitory effect.