What Is The Function of Scale Inhibitors

A scale inhibitor is a commonly used water treatment chemical. Scale inhibitors are chemical contamination devices that prevent the deposition of inorganic materials in water and are widely used in the industrial water treatment industry.

Scale inhibitors can be divided into copolymer scale inhibitors, phosphine polymer scale inhibitors, natural polymer scale inhibitors, and green new polymer scale inhibitors.


The scale inhibitor is mainly used for the purpose of sequestration solubilization, threshold effect, lattice distortion, distortion, electrostatic repulsion or dispersion mechanism and scale inhibition dispersion, as well as low molecular weight polyacrylic acid (sodium).

The low molecular weight polyacrylic acid (sodium) has good water solubility and dispersibility, no scaling operation and a certain concentration of alkaline conditions.

The following are the main effects of scale inhibitors.

Chelate dissolution

The scale inhibitor can form a soluble chelate (eg, magnesium ions, calcium ions, etc.) with the cations in the water to prevent contact with the anion.

Therefore, the possibility of scale formation is greatly reduced and the magnesium ions and calcium ions in the cooling water are increased. Relatively speaking, the solubility of calcium and magnesium salts increases.

Dispersive solidification

The anionic scale inhibitor dissociates in water. When the anions generated when they dissociate in water collide with the calcium carbonate crystallites, physical and chemical adsorption occurs, and the surface of the microcrystalline double layer is negatively charged.

When the adsorbed product comes into contact with other scale inhibitor molecules, the adsorbed crystals are transferred and the grains are uniformly dispersed. This hinders the collision between the grains and the metal surface and reduces the number of cores in the solution.

Since the chain structure of the scale inhibitor can adsorb many crystallites of the same charge, the electrostatic repulsion prevents the crystallites from colliding with each other, thereby avoiding the formation of large crystals.

The result of the dispersion is to prevent the scale particles from contacting and coagulating with each other, thereby preventing scale growth.

The scale inhibitor can effectively control calcium carbonate, barium sulfate, calcium sulfate, and barium sulfate. The organic flocculant can be used at the same time, can be directly added or diluted, and is resistant to iron and alumina.

The use of scale inhibitors in water treatment systems can extend the cleaning cycle of water treatment systems and extend the life of equipment, saving operating costs. Therefore, scale inhibitors in water treatment systems are being used more and more widely.

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