What does Calcium Carbonate (CaCO3) do in water treatment?

Calcium Carbonate (CaCO3) plays a significant role in water treatment primarily by decreasing corrosion in water systems. When dissolved in water, Calcium Carbonate can help to stabilize the pH levels and enhance the overall alkalinity of the water. By providing a buffering action, it creates a more favorable environment for the formation of a protective scale on the surfaces of pipes and equipment.

This scale acts as a barrier that reduces the leaching of metals from the pipes, thereby minimizing corrosion. Controlling corrosion is essential in water treatment processes because it can lead to the deterioration of infrastructure and potential contamination of the water supply.

While other compounds in water treatment processes may promote bacterial growth, increase turbidity, or reduce pH levels, the specific function of Calcium Carbonate focuses on its ability to help protect against corrosion and maintain system integrity.