Which process involves the addition of a floc-forming chemical to water?

The process that involves the addition of a floc-forming chemical to water is known as coagulation. In this process, chemicals such as aluminum sulfate or ferric chloride are added to water to destabilize colloidal particles and suspended solids. The chemical causes these particles to clump together, or coagulate, by neutralizing their charges, making them easier to remove from the water. Coagulation is a crucial step in water treatment because it helps reduce turbidity and prepares the water for subsequent processes such as flocculation, where the formed flocs are further agglomerated into larger particles. Understanding coagulation is essential for water operators, as it directly impacts the efficiency of the treatment process and the quality of the final water product.