Coagulation and flocculation involves the removal of suspended solids and turbidity from water. The process of coagulation, along with flocculation, is used whenever the natural settling rate of suspended material is too slow to provide effective clarification. Coagulants are used to neutralize the charge of the suspended solids, bringing the particles together to create a small flocs. To generate larger flocs for faster settling, a high molecular weight, organic flocculant is generally used in combination with a coagulant.
