TCEQ Class C Surface Water License Practice Exam

Flocculation plays a vital role in enhancing the coagulation process by allowing the formed flocs to grow larger, which facilitates their settling. During coagulation, small particles are agglomerated into larger clusters or flocs by the addition of coagulants. Once the coagulants are introduced, the flocculation process follows, where gentle mixing allows these tiny particles to collide and stick together, forming bigger, heavier flocs.

Larger flocs have a greater mass and surface area, making them more likely to settle out of the water column due to gravity. This increases the overall efficiency of the sedimentation process in water treatment, as larger flocs will settle faster, reducing the time required for separation and improving the clarity of the treated water. In summary, the main function of flocculation in the coagulation process is to enhance the size and mass of the particles, leading to more effective and efficient settling and removal of suspended solids from the water.