Flocculation requires what type of mixing?

Flocculation relies on slow and gentle mixing to encourage small particles, such as colloids, to clump together into larger aggregates, known as flocs. This process is crucial in water treatment as it allows for the more effective removal of these larger particles during subsequent filtration or sedimentation.

During flocculation, the gentle mixing provides enough energy to bring particles into contact without breaking apart the existing flocs that are forming. If the mixing were too vigorous or turbulent, it could disrupt the formation of these aggregates and lead to inefficient removal of impurities. Therefore, the method of slow and gentle mixing is essential in promoting the desirable aggregation of particles during the flocculation process.