Where is flocculation typically performed?

Flocculation is typically performed in a basin that has been designed or baffled into multiple compartments. This setup encourages the gentle mixing of water with chemicals, such as coagulants, to promote the aggregation of fine particles and impurities into larger flocs. As the water moves through the compartments, it creates conditions ideal for this process, allowing sufficient time and space for flocs to form effectively.

The multi-compartment design helps control the flow and retention time, ensuring optimal contact between the water and the coagulants. This is crucial for improving the efficiency of the subsequent sedimentation or filtration processes, as larger flocs can settle more easily or be filtered out.

While flocculation can involve elements of chemical dosing, settling tanks, and filtration, it is specifically in the basin with compartments that the mixing and floc formation process takes place most actively and purposefully.