Why are diffused air flocculators often not favored?

Diffused air flocculators are often not favored primarily because they struggle to control an even-rolling current. An even-rolling current is crucial for achieving effective flocculation, as it ensures that the particles within the water mix uniformly. If the current is inconsistent or turbulent, it can disrupt the formation of floc, leading to ineffective sedimentation or removal of particles.

This lack of control over the flow can lead to uneven distribution of the air bubbles needed for flocculation, which impacts the overall efficiency of the treatment process. The inability to maintain a stable and consistent environment for floc formation can result in lower quality water treatment outcomes and may require operators to consider alternative flocculation methods that provide better results in controlling the mixing environment.

The other aspects such as cost of operation, floc production inefficiency, and maintenance requirements could be important considerations, but the primary challenge that often leads to the disfavoring of diffused air flocculators is related to their struggle in managing an even-rolling current.