What is the reason for the absence of flocs in the aerobic tank of wastewater treatment?
Thread Content
What is the reason for the absence of flocs in the aerobic tank of wastewater treatment?
1. In the initial stage, the activated sludge has not yet formed well-defined flocs, making it difficult to settle. Excessive aeration causes the sludge to oxidize on its own, and the steam drum continuously breaks down the activated sludge, resulting in finer particles that are difficult to settle. These fine particles are then discharged along with the effluent, affecting water quality. 2. In the aerobic tank, an excessively low sludge load leads to excessive aeration; this causes the sludge to oxidize itself, resulting in reduced flocculation of the sludge, a dispersed sludge structure, and turbid water with high levels of suspended solids. 3. In the aerobic tank, an excessively low sludge load results in a long sludge retention time; excessive aeration leads to poor sludge flocculation and a loose sludge structure.