Aeration tank have a lot of foam reasons

Raw water contains a large amount of surfactant components (substances added during the production process, the foam is white, the bubbles are small, light and not sticky).

Small bubbles created after the newly installed aerator head (short-term effects).

A large number of lipid substances or microorganisms are produced in microbial reproduction (the microbial growth and reproduction activities are limited, the foam is mud color, the bubble is large, and the viscosity is attached).

Sludge anticursing foam (the viscous and muddy color of the bubble and vermilion produced after the aerobic sludge stays in the secondary sedimentation tank for too long).