Question

In sewage treatment floes play a major role.

1. What are floes?

2. State their role in effluent treatment and their ultimate fate in sewage treatment tank.

Answer 1

1. Floes are masses of bacteria associated with fungal laments to form mesh-like structures.

2. Floes consume the organic matter in the effluent and reduces the BOD. Then the effluent passed into settling tank, where floes are allowed to sediment forming activated sludge.