________ is treated in activated sludge reactor.

The trickling filter consists of electric systems.

_________ is the actual mass of oxygen transferred per unit time.

Calculate the theoretical oxygen requirement for the following details. Flow: 200 m3/h BOD load: 800 mg/L

________ is oxidized by heterotypic micro-organisms.

Which is the next reactor after activated sludge reactor in the treatment process?

_______ provides the dual purpose of providing DO and mixing of the mixed liquor and wastewater.

After the treatment, the BOD demand __