- aeration
- airlift
- axial
- bioreactors
- coefficient
- deep
- deep_shaft
- dispersion
- fraction
- gas
- gas_liquid
- gas_phase
- hydrodynamic
- induced
- influenced
- inhomogeneities
- interpretation
- liquid
- liquid_phase
- mainly
- model_predicted
- mole
- net
- non_linear
- operated
- oxygen
- phenomenon
- prediction
- reactor
- reactors
- regimens
- remained
- saturation
- sludge
- steady
- steady_state
- tall
- transport
- treatment
- typically
- varied
- velocity
- vessel
- volumetric
- wastewater
