can air agitation could be given before UASB in an Effluent Treatment Plant of Food Industries.?

Question

UASB(Upflow Anaerobic Sludge Bio-reactor) functions in the absence of atmospheric oxygen at lower DO(Dissolved Oxygen). But, as per my belief plain air agitation(coarse bubbling in the bottom of water tank) will not change the DO to that extent that UASB functioning would be disturbed. Effluents which require anaerobic treatment are non-bio-degradable. Such effluent cannot accept free oxygen so easily. If they can, the UASB will not be required & one has to follow aerobic system.

Answer 1

This is all Greek to me! Lol!