1、 if removed or cut off external circulation system, this system will become a common type of mechanical stirring liquid fermentation tank. Air mixes with ferment liquid completely by use of mechanical stir to promote the dissolution of oxygen, which is necessary for microbial growth and reproduction and metabolism. It is realized by hybrid of turbine mixing and power required for phase mass transfer. This type of reactor has the strongest adaptability. It can provide high mass transfer rate and necessary mixing speed for filamentous bacteria fermentation liquid from Newtonian type till non Newtonian type. which is suitable for Cultivation of aerobic microorganism.
2、 If injected nitrogen or air to surface or deep liquid, this general type of mechanical stirring type liquid fermentation tank will be Suitable for cultivation of anaerobic microorganisms.
3、 If removed air distributor, mixing system (long axis, paddle, baffle etc), this system would becomes a set of external circulated airlift type liquid ferment tank. Which will be particularly suitable for the long mycelium fungus without mechanical shear force,
If added lighting system, this external circulated airlift liquid ferment tank would become one set of lighting biological reactor. Which will be Suitable for cultivation of photosynthetic bacteria and algae.
