External Pump Mixing in Anaerobic Sludge Digestion

The continuous external pump mixing system is suitable for use in fixed cover anaerobic digester tanks whether cylindrical, cylindrical spherical, or egg shaped. External pump mixing systems has gained its importance due to no in-basin moving parts and simple operation. The items associated with external pump mixing system such as recirculation pumps, mixing nozzles, and their arrangements are explained. The advantages and disadvantages of external pump mixing along with their design parameters are also presented.