The Moving Bed Biofilm Reactor (MBBR process) absorbs the advantages of the traditional fluidized bed and biological contact oxidation processes, and has good nitrogen and phosphorus removal effects. The sewage continuously passes through the suspended packing in the MBBR reactor and gradually forms a biofilm on the inner and outer surfaces of the filler, and the sewage is purified through the action of microorganisms on the biofilm. The packing material moves freely under the action of the gyratory flip of the mixture in the reactor: in the case of aerobic reactors, the packing is moved by aeration, and in the case of anaerobic reactors, it is stirred by machine.
