Model Of Pollutants Transformation And Transfer In Fluidized-pellet-bed Bioreactor

Fluidized-pellet-bed bioreactor technical origin from Xi'an University of Architecture and Technology pellet-coagulation technical in long-term research, the biggest characteristics of the technical is a good stability and sedimentation particle can be made, a very good solid-liquid separation can be completed in a short time. After biological be introduced to FPB, add Oxygen, training of biological particles, in order to applies to municipal sewage treatment. Based on continuous practice and research, continuous improvement, proposed fluidized-pellet-bed bioreactor. In FPB bioreactor, organic pollutants of biological treatment and solid-liquid separation at the same time completed, achieve the purpose of sewage purification.This paper studies the fluidized-pellet-bed bioreactor transfer and transformation of pollutants, The results showed that in FPB bioreactor COD, BOD5, NH3-N, TN, TP removal actions, coagulation were accounted for 68.2%,65.2%,11.4%,15.8%, biological action account for 19.56%,16.85%,15.17%,21.17%; Adsorption action is small.Summing up the previous FPB and pellet coagulation process. Established FPB bioreactor flow model from the theory. Extrapolated biological sludge particles size distribution in FPB bioreactor, And the head loss along the bed height change of direction.According to the law of pollutants transformation and transfer in FPB bioreactor. Combined with ASM1 and biofilm model. Proposed FPB bioreactor pollutants biological removal mathematical model.