Performance evaluation and advantage analysis of microbubble aerated fluidized bed reactor
Removing nitrogen from wastewater with low C/N ratio is a difficult task due to the insuffi-cient carbon source available for denitrification.This study used microbubble aeration biological flu-idized bed reactor to treat simulated domestic wastewater with different C/N ratios,and evaluated the operation performance of the reactor,and analyzed the advantages.The results show that when C/N is 9,4 and 3 respectively,the average removal rate of COD in micro-bubble aerated fluidized bed is above 90%,the average removal rates of TN are 66.42%,73.11% and 77.91% respectively,which can realize relatively complete simultaneous nitrification and denitrification,thus effectively removing pollutants in wastewater,and has the characteristics of"energy saving,material saving,land saving,high efficiency and comprehensive utilization of resources".