The Research on Operation Parameters Optimization of BAF

The experiment adopted dynamic continuous test, discussing the change of filter velocity, gas-water ratio and water temperature for the stable operation influence of BAF. By comparing the removal efficiency of COD, NH3-N and turbidity of effluent under different filter velocity, gas-water ratio and water temperature conditions, system determined the best operation parameters for BAF. The result showed that the removal efficiency of system was best when filter velocity was 6m/h, gas-water ratio was between1:1 and 1:2. The effluent quality met urban wastewater reuse related standards. Water temperature had a certain effect on effluent quality, but it was not the main influence factors.