Applied Mechanics and Materials Vols. 395-396

Abstract: Simulative wastewater was treated by a biofilm with soft filling and biological filter processing, the removal rate of COD /TN/NH₄⁺-N and TP were discussed at different C/N ratio. The combined processing of biofilm and biological filter was studied. The results showed that the removal rate of COD is 80%. Biofilm had highly treatment efficiency and biological filter processing needed lower energy at low organic loading. The combined processing showed that the removal rate of COD and NH₄⁺-N is more than 80% and 65% respectively. It will help for further study of domestic sewage treatment.