There are many sewage treatment processes used at home and abroad, mainly including activated sludge process and biofilm process. The common aeration method, oxidation ditch method, A/B method and A2/O method belong to the former, while the biological rotary table method and contact oxidation method belong to the latter. integrated Sewage treatment equipment It is a sewage treatment equipment integrating primary sedimentation tank, I and II level contact oxidation tank, secondary sedimentation tank and sludge tank, and carries out air blast aeration in I and II level contact oxidation tank to effectively combine the contact method and activated sludge method. At the same time, it has the advantages of both, overcomes the disadvantages of both, and further improves the sewage treatment level.