Oily sewage treatment equipment

The utility model relates to oily sewage treatment equipment, belonging to the field of sewage treatment. The equipment comprises an air flotation oil separator and an integrated sewage treatment tank connected with the water outlet of the air flotation oil separator. The equipment is characterized in that the integrated sewage treatment tank consists of an anaerobic tank, an anoxic tank, an aerobic tank and a sedimentation tank which are communicated with one another in sequence, as well as a clean water tank and a sludge tank which are respectively communicated with the sedimentation tank. According to the oily sewage treatment equipment disclosed by the utility model, oily sewage is firstly subjected to oil removal by using the air flotation oil separator, and then flows in a low-inflow and high-outflow mode by virtue of the anaerobic tank, the anoxic tank and the aerobic tank; the anaerobic tank and the anoxic tank are arranged to be annular tanks so as to ensure that sewage in the tanks can be uniformly