Efficient denitrification and dephosphorization UCT (University of Cape Town) oxidation ditch

The utility model discloses an efficient denitrification and dephosphorization UCT (University of Cape Town) oxidation ditch, which belongs to the field of sewage treatment. In order to solve the problem that the existing oxidation ditch has a poor effect in biochemical dephosphorization, the efficient denitrification and dephosphorization UCT oxidation ditch comprises an aerobic tank, an anoxic tank and an anaerobic tank, wherein water passing channels are arranged between the aerobic tank and the anoxic tank and between the anoxic tank and the anaerobic tank; backflow channels are arranged between the anoxic tank and the aerobic tank and between the anaerobic tank and the anoxic tank; plug-flow mixers are arranged in the aerobic tank, the anoxic tank and the anaerobic tank; the anaerobic tank is provided with a sewage inlet; and the aerobic tank is provided with an effluent trough. The oxidation ditch has all advantages of the existing oxidation ditch as well as the denitrification effect; the biological de