Unlocked layer type aeration oxidation pond

The utility model relates to an unlocked layer type aeration oxidation pond, relates to the technical field of sewage treatment and particularly relates to an unlocked layer type aeration oxidation pond which has the advantages of high working efficiency and good denitrification and dephosphorization effect. The unlocked layer type aeration oxidation pond is characterized by comprising a pond body and a micro aerator, wherein both sides of the pond body are provided with a water inlet and a water outlet; the height of the water inlet is aligned to the height of the liquid surface inside the pond body and higher than the height of the water outlet; the micro aerator is arranged in the pond body and floated on the liquid surface inside the pond body; the pond body is internally provided with a collector; the collector is communicated with the inner surface of the pond body and the bottom of a pond bottom; and water with saturated dissolved oxygen, which is positioned on the surface inside the pond, is collected