Aeration tank structure for engineering sewage treatment

The utility model belongs to the technical field of sewage treatment. The utility model relates to an aeration tank, in particular to an aeration tank structure for engineering sewage treatment. The device comprises a sewage channel, a water-passing oxygenation structure and an aeration tank, the sewage channel is connected with a water inlet of the aeration tank through a water passing oxygenation structure; wherein the sewage channel is provided with a mechanical impeller used for sewage surface oxygenation, the water-passing oxygenation structure is composed of a base body and multiple layers of water-passing steps arranged on the base body, the bottom of the aeration tank is provided with an air distribution pipe through a support, aeration heads are evenly distributed on the air distribution pipe, and the air inlet end of the air distribution pipe is connected with an air supply pipeline. According to the utility model, mechanical aeration and blast aeration are integrated; the aeration capacity is great