Activated sludge circulatory pool

The utility model discloses an activated sludge circulatory pool, including the aeration tank, the water inlet has been seted up to the below of aeration tank left end, and the left end of aeration tank is provided with first dog, the top of first dog is provided with the compressor, vent pipe is installed to the left end of compressor, the right -hand member of aeration tank is provided with thesecond dog, this activated sludge circulatory pool's aeration tank through the motor drive stirring fan blades from last air inlet mode and compressor supply gas from under air inlet mode make up, andvent pipe's air guide hole is seted up in both sides, like this when admitting air, the air current can horizontal migration, receive pressure can the rebound when too big, can increase the area of contact with bottom activated sludge like this, improve the activity of microorganism, and arouse the vortex through just stirring the dish during stirring fan blades, the anti - dish of stirring blocks rivers, make rivers alte