Device and method for promoting aerobic granulation of continuous flow sludge

The invention provides a device and method for promoting aerobic granulation of continuous flow sludge, and relates to the technical field of biological sewage treatment.The device comprises a water distribution well, an anaerobic tank, an anoxic tank and an aerobic tank which are sequentially connected; larvae of chironomidae are placed in the screen box, and part of the screen box is immersed below the liquid level of the aerobic tank; the aeration end of the aeration device is arranged at the lower part of the inner side of the aerobic tank, and the aeration device is used for continuously aerating the aerobic tank and controlling the concentration of dissolved oxygen in the aerobic tank, so that selective pressure is provided for aerobic granulation of continuous flow sludge by utilizing the predation characteristic of chironomidae larvae on floc sludge, and thus, the continuous flow of sludge can be realized. The flocculating sludge is gradually converted into granular sludge, and the granular sludge is