Settling pond with flow-slowing energy dissipator

The utility model relates to a settling pond with a flow-slowing energy dissipater, which belongs to the technical field of sewage treatment devices. The settling pond comprises a settling pond, a water falling well and a water outlet tube, wherein the water outlet tube is mounted at the bottom of the water falling well and is communicated with the water falling well; a guide plate is arranged between the settling pond and the water falling well; the guide plate is mounted between the settling pond and the water falling well in an inclined manner and is used for communicating the settling pond with the water falling well; the guide plate is mounted between the settling pond and the water falling well in an inclined angle of 30 degrees; a flow adjusting disc is arranged at an outlet of the water outlet tube; the flow adjusting disc is movably mounted inside the water outlet tube in a manner of being perpendicular to the length direction of the water outlet tube; the area of the flow adjusting disc is no less t