Flow adjusting device and sewage treatment tank

The utility model provides a flow adjusting device and a sewage treatment pond, and relates to the technical field of sewage treatment.The flow adjusting device comprises a water passing pipeline, the water passing pipeline penetrates through the pond wall and extends to the outer space of the pond wall, the water passing pipeline is sleeved with a connecting sleeve, and the other end of the connecting sleeve is rotationally connected with a rotating pipe; a first pipe hoop is arranged on the connecting sleeve, a tooth-shaped blocking piece is arranged on the first pipe hoop, and the rotating pipe rotates to a specified angle and is fixed on the tooth-shaped blocking piece; a second pipe hoop is arranged on the rotating pipe, a second stand column is connected to the second pipe hoop in a welded or bolted mode, the second stand column is connected with an outer sleeve in a sliding mode, a clamping baffle is arranged in the lower space of the outer sleeve, and the clamping baffle is connected to the tooth-shap