Accurate carbon source feeding device

The utility model relates to the technical field of sewage treatment, in particular to an accurate carbon source feeding device which comprises a moving trolley arranged at the top of a sewage treatment pond, the moving trolley comprises a frame, a driving shaft and a driven shaft, the two ends of the driving shaft extend to the outside of the frame, and the ends of the driving shaft are connected with driving wheels. The two ends of the driven shaft extend out of the frame, the ends of the driven shaft are connected with driven wheels, a driving assembly used for driving the driving shaft to rotate is further arranged on the frame, a lead screw is rotationally arranged in the frame, a transmission plate is in transmission connection with the lead screw, and a feeding mechanism is arranged at the top of the transmission plate. The feeding mechanism comprises an agent tank and a spraying assembly, and a stirring assembly is rotationally arranged in the agent tank. According to the utility model, the carbon sou