Circulating flow control device of wastewater anaerobic tank

The utility model discloses a circulating flow control device for a wastewater anaerobic tank, which relates to the technical field of sewage treatment and comprises a wastewater heating tank, a digestion tank, a first circulating pump, a second circulating pump and a sedimentation tank, and the digestion tank, the first circulating pump, the second circulating pump and the sedimentation tank are respectively arranged on one side of the wastewater heating tank. The upper surface of the wastewater heating box is provided with a wastewater inlet, one side of the wastewater heating box is hermetically connected with a flow meter, one end, far away from the wastewater heating box, of the flow meter extends into the digestion tank, and the digestion tank is of a conical structure. Wastewater in the wastewater heating tank is heated to about 35 DEG C or 53 DEG C, so that high digestion efficiency can be obtained to a certain extent, then the wastewater is guided into the digestion tank through the flow meter, the f