The invention discloses a whole-process treatment and
resource utilization device and method for sweet
potato starch wastewater, and the method comprises the following steps: high-concentration
wastewater and low-concentration
wastewater are respectively pretreated and then enter a high-wastewater adjusting tank and a low-wastewater adjusting tank, and the
effluent of the low-wastewater adjusting tank enters the high-wastewater adjusting tank or directly enters an A / O tank; and the
effluent of the high wastewater adjusting tank sequentially enters an EGSB
anaerobic reactor, a secondary air floatation tank, an A / O tank, a biochemical
sedimentation tank, a magnetic coagulation
sedimentation tank and an
effluent tank. According to the invention, two sets of pretreatment modules are designed, so that the tank capacity is designed more accurately, the agent adding amount is selected more accurately, and the removal efficiency is greatly improved; in the pretreatment process, the
sludge is subjected to
protein recovery through a
protein separation system, so that
resource utilization of the sweet
potato starch wastewater is realized; and an alternate treatment mode of biochemical treatment, physicochemical treatment, biochemical treatment and terminal deep physicochemical treatment is adopted, so that the method has higher flexibility and
impact load resistance.