Method for removing sulfate radicals in wastewater by bipolar membrane electrodialysis membrane stack

The invention belongs to the field of wastewater treatment, and relates to a method for removing sulfate radicals in wastewater by using a bipolar membrane electrodialysis membrane stack, a bipolar membrane electrodialysis device with a three-compartment structure is adopted, the membrane stack is partitioned by two bipolar membranes and two anion exchange membranes to form an acid chamber, and an intermediate chamber, a mixing chamber, an electrode plate and the bipolar membranes on two sides of the membrane stack form an electrode liquid chamber; each compartment is connected with a corresponding container through a pump; the sulfate radical removal method comprises the following steps that wastewater is introduced into a mixing chamber of a bipolar membrane electrodialysis device, deionized water is contained in an acid chamber and a middle chamber of the bipolar membrane electrodialysis device, a 0.05-0.25 mol/L sulfate solution is contained in an electrode solution of an electrode solution chamber, the o