Multilevel processing method for regenerating acid base from glutamic acid isoelectric mother liquor

The invention relates to a multilevel processing method for regenerating acid base from glutamic acid isoelectric mother liquor. In the method, a multilevel bipolar membrane electroosmosis method is adopted; the flow direction of salt room liquid and acid room liquid in a bipolar membrane electrodialyzer is changed; and regenerating ammonium sulfate, ammonium chloride or ammonium nitrate in the glutamic acid isoelectric mother liquor comprising the ammonium sulfate, the ammonium chloride or the ammonium nitrate into corresponding sulfuric acid, hydrochloric acid or nitric acid and ammonia (NH3). By the multilevel processing method, concentration difference of inorganic acid radical ions between the acid room and the salt room is totally reduced; the migration rate of the inorganic acid radical is increased by 29 percent; migration energy consumption is reduced by 24 percent; H leakage from the acid room to the salt room is remitted; and concentration of acid liquor recovered by theacid room is increased.