Method for forming aerobic granular sludge reinforced by constant-current piezoelectric field and iron-carbon material

The invention provides a method for forming aerobic granular sludge reinforced by a constant-current piezoelectric field and an iron-carbon material. The method comprises the following steps: 1) preparing an inner core carrier iron-carbon material of the aerobic granular sludge; 2) domesticating flocculent activated sludge; and (3) starting and operating the reactor, namely putting the domesticated flocculent activated sludge and the prepared iron-carbon material into an SBR (sequencing batch reactor), applying a constant-current piezoelectric field, operating the SBR in a whole-course aerobic manner, and culturing compact aerobic granular sludge with a regular shape for treating wastewater. The interior of the cultured aerobic granular sludge takes an iron-carbon material as an inner core for adsorption growth, so that the average size of particles is effectively improved, the particle forming speed is increased due to the existence of an electric field, the growth of filamentous bacteria can be inhibited to