Automatic decontamination and drainage system adopting air flotation method

The invention discloses an air flotation method automatic decontamination and drainage system which comprises a decontamination box body, an electrolytic cathode, an electrolytic anode, a driving device, a dirt scraping assembly and a dirt discharging funnel, the electrolytic cathode is in a vertical needle shape and is fixedly connected to the bottom of the decontamination box body, and the electrolytic anode is in a thin rod shape and is fixedly connected to the inner side wall of the decontamination box body; the driving equipment is fixedly connected to the outer side wall of the decontamination box body, decontamination and drainage can be automatically carried out from the lower portion in three batches by setting the positions of the induction electrode and the button and a special triggering mode, purification is ensured to be more complete, sewage convection at different depths is not needed, stirring equipment is eliminated, cost is saved, and operation is convenient. And the probability of forming