▎ 摘　　要

NOVELTY - Method for treating excess sludge based on microbial electrolytic cell involves preparing amino-modified graphene oxide/carbon nanotube composite material, and using the amino-modified graphene oxide/carbon nanotube composite material as anode material in microbial electrolytic cell, then adding residual sludge to microbial electrolytic cell and starting the microbial electrolytic cell to treat the residual sludge. The amino-modified graphene oxide/carbon nanotube composite material is prepared by dispersing graphene oxide and purified carbon nanotubes in absolute ethanol, ultrasonically processing, dripping purified carbon nanotube solution in graphene oxide dispersion, ultrasonically processing, filtering, washing, vacuum drying, grinding to obtain graphene oxide/carbon nanotubes, adding anhydrous ethanol to graphene oxide/carbon nanotubes, ultrasonically dispersing, adding acetone and hydrazine hydrate, reacting, filtering, washing, vacuum drying at 40-80 degrees C, and grinding. USE - Method for treating excess sludge based on microbial electrolytic cell. ADVANTAGE - The method uses composite material to strengthen the release and utilization of organic matter in residual sludge in microbial electrochemical cell, effectively promotes the growth and enrichment of anode hydrolysis fermentation bacteria, electricity-generating bacteria and denitrifying bacteria, and realizes high-efficiency electrolysis treatment of sludge, and can reduce amount of sodium nitrite added, improve the utilization rate of organic matter, enhance the resource utilization and energy recovery of sludge, and does not cause secondary pollution to the environment. DETAILED DESCRIPTION - Method for treating excess sludge based on microbial electrolytic cell involves preparing amino-modified graphene oxide/carbon nanotube composite material, and using the amino-modified graphene oxide/carbon nanotube composite material as anode material in microbial electrolytic cell, then adding residual sludge to microbial electrolytic cell and starting the microbial electrolytic cell to treat the residual sludge. The amino-modified graphene oxide/carbon nanotube composite material is prepared by dispersing graphene oxide and purified carbon nanotubes in absolute ethanol, ultrasonically processing, dripping purified carbon nanotube solution in graphene oxide dispersion, ultrasonically processing, filtering, washing with deionized water and absolute ethanol, vacuum drying at 50-70 degrees C in oven for 10-15 hours, grinding to obtain graphene oxide/carbon nanotubes, adding anhydrous ethanol to graphene oxide/carbon nanotubes, ultrasonically dispersing, passing nitrogen gas for 5-10 minutes to purge the air in the bottle, stirring, slowly adding acetone to the reaction product, reacting for 4-8 hours, adding hydrazine hydrate, reacting at room temperature under protection of nitrogen for 5-9 hours, filtering with 0.45 mu m pore size filter membrane, washing with anhydrous ethanol and deionized water, vacuum drying at 40-80 degrees C for 8-12 hours, and grinding.