▎ 摘　　要

NOVELTY - A heavy metal wastewater treatment method comprises adding graphene oxide as ion flotation nano-collector to wastewater containing heavy metals, stirring, adding emulsified kerosene as flocculant, stirring, adding pine oil as foaming agent, stirring, performing flotation under aeration condition, and stirring. USE - The method is for heavy metal wastewater treatment. ADVANTAGE - The method is simple, achieves removal of heavy metal ions and water purification such that wastewater meets the national industrial discharge standard, and has low energy consumption, high enrichment ratio, and small sludge volume.