▎ 摘　　要

NOVELTY - Method for preparing graphene-based melamine foam involves (a) dispersing the graphite and the stripping agent in a solvent, ultrasonically treating and centrifuging, and taking the supernatant to obtain graphene dispersion, and (b) immersing the melamine foam in the graphene dispersion liquid, repeatedly squeezing it many times, and taking it out to dry after leaving still to obtain the graphene-based melamine foam. USE - The method is used in the treatment of oily wastewater (claimed). ADVANTAGE - The method is environmentally friendly, economical, easy to operate, and suitable for industrial production, has excellent hydrophobic properties, can selectively absorb oil, and is effective. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a continuous oil-water separation device having oil-water mixing storage tanks, fluid pumps, separators, oil tanks and water tanks, where the fluid pump is connected to the oil-water mixing storage tank and the separator feed port, the upper end of the separator is provided with a water outlet port connected to the water tank, and the lower end of the separator is provided with an oil separation outlet port connected to the oil tank, and the water outlet and the oil outlet are separated by the graphene-based melamine foam inside the separator.