▎ 摘　　要

NOVELTY - Producing sponge-type sorbent medium comprises (a) ultrasonically cleaning and drying the sponge; (b) immersing the sponge in a graphene solution containing graphene oxide and/or reduced graphene oxide, and physically squeezing; (c) primary heat-treating the sponge for 3-5 hours; (d) ultrasonically cleaning the sponge to remove overcoated particles on the sponge surface; and (e) secondary heat treating the sponge for 3-5 hours. USE - The sorbent medium is useful in performing sorption removal of organic and oily contaminants (claimed) and as supplementary material to replace or supplement the adsorbent fabric i.e. currently as a follow-up measure in the case of underwater and underground oil pollution. ADVANTAGE - The sorbent medium is can be reused many times, simple to apply to the water treatment process, easy to recover, and easy to use; has excellent physical and chemical stability and excellent in economical efficiency; and effectively prevents aggregation or restacking of graphene oxide or reduced graphene oxide, optimizes the sorption performance to form a three-dimensional network structure between graphene oxide and reduced graphene oxide, and does not generates secondary pollutants e.g. sludge. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: ponge-type sorbent medium prepared by above method, where the sorbent medium is graphene oxide particles and/or reduced graphene oxide particles coated on the surface of the sponge; and performing sorption removal of organic and oily contaminants, comprising introducing the sponge-type sorbent medium into the contaminated water, sorbing and removing organic compounds or oil contaminants in water or underground.