▎ 摘　　要

NOVELTY - Preparing a polyether polyurethane-graphene oxide foam involves: (A) preparing a polyether polyurethane foam; (B) using graphene oxide solids to prepare a graphene oxide dispersion; and (C) cutting the polyether polyurethane foam obtained in step (A) into blocks, then immersing in the graphene oxide dispersion obtained in step (B), after shaking, curing by UV light, and drying to obtain the product. USE - The method is useful for preparing a polyether polyurethane-graphene oxide foam, which is useful as a biological filler for sewage treatment (all claimed). ADVANTAGE - The method provides a new way for the immobilization of graphene. The method prepares polyether polyurethane-graphene oxide foam with excellent hydrophilicity, water retention properties, surface charge distribution and effect on biofilm formation in a simple, economical and environmentally-friendly manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the polyether polyurethane-graphene oxide foam prepared by the preparation method, which has a pore diameter of 200-600 mu m, a compressive strength of greater than 310 kPa, and a compression modulus of greater than 7.5 MPa.