▎ 摘　　要

NOVELTY - This utility new type claims a one reverse osmosis membrane device, comprise the reverse osmosis membrane component and membrane shell, said reverse osmosis membrane film piece is set on the inner shell, a membrane shell set with a raw water inlet, a water exit and concentrated water exit, from the original water inlet entering into the membrane shell to inner, a reverse osmosis membrane component is graphene thin film formed of film piece, a water exit and a reverse osmosis membrane connecting piece, the reverse osmosis membrane permeation of a rear water from a water exit, the rest of concentrated water from the concentrated water exit. This utility new type can be of metal ion in absorbing water well, increase the use life of reverse osmosis membrane device, and material of graphene get simple structure, cheap price, so the cost is saved.