▎ 摘　　要

NOVELTY - The device has a drainage valve (33) which is located in a tertiary solid waste settling tank (34) that is provided with a water delivery pipe (36) communicated with the interior of the tertiary solid waste settling tank. The water delivery end of the water delivery pipe is connected with a drain pipe (38). A tertiary sterilization column (37) is arranged at the joint between the water delivery pipe and the drain pipe. A second-stage graphene water purification column (39), a third-stage graphene water purification column (40) and a fourth-stage graphene water purification column (41) are sequentially arranged between the drain pipe and the water pipe (42). The water pipe outputs qualified discharged medical water purification (43). USE - Graphene based purification device for medical sewage in general hospitals. ADVANTAGE - The suspended solids, harmful organic substances, heavy metals, vanous pathogenic bacteria, parasites, residual antibiotics, oil stains, surfactants and radioactive substances are removed from medical sewage to the maximum extent, so as to meet the relevant national emission standards, ensure the safety of medical sewage discharge from various medical units in general hospitals and serve the construction of green medical institutions. The medical sewage graphene nano purification technology and device have good purification effect and long service life, and are expected to be applied to various medical sewage treatment in various general hospitals. The medical wastewater is classified and purified, and the whole purification is combined according to the characteristics of medical wastewater in different medical units, so as to make the purification process more targeted and greatly improve the purification effect and efficiency of medical wastewater. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a purification method of graphene based purification device for medical sewage in general hospitals. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the graphene based purification device. Drainage valve (33) Tertiary solid waste settling tank (34) Water delivery pipe (36) Tertiary sterilization column (37) Drain pipe (38) Second-stage graphene water purification column (39) Third-stage graphene water purification column (40) Fourth-stage graphene water purification column (41) Water pipe (42) Qualified discharged medical water purification (43)