▎ 摘　　要

NOVELTY - A ship domestic sewage treatment oxide anode comprises titanium substrate and coating of active surface. The active coating comprises graphene, gold (Au), zirconium oxide (ZrO2) and tin oxide (SnO2). USE - Ship domestic sewage treatment oxide anode. ADVANTAGE - The oxide anode has processing efficiency reaching to more than 90% and has very high electrode life of not less than 500 hours. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of the oxide anode which comprises sand blasting titanium substrate and carrying out enlargement processing for surface roughness; removing titanium base surface after sand blasting treatment of oil; etching with 10-30 wt.% oxalic acid solution for 0.5-1 h; coating using graphene, chloroauric acid, and zirconium nitrate, dissolving into n-butanol or isopropanol, adding concentrated hydrochloric acid, stirring, and using grain complete dissolution; and coating and sintering.