Method for recovering ruthenium in activated carbon supported ruthenium catalyst

The invention relates to a method for recovering an activated carbon supported ruthenium catalyst, which comprises the steps of: performing high-temperature roasting on an activated carbon supported ruthenium catalyst in which an alkali metal or alkaline-earth metal compound additive is not contained or is removed; performing high-temperature alkaline fusion on a roasted product; dissolving an alkaline fusion product in hot water with a temperature of between 60 and 95 DEG C to obtain a K2RuO4 or Na2RuO4 solution, adding ethanol or an alkaline solution into the K2RuO4 or Na2RuO4 solution to obtain a Ru(OH)4 precipitate; and drying the precipitate, or dissolving the precipitate by using strong acid, or using H2 to reduce the precipitate to obtain different ruthenium products. The method hasthe advantages that precious metal ruthenium can be efficiently recovered, the operation process of the recovery is safe, alkali metal and alkaline-earth metal additives can be synchronously recovered, and the form of the recovered product can be selected. The method has reliable technology, simple operation, low cost and no pollution.