Compound depurative preparing method for removing benzene series material from air

The invention relates to a preparation method of compound purifying agent used for removing benzene compounds from air, belonging to the metallurgy chemical industry preparation technical field. The invention is suitable for purifying organic volatile matters, etc. various harmful gases in the present family decoration. The compound purifying agent takes waste active carbon containing 5 to 10 percent of zinc as material, and activates and recycles the waste active carbon through decomposing, adulterating, activating and modifying processes, changes the chemical combination state of the zinc in the waste active carbon, simultaneously and leads various functional units which can absorb and degrade the benzene compounds to be formed on the surface of the active carbon. The invention can adapt to a long existence period and a long release period of indoor air pollutants, and the removal rate to poor polar or non-polar benzene compounds, etc. harmful gases can reach more than 98 percent.