Activated carbon composite material, preparation method and application thereof

The invention relates to an activated carbon composite material, a preparation method and application thereof. The preparation method comprises the following steps: firstly, adding activated carbon into a ferrite solution, and stirring, so as to obtain activated carbon particles; ensuring that the mass molar ratio of activated carbon to ferrite is (20-100) g: 1mol; secondly, adding the activated carbon particles into a solvent, stirring under the existence of a reducing agent, and drying, so as to obtain the activated carbon composite material. The activated carbon composite material is good in mechanical strength and high number of reutilization, and has large advantage as a cleaning agent for sewage. The activated carbon composite material can effectively remove ammonia nitrogen, organics and total phosphorus by being applied to sewage treatment. After treatment, the content of total organic carbon is reduced by greater than 40 percent, fluorescence characteristic is obviously reduced, the content of ammonia nitrogen is reduced by greater than 70 percent, and the content of total phosphorus is reduced by greater than 80 percent.