Sewage treatment equipment

The invention relates to the technical field of sewage treatment, in particular to sewage treatment equipment which comprises a filtering tank, an anaerobic tank, an aerobic tank, a sedimentation tank and a treatment tank, a water inlet pipe is connected between the filtering tank and the anaerobic tank in a penetrating mode, the aerobic tank is located on the side, away from the filtering tank, of the anaerobic tank, and a pipeline is connected between the aerobic tank and the sedimentation tank in a penetrating mode. A pipeline is also connected between the sedimentation tank and the treatment tank in a penetrating manner. The device further comprises a water changing mechanism, a gas storage mechanism, a combustion mechanism and a gas-liquid separation mechanism. Methane generated in the anaerobic tank is discharged into the gas storage tank, negative effects caused by direct discharge of methane into the atmospheric environment are avoided, carbon dioxide and water generated after combustion of methane ar