Method for treating coking and biochemical sludge

The invention discloses a method for treating coking and biochemical sludge and belongs to the technical field of resource recycling and reusing. The method comprises the following steps of concentrating the residual sludge discharged from a backflow sedimentation tank and a secondary sedimentation tank; delivering the concentrated sludge into a sewage well to prevent the sludge from being hardened; collecting environment dust-removing dust; spraying the sludge to the environment dust-removing dust to humidify the environment dust-removing dust; delivering the sprayed and humidified environment dust-removing dust to a coal preparation belt. By the method for treating the coking and biochemical sludge, the problem that the biochemical sludge is difficultly treated is solved.