Potassium permanganate lysis/ferric chloride flocculation/biological carbon skeleton combined conditioning method for municipal sludge

The invention discloses a potassium permanganate lysis/ferric chloride flocculation/biological carbon skeleton combined conditioning method for municipal sludge, belonging to the technical field of environmental management. The method comprises the step of feeding certain amounts of potassium permanganate, ferric chloride and biological carbon into excess sludge at a certain stirring speed according to a certain feeding sequence, so as to condition the municipal sludge, so that the dehydration property of the municipal sludge is improved. The method has the beneficial effects that the cost of conditioning agents is low, and the operation is simple; meanwhile, the sludge breakage, flocculating constituent reconstruction and filter cake skeleton structure construction are achieved by virtue of three conditioning agents, so that the dehydration property of the sludge is overall improved, and the limitations of a single method and the combination of two methods in the past are broken through; by virtue of combined conditioning of the three conditioning agents, the dehydration property of the sludge can be obviously improved, and the moisture content of dehydrated sludge reaches 62%-67%; the cost is low, and the process is simple. The method is significant for the solving of the pollution problem of sludge.