Sludge because there are a lot of harmful substances, so to timely clean out, to be able to reduce the impact on people's health hazards, and sludge treatment commonly used and sludge drying sludge incineration, both of sludge sludge treatment technology can reduce the impact on the environment. The incineration is the most appropriate method, usually first sludge into sludge incineration incinerator to be burned, for the moisture content of 80%, dry heat value 2700kcal / kg of wet sludge can be used to dry the dryer the moisture content of the sludge to 60% and by flue gas heat exchanger to preheat the fluidizing air 650 ℃, into the furnace sludge can be spontaneous combustion without auxiliary fuel, saving operating costs.