Study on the thermal treatment of sludge

The thermal treatment of dry sludge in a tube furnace under different conditions is studied.Influences of temperature,reaction time,flow rate of gas and atmosphere conditions on thermal treatment of sludge are investigated.The results show that the highest liquid yield is obtained at temperature of 440 ℃,reaction time of 50 min and air flow rate of 20 mL/min,in which the yield of liquid,solid and gas are 42.5%,49.5% and 8.0%,respectively.