METHOD AND INSTALLATION FOR GASIFICATION OF COMMUNAL WASTE WATER SLUDGES AND HUMIC SUBSTANCES

The method according to the invention comprises the steps of mechanically dehydrating the stabilized sewage sludge; mixing agricultural waste material to the mechanically dehydrated sewage sludge; drying the mixture thus obtained; adding municipal waste material to said mixture in an amount of 30-35%; homogenizing the mixture; feeding the homogenized mixture into a pyrolysis furnace in a continuous mode under control; and gasifying it in the furnace. The pyrolysis furnace used in the method comprises a furnace body, a fluid bed formed in the furnace body and means for feeding air and the material to be gasified as a secondary fuel material, wherein said means for feeding the air and the secondary fuel material comprise at least one rotatory burner arranged circumferentially in the upper part of the furnace, said bumer(s) being adapted to tilt around a horizontal axis.