Sludge Treatment

Sludge handling from fish farms:

See our concept:

Sludge Drying System: AMOF-Fjell Drying System for Sludge Treatment

Process Flowsheet Amof-Fjell Indirect Biosolids Drying Process:

Process Features : 

The process is based on the rigid AMOF-Fjell Thermal Disc Dryer designed for heating by steam (6-10 bar), hot water or thermal oil Energy consumption is typically 750 kW thermal energy and 50 kW electric power per ton evaporated. The wet sludge from the mechanical dewatering plant is pumped into the dryer, where it is mixed with a portion recycled dried solids to moisture content below the glue formation limit. This is necessary to avoid excessive load, tear and wear on the machinery. The mixture is efficiently heated to the boiling point by the large heat surface available inside the disc dryer, and vapour is mixed with an air stream and sucked out from the vapour dome. Oxygen level is kept below explosion limit, but in addition the dryer has explosion reliefs installed as an extra precaution. The vapour is cleaned and condensed in a cyclone and two stage condensing and odour scrubber system. The latent heat in the vapour is regenerated in an indirect cooling loop and can be re-used in the water treatment plant. The small amount of excessive air (200-400 Nm³ per ton evaporated) is removed from the process and typically incinerate in the steam boiler.