Sewage sludge is continuously generated on municipal and industrial wastewater treatment plants during the process of organic pollutant degradation.
Adequate sludge treatment is required prior to disposal and a major pre-treatment step is to reduce disturbing solids and the water content of the sludge.
Mechanical sludge treatment primarily comprises the processes of sludge screening, thickening and dewatering.
After these mechanical treatment steps, the process chain allows for drying of sewage sludge and later thermal utilisation.
