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Sludge Treatment Processes

Sludge treatment in general

Stabilisation

Thickening

Dewatering

Sludge drying

The goals of sludge treatment are:

  • Stabilisation for a controlled degradation of organic ingredients and odour removal

  • Volume and weight reduction

  • Hygiene - the deadening of pathogen organisms

  • Ameliorating of sewage sludge characteristics for the further utilization or disposal


The accompanying procedures are used to reach these goals.

The sludge consistency and appearance is changed through treatment. It must be pointed out that also the heating value of the sludge changes with the way of the treatment. Anaerobic treated sludge has a lower heating value than raw sludge because of sewage gas production. This point has to receive attention by a thermal disposal.


Filter presses for sludge treatment

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