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For public authorities, the efficient management of the waste from water treatment plants is a matter of priority. Changes in regulations, citizen’s expectations and concern for protecting the environment all lead to a search for a solution fulfilling these criteria.

Sludge drying involves the use of heat to evaporate moisture from sludge in order to further reduce its volume and weight for transport and disposal.

Sludge drying is a solution which incorporates the various objectives of a sustainable biosolids management program.


Thermal drying is one of the methods that can be used to treat wastewater sludge. The advantages of thermal drying are many:

  • Reduction in volume
  • Production of biostable class A biosolids
  • Reduction of the overall sludge control cost, particularly through the reduction of storage, transport and incineration costs.

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Thermal drying is widely used in chemical, pharmaceutical and agro-food industries. A broad range of products such as industrial sludge, wood, biomass waste or paper sludge can be treated in this manner.

End Uses

Thermal drying is the technical solution that offers the most variety of end uses:

  • Agricultural reuse, with or without further additives
  • Gasification
  • Biofuel (cement plants, power stations, etc.)
  • Incineration or co-incineration
  • Landfill
  • Phosphorus recovery



Product Focus/

  • Operational Safety
  • Very low energy levels
  • Low operating cost
  • Proven and reliable
  • Simple to operate
  • Long service life
  • Small footprint
  • No odor emissions to the environment
  • Quick start-up