The thermal drying process is a viable and proven method for the treatment of solids resulting from several wastewater treatments. It is based on the removal of water from the obtained sludge: the temperature of the wet solid mass is raised so that water is driven off as vapor thus leading to a volume and a weight reduction.

The main thermal drying systems included in STC portfolio and selected according to the process needs are listed below:

  • rotary drum dryers
  • flash dryers
  • belt dryers
  • tray dryers
  • paddle, disc or auger dryers
  • fluidized bed dryers
  • Electric dryers