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