low temperature sludge drying system – Evaporis™ LT

low temperature sludge drying system – Evaporis™ LT
Energy recovery from on-site low-calorie processes provides the dryer’s energy supply.

The EvaporisTM LT,low temperature sludge drying system, works on the principle of continued drying by hot air convection (65/80°) in a closed tunnel. The workshop accepts urban wastewater dewatered sludge, physical-chemical, biological or mixed (with or without tertiary treatment) as industrial wastewater sludge. It applies for dewatered sludge with minimum dryness around 25%.

Evaporis LT uses the dryer of the Spanish company STC (Sistemas de Transferencia de Calor) specializing in the thermal drying of sludge at low temperatures. STC is a subsidiary of SUEZ.

key figures

  • Modular and scalable design available from 30,000 PE
  • Only 90°C required temperature for the heat source

among references

  • Saint-Marcellin (France) – 35,000 PE
  • Reduces consumption of primary energy using lost heats that haven't been use on the treatment plant (cogeneration)
  • Quick start-up and automated process
  • Low maintenance
  • Dryers not concerned by ATEX regulations
  • Modular system

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