ultra dewatering - Dehydris^® Ultra

The ultra-dewatering workshop Dehydris^® Ultra combines hydrothermal conditioning and post-dewatering to produce a sanitized biocoal that is easily transportable and storable. This process mimics the hydrothermal carbonization of the organic matter contained in sludge, in a thermal conditioning reactor operating between 175°C and 220°C at low pressure (< 30 bar).

The ultra-dewatering workshop can be configured with either a centrifugal decanter or a piston press for post-dewatering.

• With piston Press: Achieves 60–65% dryness without chemical conditioning for most sludge types, reducing sludge volume by up to 75%, cutting storage and transport costs (4x fewer trucks).
• With centrifuge: Achieves 40–45% dryness. It reduces sludge volume by up to 60%, requiring 2.5x fewer trucks.

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key figures

• Up to 75% cake volume reduction compared to conventional dewatering solution
• Up to 70% carbon retained in the Biocal

among our references

• Pau Lescar (France) 200,000PE