Sludge drying unit
Solia™
Veolia Water STI
Process principle
Greenhouse solar sludge drying
* Under the effect of solar radiation and the action of an automated windrow turner (Soliamix™), water evaporates from the sludge for subsequent removal from the greenhouse by a powerful air draft.
* The fermentation step is promoted by regular turning of the sludge windrows ; the energy released by the oxidation of organic matter in the sludge accelerates the evaporation process.
A unique windrow turning system
Once unloaded in the greenhouse, the dewatered sludge is piled in the form of windrows with the automated Soliamix™ system. In order to renew the exchange surface and for aeration, the windrows are turned at regular intervals.
The Soliamix™ range of windrow turners is available in 3 sizes and their operation may be automated.
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