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Converts wet sludge into clean bio-coal

The need

Waste-water treatment plants worldwide produce sewage waste with residue sludge difficult to dewater containing bacteria, pharmaceuticals, phosphorous, toxins and heavy metals. Disposal costs are high and environmental targets not reached.

The solution

A compact, robust and efficient process solution based on hydrothermal carbonisation allowing separation of phosphorous (for further use in fertilising applications) and heavy metals from sludge, degeneration of toxins, deactivation of pharmaceuticals and transformation of the remaining sludge into bio-coal. It enables waste-water treatment plants to reduce their operating and capital cost, while meeting the environmental target for sludge management.

The value proposition

• Cost-effective sludge management saving approx. 30% vs traditional systems.
• Small, scalable one-size-fits-all solution, energy-efficient process.
• Turns harmful sludge into homogenous biofuel with a high energy density for power production at combined heat and power (CHP) plants.


Converts wet sludge into clean bio-coal

Oxypower HTC Units 2560X1600
C GREEN Oxypower HTC Heionla Under Construction
Oxypower HTC Plant Assembly
TB 1909 I2 1929
HTC Process Transp

First HTC plant in Heinola Finland

First HTC plant in Heinola Finland

Commercialised by

C-Green Technology AB Teknikringen 38 — 114 28 Stockholm http://www.c-green.se/
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