The goal of Carborem is to reduce and valorise sewage and industrial sludges by means of a new generation technology known as HydroThermal Conversion (HTC). HTC allows the reduction of sludge volume to dispose of up to 90% and it converts the sludge into:
Carborem process concentrates some nutrients of the sludge (such as minerals, phosphorus and nitrogen) into the solid, giving to it some good properties for the use as soil improver.
Other ways to give a second life to the solid are:
Using Carborem technology, the wastewater treatment plants and anaerobic digestion plants’ operators would profit both from the increase of biogas production (and possibly biomethane) from the HTC liquid and, from the elimination of disposal costs of the sludge if the solid product (namely hydrochar) is exploited as a secondary raw material.
HTC allows sewage sludge and digestate final disposal to be closed in an innovative way in the logic of zero waste and the circular economy.
The main strengths of the technology can be summarized as follows: