Carborem system C-700 transforms digestate (from sewage sludge, agroindustrial waste, organic fraction) in a SHORT TIME (1 hour), and relatively LOW TEMPERATURE (180-200 °C), with ZERO EMISSIONS into:
- LIQUID (75% by weight), rich in carbon, which is recovered in anaerobic digester to increase the biogas production of 40%-50%
- SOLID (25% by weight), sterilized (no pathogens), rich in nitrogen and phosphorus, which can be used as a SOIL IMPROVER
C-700 reduces DIGESTATE VOLUMES, hence DISPOSAL and TRANSPORTATION COSTS (and the associated EMISSIONS), up to 4 times.
Carborem technology set up by our research team at University of Trento is based on HTC (Hydrothermal conversion), an innovative technology to valorize biodegradable waste.
Carborem systems (C-700) can be easily installed in line with existing waste water treatment /anaerobic digester plants or, alternatively, in small scale plant treating sludge where the anaerobic digester does not exist. In this last case the liquid will be treated in small anaerobic digester supplied by Carborem.
Anaerobic digester plant at present
Anaerobic digester plant with C-700
The additional energy produced from the liquid of C-700 in anaerobic digester can be easily recovered to sustain energetically Carborem process, which is a LOW ENERGY plant.
VIEW OF CARBOREM COMPACT SYSTEM LOCATED IN A ANAEROBIC DIGESTION PLANT
Due to the low emissions the process is environmentally sustainable and will allow to save emissions due to transportation of the waste, avoiding the emissions linked to digestate land spreading.
From the technological point of view HTC:
- it is scalable, implementable with existing sludge treatment plants and containerizable
- sterilize the sludge. At 190 °C and 15 bar pathogens in the sludge are destroyed, avoiding their release to the environment
- allows the recovery of nutrients contained in the sludge (nitrogen, phosphorous)
- It reduces up to 4 times the sludge volume with a positive impact on transportation and disposal costs
- increase by 40-50% the biogas/biomethane production
- it is an exothermic process: when the reaction temperature is reached the reaction is self-sustained by energy release during the process.