Energy for circular economy
C-Green
Makes wet waste valuable
Commercialised by
C-Green
Solna, Sweden
Växlarevägen 31, 170 63 Solna, Sweden
Sustainable developement goals
Makes wet waste valuable
A solution based on hydrothermal carbonisation allowing separation of phosphorous and heavy metals from sludge, degeneration of toxins, deactivation of pharmaceuticals and transformation of the remaining sludge into bio-coal.
The need
Municipal and industrial sludge is a complex waste stream that is difficult to dewater and contains pathogens, contaminants, and valuable nutrients such as phosphorus. With tightening regulations and rising disposal costs, there is an increasing need for more sustainable sludge management solutions.
The solution
C-Green’s HTC technology converts wet sludge into a dry, sterile and inert carbon product, eliminating pathogens while significantly improving dewaterability. The process is highly energy-efficient because it treats sludge in its wet state and integrates well with existing anaerobic digestion, creating strong synergies in wastewater treatment plants. In addition, the HTC system is compact and robust, enabling cost-effective and reliable sludge management.
The value proposition
- Reduces amount of waste by 5 times
- Turns harmful sludge into homogenous, sterile biofuel with a high energy density for power production.
- Facilitates recovery of nutrients.
- Gives municipalities or sludge owners more flexibility in how to handle sludge.
- Allows municipalities to anticipate changes in regulations.
- Offers very relevant synergies with biogas production.