Växjö - Sundet

Växjö - Sundet

Located outside the Växjö municipality in southern Sweden, the Sundet wastewater treatment plant uses co-digestion to treat both sludge and food waste.  

Cambi's thermal hydrolysis process was installed at the Sundet plant in 2014, increasing biogas production by approximately 20% compared with conventional anaerobic digestion. The biogas is upgraded to vehicle gas and used in the transport sector, while the reduced volume of biosolids cut down transport and energy costs.  The high-quality end product can be used in various soil products or used as a soil amendment or fertiliser.