Increased biogas production

Thermal hydrolysis consists of exposing sewage sludge to high temperature and pressure. As steam explosion destructs the cell walls, more volatile solids in the sludge get transformed into biogas during mesophilic anaerobic digestion. The same volume of sludge, pre-treated via thermal hydrolysis, can yield up to 50% more biogas compared to conventional digestion.

Some of this additional biogas is used for producing the steam needed for thermal hydrolysis, but often there is surplus available for other energy demand. The biogas can be utilised in a gas engine with generator to produce green electricity. Alternatively, it can be cleaned and stripped of CO2 and used to substitute natural gas to grid or used directly for vehicles as renewable fuel.

Read more on how Cambi has enhanced biogas production

Cambi HP - Birmingham Minworth UK

Birmingham - Minworth

Cambi thermal hydrolysis plant in Birmingham, UK in operation since 2018. Operated by Severn Trent.
CambiTHP at Psyttalia, Athens

Athens - Psyttalia

Cambi thermal hydrolysis plant in Greece, delivered to EYDAP, in operation since 2015. Operated by Aktor.
CambiTHP - Hengelo, Netherlands


Hengelo is the second Cambi thermal hydrolysis plant in the Netherlands, delivered to Water Authority Vechtstromen in 2016.