Sewage Sludge

Common digestion of bio waste and sewage sludge in a digester of a purification plant

A local waste-management concept plans the common digestion of bio waste and sewage sludge for the generation of fermentation gas and production of a compostable residual sludge. To this end the separately collected bio waste was pre-treated in a material dissolver and putrefied together with sewage sludge in the already existing digester.

Source: Federal Environment Agency (UBA)