The raw material passes from a feeder through a lateral auger into a worm gear, which fills the BIOseparatorw. The unpacked biomass, freed from its impurities, is crushed and shredded by grinding mills and a grinding sieve, and flows into a pump receiver tank, from where it either flows directly into a storage tank or can be pumped out. Impurities (glass, metals, plastic, etc.) are ejected through a discharge chute. A drainage screw press, integrated in the discharge chute, squeezes out the fluids still present in the impurities and pumps them back into the process again.