The Doppstadt DSP 205 Screw Press separates the liquid and the solid fractions of bio-degradable waste. The screw is driven by a hydro motor with planetary gear. The rotating cone presses the material with a pre-set pressure through the screening baskets, which are available with different mesh sizes. The liquid fractions can be used for biogas production and the solid fractions for thermal utilization or for composting. The BioPress DSP 205 is the same unit, but is a static piece of equipment for stationary applications.