Good shredding and homogenisation of the mashed organic suspension in the mashing or hydrolysis tank significantly improves the effectiveness of biogas generation. Vogelsang has developed a compact unit specifically for this purpose: the BioCut. Its effective combination of a sturdy rotary lobe pump and powerful cutter is capable of preparing an organic suspension of superior quality while simultaneously separating out heavy material. The BioCut is automatically controlled and feeds one or more digesters, in addition to handling further pumping tasks in the biogas plant when necessary.