N2 - The selected techniques were reviewed and their technological aspects were characterized in the context of multi-phase flow for biogas production. The conditions of anaerobic fermentation for pig slurry in a mono-substrate reactor with skele-ton bed were analysed. The required technical and technological criteria for producing raw biogas were indicated. Design and construction of the mono-substrate model, biogas flow reactor, developed for cooperation with livestock buildings of various sizes and power from 2.5 kW to 40 kW. The installation has the form of a sealed fermentation tank filled with a skeletal deposit constituting a peculiar spatial system with regular shapes and a rough surface. Incorporating a plant in such a production cycle that enables the entire slurry stream to be directed from the cowshed or pig house underrun channels to the reactor operating in the flow mode, where anaerobic digestion will take place, allows to obtain a biogas. The paper presents preliminary results of experimental investigations in the field of hydrodynamic substrate mixing system for biogas flow assessment by the adhesive bed in the context of biogas production. The aim of the study was to assessment and shows the influence of the Reynolds number on the biogas resistance factor for the fermentation process in mono-substrate reactor with adhesive deposit. The measurement results indicate a clear effect of the Reynolds number in relation to the descending flow resistance coefficient for the adhesive bed. L1 - http://czasopisma.pan.pl/Content/113451/PDF-MASTER/Wa%C5%82owski%20483.pdf L2 - http://czasopisma.pan.pl/Content/113451 PY - 2019 IS - No 42 EP - 156 KW - fermentation process KW - mono-substrate reactor KW - multi-phase flow KW - skeleton bed A1 - WaƂowski, Grzegorz PB - Polish Academy of Sciences; Institute of Technology and Life Sciences - National Research Institute DA - 2019.07.29 T1 - Multi-phase flow assessment for the fermentation process in mono-substrate reactor with skeleton bed SP - 150 UR - http://czasopisma.pan.pl/dlibra/publication/edition/113451 T2 - Journal of Water and Land Development