20.500.12556/DKUM-92263 Experimental and mathematical investigation of anaerobic granulate density via settling velocity The objective of this study was to determine the density of anaerobic granules on different heights of a full-scale Upflow Anaerobic Sludge Bed reactor. The density was defined through the settling velocities of anaerobic granules, measured in a full-scale Upflow Anaerobic Sludge Bed reactor. In this study, granular density was calculated with the measured settling velocities and developed mathematical model. The developed mathematical model is based on the Stokes model. In the experiment, granules were taken from different heights of an Upflow Anaerobic Sludge Bed reactor, from 0.6 to 7.6 m. The granules’ diameters varied between 1 and 5 mm. The granules were taken from six different heights through the reactor. The settling velocity of the active granules (with gas in the granule pore and on the surface of the granule) was measured first. After the active granules’ settling velocity measurement, the granules were placed in a vortex to obtain degassed granules (granules without any gas in the pores or on the surface), for which the settling velocities were also measured later. It is shown that granules’ densities at different heights are independent of the reactor height. Upflow Anaerobic Sludge Bed reactor microstructure anaerobic granular sludge settling velocity density anaerobni reaktor s slojem blata navzgor anaerobno zrnato blato hitrost usedanja gostota true false true MDPI AG Angleški jezik Slovenski jezik https://www.mdpi.com/journal/processes © 2022 by the authors Članek v reviji 2025-03-26 12:38:14 2025-03-26 12:38:14 2025-03-27 03:11:51 0000-00-00 00:00:00 2022 0 0 Str. 1-11 iss. 9 (1833) Vol. 10 Sept. 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2022-08-08 2022-09-09 2022-09-12 628.3:519.6 121036291 10.3390/pr10091833 2227-9717 processes-10-01833.pdf processes-10-01833.pdf 1 5A375CDDB21C4C5D9B06F6769EA4BC5A f8436da79c754e021745c9a179a900424c34940be063b8657a2be0550f299aae fec4cf19-0a36-11f0-af23-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=189665 https://www.mdpi.com/2227-9717/10/9/1833 0 04a2c0cc-0a37-11f0-af23-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=189666 Fakulteta za strojništvo 0 0 0