Organic loading rate (OLR) in biogas: definition, calculation and operating ranges

The organic loading rate (OLR) is the most important operating parameter of a digester: it measures how much organic matter is fed per reactor volume and day (kg VS/m³·d). It is calculated on volatile solids (VS), not on total solids (TS), because only the volatile fraction degrades and produces biogas. A mesophilic CSTR works well […]