Nomenclature
CH4-COD methane expressed as COD CODr (%) percent COD removal
HRT hydraulic retention time
M (%) percent COD converted into methane
OLR organic loading rate
SCOD soluble chemical oxygen demand
SMA specific methanogenic activity
SRT solid retention time
TCOD total chemical oxygen demand
TSS total suspended solids
UASB up-flow anaerobic sludge bed (anaerobic digester) VFA volatile fatty acids
VSS volatile suspended solids