MBR and Sludge glossary (B)
BAC
Biologically activated carbon
Backmixing
Mixing of feed solids with solids product
BAF
Biological aerated filter
Basket centrifuge
Centrifuge based on an upright rotating vessel (or basket)
Beach
Region just before the sludge cake exits a centrifuge
Belt dryer
Convector dryer configuration using a conveyor belt to transport the solids through the reactor
Belt filter press
Sludge dewatering technology based on removing water under pressure by squeezing sludge between two recirculating porous belts
Bio-oil
Liquid fuel-like product generated from organic matter
Biochar
Solid charcoal-like product generated from non-oxidative, dry thermochemical processes
Biofuel
Fuel generated from a renewable source, such as biomass
Biogas
Gas produced from anaerobic digestion
Biogas production rate
Rate of production of biogas in mass per unit time
Biological stabilisation
Biodegradation of sludge to a stable, non-rotting, odour-free and largely disinfected product
Biosolids
Organic solids content of sewage sludge
BNR
Biological nutrient removal
BOD
Biochemical oxygen demand
BOD5
Five-day biochemical oxygen demand
BOO(T)
Build, own, operate, (transfer)
BPA
Biological potential activity
bpCOD
Biodegradable particulate COD
BPR
Biological phosphate removal
Bubbling fluidised bed reactor (BFBR)
Reactor configuration used in thermochemical treatment based on a non-recirculating bed of sand fluidised by upward flowing air
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This page was last updated on 25 March 2025
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