List of Biogas-Related Acronyms

ADC Alternative daily cover
ALK Alkalinity
BD Big Daddy (Bernie Sheff)
BMP Biochemical Methane Potential
BNR Biological Nutrient Removal
BOD Biochemical Oxygen Demand
BTU British Thermal Units
CEPT Chemically Enhanced Primary Treatment
CF Cubic Feet
CH4 (chemical formula for) Methane
CHP Combined Heat and Power
CNG Compressed Natural Gas
CO2 (chemical formula for) Carbon Dioxide
COD Chemical Oxygen Demand
CSTR Continuously Stirred Tank Reactor/ Total Mix Digester
DAF Dissolved Air Floatation
FOG Fats, oils, and grease
FS Fixed Solids
GGE Gallon of gasoline equivalent
ICE Internal combustion engine
HRT Hydraulic Retention Time
HSAD High Solids Anaerobic Digestion
KG kilogram
kWh Kilowatt hour
MGD Million Gallons per Day
MHI Multiple Hearth Incinerator
MJ Megajoule
MMBTU Million British Thermal Units
MSS Marin Sanitation Service
MSW Municipal Solid Waste
MW Megawatt
MWh Megawatt Hour
NH3 (chemical formula for) Ammonia
OLR Organic Loading Rate
O&M Operations and Maintenance
pH Measure of the acidity or alkalinity of a solution, 1-14 (<7 = acidic;>7=alkaline/basic)
PLC Programmable Logic Controller
PPA Power purchase agreement
RFS Renewable Fuel Standard
RIN Renewable Identification Number
RNG Renewable Natural Gas
RVO Renewable Volume Obligations
SRB Sulfate-reducing Bacteria
SRT Solid Retention Time
TDS Total Dissolved Solids
THP Thermal Hydrolysis Process
TK Total Potassium
TN Total Nitrogen
TP Total Phosphorus
TS Total Solids
TSS Total Suspended Solids
TWAS Thickened Waste Activated Sludge
UASB Upflow Anaerobic Sludge Blanket
VA Volatile Acids
VFA Volatile Fatty Acids
VFD Variable Frequency Drive
VS Volatile Solids
W Watt
WRRF Water Resource Recovery Facility
WWTF Wastewater Treatment Facility