Abbreviations and symbols
AFP advanced facultative ponds
AIT Asian Institute of Technology, Bangkok, Thailand
AIWPS advanced integrated wastewater pond system
AMP advanced maturation ponds
APU aquatic processing unit
ASP advanced settling ponds
atm atmosphere (pressure)
AU animal unit
BARC Beltsville aerated rapid composting
BOD 5 5-day biochemical oxygen demand
BODL ultimate biochemical oxygen demand
BTU British thermal unit
C carbon
C/N carbon/nitrogen ratio
C 2 H 5 OH ethanol
cal calorie