NOTATION
AC
AF
AFB
AS
AS-BNR
BNR
BOD
BPR
(T)COD
DAF
DO
HRT
N
O&O
TP
RO
SBR
SVI
TDS
TF
TKN
TSS
UASB
VSS
Anaerobic contact process
Anaerobic filter
Anaerobic fluidised-bed reactor
Activated sludge
Activated sludge-biological
removal process
Biological nutrient removal
Biological oxygen demand (mg/l)
Biological phosphorus removal
(Total) chemical oxygen demand (mg/1)
Dissolved air flotation
Dissolved oxygen
Hydraulic retention time
Nitrogen concentration
Oil and grease concentration
Total phosphorus concentration
Reverse osmosis
Sequencing batch reactor
Sludge volume index
Total dissolved solids concentration
Trickling filter
Total Kjeldahl nitrogen concentration
Total suspended solids concentration
Upflow anaerobic sludge-blanket reactor
Volatile suspended solids concentration