Symbol
Explanation
Dimension
Unit,
See
for example
page
FESP
excess sludge
M-1 1
kg SS(B) I d, kg VSS/ d,
123
production
kgCOD/d
Foz
oxygen consumption M-1 1
kgOz/d
Foz,v
oxygen consumption M·L- 3
kg0z/m 3
fs,SI
fraction of inert matter MI· Msf 1
kg COD /kg COD
in dissolved matter
fs,max
constant for max.
24
second in maximum
month (infiltration)
fsi,N
fraction of nitrogen in MN·Msf 1
kgTN/kgCOD
49
inert dissolved matter
Fsp
sludge production
M-1 1
kg SS(B) I d, kg VSS/ d,
122
kgCOD/d
FsP,v
volumetric sludge pro- M . L - 3
kgSS(B)/m 3
duction
fx,N
fraction of nitrogen in MN· Mx- 1
kgTN/kgCOD
suspended solids
fx,P
fraction of phosphorus Mp·Mx- 1
kgTP/kgCOD
282
in suspended solids
fx,XI
fraction of inert
Mxi· Mx- 1
kg COD /kg COD
207
organic matter in
suspended solids
fxB,XI
fraction of inert orga- Mxi·Mxs- 1 kg COD /kg COD
nic matter in biomass
fxs,N
fraction of nitrogen
MwM-\s kgTN/kgCOD
49
inXs
fxs,N
fraction of nitrogen in MN·Mxs 1
kgTN/kgCOD
231
biomass
356