Symbol
Explanation
Dimension
Unit,
See
for example
page
s
dispersion
SVf
dimensionless concen144
tration of dissolved
matter in biofilm
sg
dimensionless inter37
face concentration
s
concentration of dissol- M · L - 3
kg/m 3 , kg BOD(S)/m 3 ,
37
ved matter (substrate
kgCOD/m 3
concentration)
So
diffusible matter
M·L-3
g/m3
184
SE
enzyme concentration M·L- 3
g/m3
184
Svt
concentration of
M·L-3
kg/m 3 , g N/m 3
37
dissolved matter in
biofilm
Sg
interface concentration M·L- 3
g/m3
154
SHAc
dissolved biological,
M·L-3
kgCOD(S)/m 3
98
very easily degradable
organic matter
SI
dissolved biological
M·L- 3
kgCOD(S)/m 3
43
inert organic matter
Ss,N
dissolved degradable MN· L- 3
gorg.N/m 3
organic nitrogen
SI,N
dissolved organic inert MN· L- 3
gN/m 3
48
nitrogen
SNH4
concentration of
MN· L- 3
gN/m 3
48
ammonium and
ammonia nitrogen
SNOX
concentration of nitrite MN· L- 3
gN/m 3
48
and nitrate nitrogen
365