Symbol
Explanation
Dimension
Unit,
See
for example
page
BODoo
total biochemical
M-L- 3
g02/m 3
41
oxygen demand
c
total concentration
M-L- 3
g/m3
38
(dissolved+ suspended)
Cr
concentration of
M-L- 3
g/m3
74
inhibitor
Cp
phosphorus
M· L- 3
gP/m 3
concentration
CTN
total nitrogen
M-L- 3
gN/m 3
48
CTP
total phosphorus
M· L- 3
gP/m 3
49
C/N
carbon-nitrogen ratio Me· MN- 1
kgCOD/kgTN
249
in denitrification
process
{C/N)optimum optimum C/N-ratio
Mc·MN- 1
kg COD/kg TN
251
for denitrification
{C/N)practice necessary C/N-ratio
Mc-MN- 1
kgCOD/kgTN
251
for a given denitrification process
COD
chemical oxygen
M-L- 3
g02/m 3
43
demand (with potassium dichromate)
CODp
chemical oxygen deM·L- 3
g02/m 3
41
mand (with potassium
permanganate)
COD(B)
biomass or sludge
M·L- 3
g02/m 3
63
mass, measured as
COD
COD(S)
substrate (dissolved), M·L- 3
g02/m 3
63
measured as COD
D
diffusion coefficient
Lz.r1
cm 2 /s
152
354