Design of nitrifying plants
Influent
rn 3 /d
4000
Recycle
m 3 /d :
0
Tank no.
Influent
1
2
3
4
Volume
m3
100
100
100
100
Surface area
m2
30000
30000
30000
30000
KLa value
d-1
600
600
600
600
Oxygen
2.0
6.3
7.4
7.7
9.3
CODdegrad.
g/m3
150.0
34.7
7.0
2.1
1.5
NH4-N
g/m3
25.0
20.1
11.8
2.7
0.6
N02-N
g/m3
0.5
0.5
0.5
0.3
0.2
N()J-N
g/m3
1.0
0.6
7.9
17.2
19.8
HC03
mol/m 3
6.0
5.7
4.6
3.3
2.9
COD inert
g/m3
30.0
32.9
34.3
35.3
36.1
Heterotrophic biomass g/m 3
120.0
167.6
175.1
170.6
163.0
Nitrosomonas
g/m3
0.0
0.1
0.1
0.1
0.1
Nitrobacter
g/m3
0.0
0.0
0.0
0.0
0.0
Table 6.7
Result of computation of a rotating disc plant in four sections,
which have a total load of 5 g BOD/(m 2 d) /4/.
226