Treabnent Plants for Denitrification
10.0
9.5
9.0
E
Alkalinity
i;::
8.5
0
:c
0.3
.5
8.0
J:
c.
0.5
7.5
1
2
7.0
3.0 meqv/1
6.5
0.0 .1
.2
.3 .4
.5
.6
.7
.8
.9
1.0
10.1
Alkalinity
9.5
0.3
0.6
9.0
E
i;::
8.5
0
1.0
:c
.5
8.0
J:
2.0
c.
7.5
3.0 meqv/1
7.0
6.5
0.0 .1
.2
.3 .4
.5
.6
.7
.8
.9
1.0
10.0
Alkalinity
9.5
0.3
1
9.0
2
E
i;::
8.5
3.0 meqv/1
0
:c
.5
8.0
J:
c.
7.5
7.0
6.5
0.0 .1
.2
.3 .4
.5
.6
.7 .8 .9 1.0
Depth compared with depth
of active biofilm
Fig7.23 An example of calculated pH profiles in a denitrifying biofilm for different pH values
(7.0-8.0) and alkalinity (0.3-3.0 meqv/l) in the bulk water !10/.
259