N2O production in a single stage nitritation/anammox MBBR process

12
091016 Continuously operation, DO 1.0 (mg/l), aeration with
N2 gas.
4.5
12
091018 Continuously operation, DO 1.5 (mg/l), aeration with
N2 gas.
10
3.75
10
3.75
NO₂-N (mg/l)
8
6
4
2
3
2.25
1.5
0.75
DO (mg/l)
NO₂-N
biosensor
(mg/l)
DO (mg/l)
N₂O (µmol/l)
8
6
4
2
3
2.25
1.5
0.75
DO (mg/l)
N₂O
(µmol/l)
DO
(mg/l)
0
0 20 40 60 80
Time (min)
0
0
0 20 40 60 80
Time (min)
0
Figure C25.
Figure C 28
12
091017 Continuously operation, DO 1.5 (mg/l), aeration with
N2 gas.
4.5
12
091018 Continuously operation, DO 1.5 (mg/l), aeration with
N2 gas.
10
3.75
10
3.75
N₂O (µmol/l)
8
6
4
3
2.25
1.5
DO (mg/l)
N₂O
(µmol/l)
DO (mg/l)
N₂O (µmol/l)
8
6
4
3
2.25
1.5
DO (mg/l)
NO₂-N
biosensor
(mg/l)
DO (mg/l)
2
0.75
2
0.75
0
0 20 40 60 80
Time (min)
0
0
0 20 40 60 80
Time (min)
0
Figure C26.
Figure C29.
12
091017 Continuously operation, DO 1.5 (mg/l), aeration with
N2 gas.
N₂O (µmol/l)
10
8
6
4
2
3.75
3
2.25
1.5
0.75
DO (mg/l)
NO₂-N
biosensor
(mg/l)
DO (mg/l)
0
0 20 40 60 80
Time (min)
0
Figure C27.
75