N2O production in a single stage nitritation/anammox MBBR process

12
091010 Continously operation, DO 1.5 (mg/l)
4.5
12
091014 Continously operation, DO 1.0 (mg/l)
4.5
10
3.75
10
3.75
N₂O (µmol/l)
8
6
4
2
3
2.25
1.5
0.75
DO (mg/l)
N₂O
(µmol/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
0 20 40 60 80
Time (min)
0
0
0 20 40 60 80
Time (min)
Figure C19.
Figure C22.
12
091010 Continously operation, DO 1.5 (mg/l)
12
091015 Continuously operation, DO 1.0 (mg/l), aeration with
N2 gas.
4.5
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 (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
0 20 40 60 80
Time (min)
0
0 20 40 60 80
Time (min)
0
Figure C20.
Figure C23.
12
091013 Continously operation, DO 1.0 (mg/l)
4.5
12
091016 Continuously operation, DO 1.0 (mg/l), aeration with
N2 gas.
4.5
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)
N₂O
(µmol/l)
DO (mg/l)
2
0.75
2
0.75
0
0
0 20 40 60 80
Time (min)
0
0 20 40 60 80
Time (min)
0
Figure C 21
Figure C24.
74