N2O production in a single stage nitritation/anammox MBBR process

12
090927 Prolonged unaerated period, DO 3.0 (mg/l)
4.5
12
091006 Continously operation, DO 1.5 (mg/l)
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)
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)
0
0
0 50 100 150 200
Time (min)
0
0
0 20 40 60 80
Time (min)
Figure C13.
Figure C16.
12
090927 Prolonged unaerated period, DO 3.0 (mg/l)
4.5
12
091007 Continously operation, DO 1.5 (mg/l)
4.5
10
3.75
10
3.75
NO₂-N (mg/l)
8
6
4
3
2.25
1.5
DO (mg/l)
NO₂-N
biosensor
(mg/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 50 100 150 200
Time (min)
0
0
0 20 40 60 80
Time (min)
Figure C14.
Figure C17.
12
091006 Continously operation, DO 1.5 (mg/l)
4.5
12
091007 Continously operation, DO 1.5 (mg/l)
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)
NO₂-N (mg/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
0 20 40 60 80
Time (min)
0
0
0 20 40 60 80
Time (min)
Figure C15.
Figure C18.
73