|
Parameter
|
SF1
|
SF2
|
|---|
|
Influent
|
Effluent
|
% Removal
|
Influent
|
Effluent
|
% Removal
|
|---|
|
Temp (°C)
|
27.1 ± 0.1
|
27.4 ± 0.2
|
–
|
25.2 ± 2.0
|
25.1 ± 2.5
|
–
|
|
pH
|
7.4–7.6
|
7.2–7.4
|
–
|
7.0–7.2
|
6.9–7.1
|
–
|
|
SS (mg L− 1)
|
36 ± 2
|
6 ± 1
|
83 ± 2
|
127 ± 16
|
14 ± 2
|
88 ± 0.5
|
|
BOD (mg L− 1)
|
35 ± 2
|
6 ± 1
|
83 ± 2
|
126 ± 21
|
10 ± 2
|
91 ± 0.1
|
|
COD (mg L− 1)
|
73 ± 5
|
18 ± 2
|
75 ± 1
|
275 ± 24
|
30 ± 2
|
89 ± 0.2
|
|
NH4+ (mg L− 1)
|
13.3 ± 0.2
|
2.3 ± 0.4
|
83 ± 6
|
21 ± 2.5
|
8.6 ± 1.4
|
59 ± 5
|
|
NO3− (mg L− 1)
|
0.4 ± 0.1
|
5.2 ± 0.5
|
–
|
0.20 ± 0.08
|
0.5 ± 0.04
|
–
|
|
NO2− (mg L− 1)
|
0.1 ± 0.05
|
0.02 ± 0.01
|
78 ± 11
|
0.04 ± 0.02
|
0.02 ± 0.01
|
50 ± 1
|
|
Organic-N (mg L− 1)
|
4.4 ± 0.1
|
1.9 ± 0.16
|
57 ± 3
|
4.2 ± 1.71
|
1.5 ± 0.9
|
67 ± 8
|
|
TKN (mg L− 1)
|
17.7 ± 0.3
|
4.2 ± 0.56
|
76 ± 3
|
25.2 ± 4.2
|
10.1 ± 1.0
|
60 ± 3
|
|
TN (mg L− 1)
|
18.2 ± 0.4
|
9.4 ± 2.1
|
48 ± 10
|
25.4 ± 4.3
|
10.6 ± 2.4
|
59 ± 2
|
|
TP (mg L− 1)
|
3.0 ± 0.2
|
1.9 ± 0.1
|
37 ± 4
|
2.9 ± 0.8
|
1.5 ± 0.7
|
48 ± 12
|
- Remark: All data values are averages ± S.D., n = 12 samples
