| Condition |
Period of operation (d) |
INFLUENT |
COD
(mg L-1) |
AB
(mg CaCO3 L-1) |
pH |
TDS
(mg S L-1) |
SO4-2
(mg S L-1) |
| 1 |
181 to 220 |
89.3 ± 12.0 |
623.4 ± 98.0 |
8.9 ± 0.3 |
45.3 ± 21.6 |
10.9 ± 6.1 |
| 2 |
221 to 246 |
72.1 ± 13.2 |
589.2 ± 92.8 |
8.9 ± 0.3 |
37.9 ± 15.1 |
14.5 ± 5.0 |
| 3 |
247 to 259 |
81.3 ± 15.4 |
573.7 ± 75.0 |
9.1 ± 0.2 |
52.8 ± 15.8 |
23.5 ± 7.3 |
| 4 |
260 to 270 |
73.5 ± 10.1 |
254.8 ± 129.0 |
7.7 ± 0.6 |
16.0 ± 6.2 |
14.9 ± 6.4 |
| Condition |
Period of operation (d) |
EFFLUENT |
COD
(mg L-1) |
AB
(mg CaCO3 L-1) |
pH |
TDS
(mg S L-1) |
SO4-2
(mg S L-1) |
| 1 |
181 to 220 |
34.4 ± 10.9 |
353.9 ± 93.6 |
8.1 ± 0.1 |
0.0 ± 0.1 |
26.8 ± 7.3 |
| 2 |
221 to 246 |
26.5 ± 15.1 |
387.9 ± 49.6 |
7.9 ± 0.2 |
0.0 ± 0.1 |
35.2 ± 14.6 |
| 3 |
247 to 259 |
33.0 ± 7.8 |
389.5 ± 29.7 |
8.2 ± 0.2 |
0.0 ± 0.1 |
65.0 ± 14.5 |
| 4 |
260 to 270 |
27.2 ± 1.8 |
34.1 ± 88.3 |
6.7 ± 0.7 |
0.0 ± 0.0 |
33.8 ± 4.6 |
|
