Table 4 Sludge characteristics for textile wastewater during treatment by EC
Elements | Sludge (mg/100 g) | |
|---|---|---|
Floated | Decanted | |
Na | 4.6 | 18.4 |
K | 0 | 0.5 |
Ca | 0.8 | 0.9 |
P | 0.3 | 0.1 |
Mg | 0.8 | 0.5 |
Cu | 0.1 | 0.1 |
Mn | 0.8 | 0.3 |
Fe | 24.0 | 16.2 |
Zn | 2.0 | 0.1 |
Cd | 5.9 | 0 |
Pb | 1.1 | 0.3 |
Ni | 179.0 | 55.7 |
Cr | 95.9 | 115.0 |
Ba | 0 | 0 |
Co | 0.5 | 0.1 |
As | 0.47 | 0 |
Se | 0 | 0 |
Al | 23.2 | 9.6 |
Mo | 10.0 | 4.7 |
Hg | 0 | 0 |