Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
The physico-chemical characteristics of wastewater
| Parameter | Unit | Value |
| pH | – | 6.0 |
| Total suspended solids (TSS) | mg/L | 57 |
| Chemical oxygen demand (COD) | mgO2/L | 4045 |
| Non-ionic surfactants (NS) | mg/L | 245 |
| Cu | mg/L | <0.05 |
| Zn | mg/L | 0.10 |
| Ni | mg/L | <0.1 |
| Cl- | mg/L | 70 |
| SO4 2- | mg/L | 51 |