Table 1.
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 |
Figure 1.
Impact of wastewater pH and H2O2 dosage on effectiveness of decrease of COD
Figure 2.
Impact of H2O2 dosage on effectiveness of decrease of COD
Figure 3.
Impact of Fe2+/H2O2 mass ratio on effectiveness of decrease of COD
Figure 4.
Impact of time of reaction on effectiveness of decrease of COD
Figure 5.
The change of the concentration of sulfate and chloride ions in wastewater before and after the purification process