Water chemicals
High polychromatic agent

| Before processing | After processing | ρ(Flocculant)/ mg·L-1 |
| Black turbid | Colorless clear solution |
PAM:2 Composite poly iron:500 High polychromatic agent:100 |
| PH:14 | PH:7.5 | |
| COD:2000mg/L | COD:1500mg/L |
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