Industry Characteristics
Daily chemical wastewater comes from detergent, shampoo, and cosmetic manufacturing. The biggest challenge lies in surfactants and unstable water quality.
PAC is used to stabilize influent conditions before biological treatment.
Key Treatment Difficulties
- High surfactant concentration
- Oil and grease contamination
- Strong fluctuations in COD
- Foam formation in bioreactors
How PAC Improves System Stability
PAC removes:
- Suspended solids
- Emulsified oils
- Partial surfactants
This reduces COD from 11,000 mg/L to about 2,500 mg/L, protecting downstream biological systems.
Recommended Application Strategy
- PAC dosage: 0.2–0.4‰
- Used with coagulation–sedimentation
- Foam control becomes easier
Conclusion
PAC is essential for handling complex daily chemical wastewater. By reducing organic load and stabilizing influent quality, PAC ensures long-term biological treatment performance.
