Why PAC + PAM Is Not Enough for Wastewater Decolorization
The Common Problem in Industrial Wastewater Treatment
In many wastewater treatment systems, especially in textile, dyeing, and chemical industries, operators rely on a simple process:
PAC (coagulant) + PAM (Flocculant)
At first glance, this seems sufficient. But in reality, many plants still face:
- Persistent color in treated water
- High residual COD
- Unstable treatment results
π The question is: Why does coagulation + flocculation fail in color removal?
The Hidden Challenge: Dissolved Dye Molecules
The core issue is not particles β it is dissolved color molecules.
PAC works by destabilizing suspended solids. PAM helps form flocs and accelerate settling.
However:
π Neither of them is designed to remove soluble dyes effectively.
This is why:
- Water may settle
- Sludge may form
- But color remains
The Correct Approach: Add the Missing Step
To Achieve effective decolorization, the process must include adedicated color removal stage.
β Recommended Treatment Sequence:
Breaks down dye molecules and neutralizes color
Destabilizes particles and improves aggregation
Forms large, dense flocs for rapid settling
What Makes BWD-01 Different
Bwd-01 Water Decoloring Agent is aquaternary ammonium cationic polymer, specifically designed to target high-color wastewater.
Unlike conventional chemicals, it directly interacts with:
- Reactive dyes
- Acid dyes
- Disperse dyes
- Direct dyes
β Efficient color removal before flocculation
β Improved performance of PAC and PAM
β Faster clarification and cleaner effluent
Performance Highlights
Based on actual applications and product data:
- Color removal efficiency: up to 99%
- COD reduction: up to 80%
- Fast sedimentation and strong floc formation
- Lower sludge production
- No heavy metals or harmful residues
Where This Solution Works Best
This treatment strategy is particularly effective for:
- Textile and dyeing wastewater
- Pigment and ink wastewater
- Paper and pulp effluent
- Chemical industry wastewater
- Landfill leAchate
In these applications, color is often the most difficult parameter to remove.
Practical Application Guide
Recommended usage:
β οΈ Important:
- Do not mix BWD-01 directly with PAC before dosing
- Optimize dosage through jar testing
Product Specifications (Quick Overview)
About Bluwat Chemicals
Bluwat Chemicals is a professional manufacturer of Water Treatment Chemicals, with over 25 years of experience and exports to more than 80 countries.
We provide:
- Factory-direct supply
- Customized chemical solutions
- Free laboratory jar testing
- Technical support for multiple industries