Water-Based Paint Wastewater Treatment Solution in Vietnam

Fast Decolorization, Improved Sedimentation, and Better COD Reduction with Bluwat Chemicals

Water-based paint wastewater is often highly colored, colloidal, and difficult to settle. In this Vietnam case, Bluwat Chemicals applied a three-step solution using composite decoloring agent, pH adjustment, and PAM flocculation to transform pink paint wastewater into clear supernatant with dense settled sludge.

1. Customer Background

A mid-sized coatings manufacturer in Vietnam was producing water-based paint wastewater with strong pink coloration, high turbidity, and poor settling performance. The existing treatment process could not achieve stable clarification, and discharge compliance was becoming more difficult.

The wastewater contained dispersed pigments, fine suspended solids, and stable colloidal particles, making conventional coagulation insufficient. The client needed a practical and cost-effective treatment solution that could be integrated into the existing wastewater treatment system.

2. Treatment Process

3. Visual Result

After treatment, the wastewater changed from opaque pink to clear supernatant, while paint solids formed dense flocs and settled rapidly. This visual result clearly demonstrated the effectiveness of the combined decolorization and flocculation program.

4. Performance Data

5. Key Advantages of the Solution

• Fast and visible color removal
• Improved coagulation and settling efficiency
• Dense floc formation with lower sludge volume tendency
• Reduced COD compared with untreated wastewater
• Easy to apply in existing wastewater treatment systems

6. Why Bluwat Chemicals

Bluwat Chemicals is a professional manufacturer and exporter of water treatment chemicals, serving customers worldwide. With extensive experience in decolorization, coagulation, and flocculation, Bluwat provides customized solutions for difficult industrial wastewater, including paint, coating, textile, chemical, and dyeing wastewater.

Our laboratory team performs daily jar tests to help customers select the right treatment chemicals and optimize dosage, helping improve treatment efficiency while controlling operating cost.

Need a solution for paint wastewater treatment?

Contact Bluwat Chemicals for lab testing, product recommendation, and a customized treatment solution for your wastewater.