Turkish Paper Mill Achieves 93% Color Removal with CW-05 Cationic Flocculant Wastewater Treatment Solution

Project Overview

A mid-sized recycled paper mill in Turkey producing corrugated medium and testliner from recovered paper faced significant wastewater challenges. Processing approximately 300 tons of waste paper daily, the facility generated around 800 cubic meters of colored effluent daily. Turkish regulations required effluent to meet strict color and COD limits before discharge.

Client Background

The client operates in the Marmara region with over 15 years of operation in recycled cardboard and kraft paper production. Their existing treatment system combined PAC and ferric sulfate with anionic polyacrylamide, which struggled to handle increasing color loads from modern printed packaging waste containing water-based inks and synthetic dyes.

The Challenge

• Persistent coloration: Treated effluent at 150-200 Pt-Co units, well above the 80-unit discharge limit
• High chemical usage: PAC at 600-900 ppm plus 3-5 ppm anionic PAM, driving up operational costs
• Inconsistent results: Treatment efficiency fluctuated depending on the grade of recovered paper processed
• Poor sludge dewatering: Inorganic sludge retained 75-80% moisture, increasing disposal costs
• COD borderline: Post-treatment COD oscillated between 180-280 mg/L against a 200 mg/L limit

Our Solution: Cleanwater CW-05

After on-site assessment and bench-scale testing, our engineers proposed Cleanwater CW-05, a dicyandiamide formaldehyde resin-based cationic polymer formulated for color removal in paper effluents. Its high cationic charge density neutralizes negatively charged colloidal particles responsible for color and COD.

CW-05 Product Specifications

CW-05 Key Advantages

• Manufacturer direct supply with factory experience since 1985
• Free sample available for customer evaluation and testing
• Dual function: removes color and reduces COD simultaneously
• Strong decolorization rate of 85-95% across various dye types
• Faster sedimentation and better flocculation than conventional coagulants
• Non-polluting: no aluminum, chlorine, or heavy metal ions

CW-05 was integrated before the Dissolved Air Flotation (DAF) unit at 100-200 ppm with reduced PAC at 200-300 ppm, achieving superior results while cutting total chemical consumption.

Wide Application Coverage

CW-05 is extensively used for wastewater treatment in textile, printing, dyeing, paper-making, mining, and ink industries. It is particularly effective for color removal treatment of high-colority wastewater from dyestuffs plants, and is suitable for treating wastewater containing activated, acidic, and disperse dyestuffs.

Implementation Process

1. Wastewater profiling: Two-week characterization of effluent across production batches
2. Jar testing: Optimization of CW-05 dosage, PAC ratio, and mixing conditions
3. Trial operation: Two-week continuous trial on one production line
4. Full deployment: Dosing pumps integrated with DAF control system
5. Staff training: Operator training on chemical handling and dosage adjustment
6. Ongoing optimization: Monthly technical reviews for seasonal raw material variations

Results and Performance Data

Key Benefits Achieved

• Regulatory compliance: Effluent color consistently below 80 Pt-Co, COD safely under 200 mg/L
• 35% chemical cost reduction: Lower combined dosage and elimination of anionic PAM
• Improved sludge dewatering: Denser flocs reduced moisture from 78% to 62%, cutting disposal tonnage by 25%
• Stable performance: Consistent results across all recovered paper grades
• Simplified inventory: Reduced treatment chemicals from three to two

Client Testimonial

"Cleanwater CW-05 solved our long-standing color compliance problem. We meet discharge limits consistently while saving significantly on chemicals. The technical team's support was very professional, and we have recommended Cleanwater to other mills in our industry association."

About Cleanwater Chemicals

Yixing Cleanwater Chemicals Co., Ltd. is located in Yixing, Jiangsu Province, China, adjacent to Shanghai — the economic, financial, and trade center of China. Our strategic location provides convenient transport connections with customers at home and abroad.

Our products, with strong capacities of decolorization and removal of COD and BOD, are mainly used for wastewater treatment across diverse industries including textile, printing, dyeing, paper-making, mining, and ink. In addition, our flocculant agents also serve as effective retention agents in the production process of paper and pulp.

Guided by our principle of "promptness, action, quality, and credit", we are committed to satisfying the demands of both domestic and international customers through high-quality products, reasonable pricing, prompt delivery, and consummate service.

Contact Information

• Website: water-treatmentchemical.com
• Email: joy@holly-tech.net
• WhatsApp: +8618061580037

Conclusion

The implementation of Cleanwater CW-05 at this Turkish recycled paper mill demonstrates outstanding performance in paper industry effluent treatment. Achieving 93% color removal, 60% COD reduction, and 35% chemical cost savings, CW-05 proved to be a cost-effective alternative to conventional PAC/PAM combinations. This case validates Cleanwater Chemicals' expertise in delivering targeted water treatment solutions to the global paper and pulp industry.