BWD-01 Water Decoloring Agent for Textile Dyeing and Garment Finishing Effluent in Colombia
Product Overview
Textile wet processing in Colombia does not create one uniform wastewater. Fiber type, dye class, shade depth, washing recipe and finishing chemistry can change the color and charge demand from one production batch to the next.
BWD-01 supplies strong cationic charge to destabilize negatively charged soluble dyes and fine color-bearing particles. It is especially relevant to reactive, direct, acid and pigment color systems. The objective is not merely to make the sample look clearer, but to produce flocs that can be separated reliably by sedimentation or dissolved-air flotation.
Textile Wastewater Problem in Colombia
The central treatment problem is that mixed batches and finishing chemicals create persistent color and variable clarification performance. Conventional inorganic coagulation may remove suspended solids but leave a visible soluble-color fraction. Operators may then increase coagulant dose, creating more sludge without proportional color improvement.
Why the Problem Occurs
- Several fiber and garment processes may share one treatment system.
- Dissolved dyes and pigment particles require different coagulation responses.
- Small concentrated discharges can be hidden in the daily average.
BWD-01 Treatment Solution
Use production-linked sampling and BWD-01 jar testing to create practical dosing ranges for the plant's main fiber and finishing categories.
The selected program should be based on actual wastewater rather than a universal dose. A controlled jar test identifies the point where charge neutralization, floc formation, separation speed and sludge production are balanced. PAC can be tested before or after BWD-01, but the two products must be prepared and dosed separately.
Technical Specifications
| Property | BWD-01 Specification |
| Chemical name | Quaternary ammonium cationic polymer |
| Appearance | Colorless to yellowish translucent liquid |
| Solid content | 50% min |
| Specific gravity at 20 C | 1.1-1.3 |
| pH value, 30% solution | 3-6 |
| Viscosity at 25 C | 30-300 cps |
| Solubility | Soluble with water at any rate |
| Storage temperature | 0-35 C |
| Standard package | 30 kg or 250 kg plastic drum; 1250 kg IBC |
Recommended Application Scenarios
- Cotton and blended-fabric dyeing wastewater.
- Garment washing and fashion-finishing effluent.
- Printing and pigment-bearing wastewater after screening.
How BWD-01 Works
- Charge neutralization: cationic groups interact with negatively charged reactive, direct, acid and pigment color systems and colored colloids.
- Destabilization: reduced electrostatic repulsion allows dissolved or finely dispersed color bodies to associate.
- Floc formation: the destabilized contaminants form visible aggregates; PAC may strengthen or densify flocs where testing supports it.
- Solid-liquid separation: the resulting flocs are removed by sedimentation or air flotation, producing clearer treated water.
How to Choose and Test BWD-01
- Sample concentrated cleaning or batch dumps.
- Separate dissolved-color and suspended-solid observations.
- Choose the dose that meets quality requirements with stable floc separation.
Use untreated and current-treatment controls in every jar-test series. Record raw-water pH, true or apparent color, CODcr, turbidity, temperature and production source. Photographs are useful, but analytical results and sludge behavior are required for a defensible selection.
Recommended Application Procedure
- Collect a representative wastewater sample after appropriate screening and equalization.
- Prepare several BWD-01 working solutions by diluting the product with 10 to 40 times clean water.
- Use pH 7.5-8.0 as the TDS starting range for improved performance, then test nearby values if necessary.
- Dose BWD-01 into the wastewater and mix thoroughly for several minutes.
- Where color and CODcr remain high, test PAC before and after BWD-01 in separate beakers. Do not premix the chemicals.
- Allow the flocs to settle or evaluate them by dissolved-air flotation, matching the site's full-scale process.
- Compare final color, CODcr, turbidity, floc strength, separation time, sludge volume and total treatment cost before scale-up.
Expected Treatment Results
The BWD-01 TDS reports typical decolorization of approximately 50%-99% and CODcr reduction of approximately 50%-80% in suitable applications. These are reference ranges, not guaranteed results. Actual performance depends on dye class, concentration, auxiliaries, pH, mixing, chemical sequence and separation equipment.
Compared with a high-dose inorganic-only program, BWD-01 may provide faster flocculation and settling and may reduce the inorganic contribution to sludge. The comparison should use dry solids, dewatering behavior and disposal cost where sludge reduction is a project objective.
Bluwat Manufacturing Advantages
- Manufacturer since 2000 with more than 25 years of water-treatment chemical production and export experience.
- Three production bases supporting stable supply, batch control and multiple packaging options.
- Products exported to more than 80 countries and used by over 5,000 industrial customers.
- Quality and environmental systems including ISO 9001 and ISO 14001, with ZDHC-conformant BWD product support.
- Routine control of appearance, solid content, specific gravity, pH, viscosity and solubility, supported by batch COA.
- Free sample availability and technical support for jar-test design, dosage comparison and full-scale trial planning.
- Standard BWD-01 packaging in 30 kg and 250 kg plastic drums or 1250 kg IBC containers.
For customers in the Americas, Bluwat supports sample evaluation, container-load planning, stable batch specifications and technical communication for distributors, textile groups and individual mills.
Frequently Asked Questions
Why can the daily composite sample miss a treatment problem?
A short, concentrated batch dump may be diluted in the daily composite. Peak samples help identify why outlet color temporarily increases.
Is BWD-01 only for large textile mills?
No. It can be diluted and metered in different plant sizes. Small plants still need representative testing, suitable mixing and reliable feed control.
What is the recommended BWD-01 dilution and wastewater pH?
The TDS recommends dilution with 10 to 40 times water and identifies wastewater pH 7.5-8.0 as a useful starting range for better results. The final dilution, pH and dose must be confirmed with the actual effluent.
Can BWD-01 be mixed directly with polyaluminum chloride?
No. BWD-01 and PAC should be prepared and dosed separately. PAC may be added before or after BWD-01 depending on the flocculation test and the treatment process, but the concentrates should not be premixed.
How should the final BWD-01 dosage be selected?
Use a jar test with representative wastewater. Compare color, CODcr, turbidity, floc size, separation time and sludge volume. The best operating dose is the lowest stable dose that meets the plant's complete treatment objective.