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Cotton Yarn and Package Dyeing
Suitable for reactive and direct-dye wastewater from cotton yarn, package dyeing and rinsing operations.
Bluwat BWD-01 Water Decoloring Agent
Textile Wastewater Treatment in Uzbekistan
A practical liquid decoloring solution for cotton yarn dyeing, reactive-dye rinses and integrated textile complexes, designed to support stable commissioning, repeatable jar testing and scalable local operation.
50% minSolid content
pH 7.5-8.0Recommended starting range
30 / 250 / 1250 kgStandard packaging options
01
Product Overview
Textile wet processing in Uzbekistan 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 and direct dyes used on locally processed cotton.
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.
02
Textile Wastewater Problem in Uzbekistan
Expanding integrated production increases the amount of colored rinsing and dyeing wastewater requiring stable local treatment.
Conventional inorganic coagulation may remove suspended solids but leave a visible soluble-color fraction. Operators may then increase coagulant dosage, creating more sludge without proportional color improvement.
Why the Problem Occurs
More cotton is processed through dyeing and finishing rather than exported only as fiber or yarn.
Reactive-dye rinses contain soluble unfixed color and high auxiliary loads.
New treatment plants need operating methods that remain practical for local teams.
03
BWD-01 Treatment Solution
Use BWD-01 as a simple liquid decolorant with documented dilution, pH control and jar-test steps that can be repeated as production expands.
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.
04
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 |
Technical note: Values are based on the Bluwat BWD-01 TDS. Confirm the supplied batch with its Certificate of Analysis and consult the SDS for handling and shelf-life details.
05
Recommended Application Scenarios
Knitted and Woven Cotton Fabrics
Can support color removal from reactive-dye effluent generated by integrated fabric processing.
Integrated Textile Complexes
Can be evaluated for combined dyeing, washing and finishing wastewater during commissioning or production expansion.
06
How BWD-01 Works
Cationic groups interact with negatively charged reactive and direct dyes used on locally processed cotton and colored colloids.
Reduced electrostatic repulsion allows dissolved or finely dispersed color bodies to associate.
Destabilized contaminants form visible aggregates; PAC may strengthen or densify the flocs where testing supports it.
The resulting flocs are removed by sedimentation or air flotation, producing clearer treated water.
07
How to Choose and Test BWD-01
Build operating ranges during commissioning using real production samples.
Confirm mixing time and chemical-feed capacity before scale-up.
Train operators to reassess dosage after new dye recipes are introduced.
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.
08
Recommended Application Procedure
Collect representative wastewaterTake the sample after appropriate screening and equalization.
Prepare BWD-01 working solutionsDilute the product with 10 to 40 times clean water.
Screen wastewater pHUse pH 7.5-8.0 as the TDS starting range, then test nearby values if necessary.
Dose BWD-01Add it to the wastewater and mix thoroughly for several minutes.
Test PAC sequenceWhere color and CODcr remain high, test PAC before and after BWD-01 in separate beakers. Do not premix the chemicals.
Evaluate separationAllow flocs to settle or evaluate them by dissolved-air flotation, matching the full-scale process.
Compare final performanceReview color, CODcr, turbidity, floc strength, separation time, sludge volume and total treatment cost before scale-up.
09
Expected Treatment Results
The BWD-01 TDS reports typical performance ranges in suitable applications. These are reference values rather than guaranteed results.
50%-99% Typical decolorization reference range
50%-80% Typical CODcr reduction reference range
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. Where sludge reduction is a project objective, compare dry solids, dewatering behavior and disposal cost.
10
Bluwat Manufacturing Advantages
Manufacturer since 2000 with 25+ years of production and export experience
Three production bases supporting stable supply and batch control
Products exported to 80+ countries
Used by 5,000+ industrial customers
ISO 9001 and ISO 14001 management systems
ZDHC-conformant BWD product support
Routine quality control supported by batch COA
Free samples and jar-test support
30 kg, 250 kg drum and 1250 kg IBC packaging
For Central Asian textile markets, Bluwat supports drum and IBC shipments, production planning for regular consumption, and remote jar-test review using customer wastewater data and treatment photographs.
11
Frequently Asked Questions
Is BWD-01 suitable for a newly commissioned textile ETP?
Yes, it can be screened during commissioning. Use production samples, not clean-water simulations, and establish baseline data for color, CODcr, pH and settling.
What is important when scaling from a jar test to a new plant?
Maintain the chemical order, relative mixing intensity and contact time. Start the full-scale trial conservatively and verify treated water before increasing the continuous feed.
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. Final dilution, pH and dose must be confirmed using 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 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.