Blufloc EWA 7520 Water-Based Anionic PAM Emulsion for Automatic Dosing
Product Introduction
EWA 7520 combines a water-based carrier with very-high-molecular-weight APAM. The format can simplify continuous liquid handling where the dosing skid is designed for this grade.
Automatic dosing only delivers consistent treatment when dilution water, flow pacing, mixing, residence time, and calibration are controlled. The product and equipment must be commissioned as one system.
Blufloc EWA 7520 is a water-based anionic PAM emulsion with very high molecular weight and medium anionic degree. It is designed for compatible automatic dosing systems in wastewater clarification, mining, sand washing, paper, and sludge applications.
Application Challenges
- Inconsistent solution strength from changing water flow
- Poor emulsion distribution at low dosing rates
- Pump turndown limits during variable plant load
- Assuming water-based formulation eliminates activation needs
How the PAM Emulsion Works
EWA 7520 provides medium anionic charge for adsorption and very-high molecular weight for bridging. Proper preparation exposes the polymer chains so they can aggregate fine mineral or coagulated solids without concentrated-product fish-eyes or localized overdosing.
Important: The suggested grades below are starting candidates, not a fixed prescription. Final selection and dosage require representative laboratory and plant trials.
Recommended Blufloc Grades
| Grade | Base | Molecular Weight | Charge | Suggested Screening Role |
|---|---|---|---|---|
|
EWA 7520 |
Water-based |
Very High |
Medium anionic |
Automatic dosing for clarification, mining, sand washing, paper, and selected sludge duties |
The product pages classify the cationic EC and EWC series as high molecular weight and the anionic EA and EWA grades as very high molecular weight. Exact commercial specification limits, active content, viscosity, shelf life, and preparation instructions should be confirmed on the current grade-specific TDS and order specification.
Product Advantages
- Water-based emulsion format
- Very-high molecular weight
- Medium anionic degree
- Suitable for compatible continuous dosing skids
- Technical support for commissioning and application trials
Application Process
- Verify storage temperature, pump materials, turndown, mixer, and dilution-water capacity.
- Commission the make-down sequence with clean water and the product-specific instructions.
- Calibrate neat-emulsion and water flows across the normal operating range.
- Link dose to process flow or solids load and confirm with routine tests.
- Document start-up, flushing, shutdown, spill, and troubleshooting procedures.
Product Selection Guidance
EWA 7520 is suited to sites seeking a water-based medium-anionic emulsion and very-high-molecular-weight bridging. Compare it with EA 6520 when high anionic degree or oil-based formulation may offer better process economics.
Compare candidates on active polymer mass and total operating cost. Neat-emulsion price per kilogram can be misleading if products differ in activity, preparation efficiency, dose, equipment throughput, cake or underflow quality, and downstream disposal cost.
Operating Indicators to Record
- Prepared-solution consistency
- Pump calibration
- Process water clarity
- Polymer active dose
- System uptime
Troubleshooting Note
If the plant result drifts while the raw water is stable, audit the dosing skid. Check flowmeters, dilution-water pressure, static mixer condition, tank turnover, injection quill, and line flushing.
Packaging, Storage, and Safe Handling
Standard supply options shown on the Blufloc PAM emulsion product pages are 25 kg containers, 200 kg plastic drums, and 1000 kg IBCs. Keep the package sealed in a cool, dry, ventilated area and protect it from direct sunlight, freezing, and excessive heat. Follow the grade-specific TDS and SDS for shelf life, handling limits, and transport classification. Polymer spills can make floors extremely slippery and should be contained and cleaned promptly.
Why Choose Bluwat Chemicals
- More than 25 years of water-treatment chemical manufacturing experience, supported by three modern production plants.
- The company website reports more than 800,000 tons delivered and exports to over 100 countries and regions.
- Factory-direct coordination for grade selection, batch documentation, packaging, and export logistics.
- Laboratory screening support using customer water or sludge samples, with recommendations based on the actual treatment objective.
- TDS, SDS, COA, and applicable certification documents can be supplied for the selected grade and destination market.
For EWA 7520 water-based automatic dosing, Bluwat can screen adjacent PAM emulsion grades, review preparation and dosing conditions, and help define a plant-trial plan using agreed performance indicators.
Quality Control and Technical Support
- Confirm the required grade specification and order documentation before production and shipment.
- Use representative customer samples to shortlist products under realistic pH, temperature, solids, water chemistry, and shear.
- Supply a clear make-down, dilution, dosing, and scale-up recommendation for the selected grade.
- Review plant-trial data and adjust charge level, dose, addition point, or mixing conditions when necessary.