APAM Polyacrylamide Flocculant Emulsion for Sand Washing and Aggregate Wastewater Recycling
Product Introduction
Sand and aggregate plants produce large water flows with abrasive mineral solids and variable clay content. Storm events and feed changes can rapidly increase turbidity and overwhelm settling ponds or compact clarifiers.
Emulsion polymer is attractive where fast make-down and automated dosing are needed, but the system must be protected from grit and calibrated across large flow swings.
APAM emulsion for sand washing wastewater aggregates clay, silt, and ultrafine mineral particles for faster settling and water recycling. Blufloc oil-based and water-based grades support fixed and compact automatic dosing systems.
Application Challenges
- High clay and silt load
- Short settling time in compact systems
- Variable raw feed and rainfall dilution
- Abrasion and plugging around dosing equipment
How the PAM Emulsion Works
Very-high-molecular-weight APAM bridges fine mineral particles into rapidly settling floc. Anionic charge supports chain extension in many mineral-water systems. Proper pre-dilution prevents localized overdosing and improves distribution across high flow.
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 | Convenient candidate for compact automatic dosing |
| EA 6520 | Oil-based | Very High | High anionic | Strong candidate for clay-rich or demanding settling |
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
- Fast make-down for variable plant flow
- Strong fine-clay bridging
- Potential for clearer recycled wash water
- Oil- and water-based choices
- Support for fixed and mobile clarification systems
Application Process
- Sample during representative feed and high-clay conditions.
- Measure flow, TSS, clay content, pH, and water recycle ratio.
- Screen dose with realistic rapid mix and settling time.
- Calibrate polymer flow to plant water flow or solids load.
- Protect the dosing system from grit, weather, freezing, and direct sunlight.
Product Selection Guidance
EWA 7520 is a practical water-based option for compact systems. EA 6520 should be included for high-clay feed or when stronger anionic bridging improves settling at lower active dose.
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
- Settling time
- Recycled-water turbidity
- Sludge density
- Polymer per ton feed or volume
- Clarifier throughput
Troubleshooting Note
If treatment fails during storms, verify whether dose control follows water flow, solids load, or both. A fixed pump setting may underdose peak TSS and overdose diluted flow.
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 sand washing, aggregate fines, and water recycling, 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.