Anionic PAM Emulsion for Oily Wastewater Separation and Clarification

Product Introduction

Oil droplets stabilized by surfactants or fine solids do not behave like normal suspended mineral particles. A flocculant cannot reliably replace the step that breaks the emulsion.

Once destabilized, oil-bearing solids and coagulant floc can be aggregated by APAM for DAF, settling, or filtration. The polymer must not be added with excessive shear that re-disperses the phase.

Anionic PAM emulsion for oily wastewater is applied after demulsification or coagulation to bridge separated oil-bearing solids and precipitate. Blufloc grades can support settling or flotation when chemical sequence and mixing are controlled.

Application Challenges

• Stable emulsions and surfactants
• Fine oil-bearing solids after coagulation
• Changing oil type, temperature, and pH
• Oil carryover caused by poor sequence or floc breakage

How the PAM Emulsion Works

After the emulsion is destabilized and droplets or solids carry suitable adsorption sites, very-high-molecular-weight APAM bridges them into separable floc. In DAF, the floc must attach to bubbles; in settling, it must be dense enough to sink.

Recommended Blufloc Grades

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

• Very-high molecular weight for post-demulsification bridging
• Suitability for settling or DAF screening
• Continuous emulsion dosing
• Oil- and water-based options
• Complete-sequence laboratory support

Application Process

1. Characterize free, dispersed, and emulsified oil along with TSS, pH, and temperature.
2. Optimize demulsifier, coagulant, and pH before APAM.
3. Add APAM last under rapid distribution and gentle floc growth.
4. Evaluate oil in water, TSS, floc behavior, sludge volume, and dewatering.
5. Maintain the same chemical order during scale-up.

Product Selection Guidance

EWA 7520 is a practical post-coagulation water-based screen. EA 6520 provides higher anionic charge and strong bridging. Choose based on the actual destabilized solids and separation device.

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

• Oil and grease in treated water
• TSS
• DAF or settling performance
• Sludge properties
• Total chemical cost

Troubleshooting Note

If no separate phase forms before APAM, revisit demulsification. If floc forms but oil carryover remains high, examine DAF recycle, bubble attachment, settling density, and shear rather than only polymer dose.

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 post-demulsification oily wastewater clarification, 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.

Frequently Asked Questions