Anionic Polyacrylamide
Anionic Polyacrylamide(APAM)is a water-soluble,high-molecular-weight linear polymer,copolymerized from acrylamide and anionic monomers(e.g.,sodium acrylate).It carries negatively charged carboxylate groups(-COO⁻)along its molecular chain,making it a highly effective anionic flocculant and rheology modifier.
Core Properties
Physical Form:White granular or powder solid,odorless,with high water solubility.
Molecular Weight:Typically ranges from 6 to 20 million,customizable for specific applications.
Charge Density:Moderate to high(10%–40%),determined by the degree of hydrolysis.
pH Compatibility:Performs optimally in neutral to alkaline conditions(pH 4–14).
Key Advantages:
Powerful Flocculation:Forms large,dense flocs by bridging particles and neutralizing positive charges.
High Efficiency:Effective at very low dosages(ppm level),reducing operational costs.
Excellent Solubility:Dissolves readily in cold and hot water.
Thermal Stability:Stable under a wide range of temperatures.
Synergy:Works effectively with inorganic coagulants(e.g.,PAC,ferric chloride).
Primary Industrial Applications
Wastewater&Water Treatment
Industrial Effluents:Ideal for treating wastewater with high inorganic solids(mining,steel,metallurgy,coal washing)by accelerating sedimentation.
Municipal Water:Used as a flocculant/coagulant aid for drinking water purification,effectively removing turbidity.
Sludge Dewatering:Improves dewatering efficiency,producing drier sludge cakes and reducing disposal volume.
Oil&Gas Recovery
Drilling Fluids:Acts as a viscosifier,fluid loss controller,and shale stabilizer in water-based drilling muds.
EOR(Enhanced Oil Recovery):Improves sweep efficiency by increasing water viscosity and displacing more oil from reservoirs.
Paper Manufacturing
Retention&Drainage Aid:Significantly improves retention of fine fibers and fillers,while accelerating dewatering on the paper machine.
Coating Thickener:Provides stable viscosity and uniform pigment dispersion in paper coatings.
Mining&Mineral Processing
Tailings Treatment:Efficiently flocculates mineral concentrates and tailings,speeding up solid-liquid separation and water recycling.
Agriculture&Soil Conditioning
Soil Stabilization:Prevents soil erosion and crusting by binding soil particles together,improving water infiltrationARS.
Safety&Standards
Safety:Non-toxic,non-corrosive,and environmentally safe when fully polymerized.
Compliance:Meets international standards including GB,ISO,and API specifications for various industrial uses.
