Applications
Mainly used for flocculation, sedimentation, and clarification of various industrial wastewaters, such as:
Steel plant wastewater
Electroplating plant wastewater
Metallurgical wastewater
Coal washing wastewater
Sewage treatment and sludge dewatering
Clarification and purification of drinking water
Product Properties
Appearance: White granules
Solid Content: ≥ 88%
Sieve Residue: ≤ 2%
Molecular Weight: 6 – 25 million
Charge Density: 10 – 40 (Mole %)
Degree of Hydrolysis: 10 – 35%
Dissolving Time: ≤ 60 minutes
Odor: Odorless
Thermal Stability: Decomposes when temperature exceeds 120°C
Corrosivity: Non-corrosive
Hygroscopicity: Solid form is hygroscopic
Key Features & Performance
1.Excellent Solubility: Completely dissolves even in cold water.
2.High Efficiency at Low Dosage: Significant flocculation effects are achieved with minimal amounts. Generally, adding 0.01~10ppm (0.01~10g/m³) is sufficient.
3.Synergistic Effects: Shows superior results when used simultaneously with inorganic flocculants (e.g., Polyferric Sulfate, Polyaluminum Chloride, iron salts).
Product Description
Anionic Polyacrylamide (APAM) is a water-soluble high-molecular-weight polymer. It appears as white or yellowish granules or powder with a molecular weight ranging from 8 to 25 million. The polymer chain contains negatively charged groups, such as carboxyl groups, which enable the effective removal of positively charged impurities in water, thereby improving water quality. Through adsorption, charge neutralization, and bridging effects, it achieves suspended particle flocculation, providing clarification, sedimentation acceleration, and filtration promotion.
Dissolution Methods
1.Using Automatic High-Dispersion Dissolver: Flocculants must be dispersed and dissolved cautiously to avoid "fish-eyes" (undissolved particles coated in a gel layer) caused by rapid surface dissolution.
2.Manual Dissolution Steps: Fill the tank to half capacity with water, start the stirrer, and slowly pour the weighed flocculant into the edge of the vortex. It is critical that the flocculant is fully mixed with the solvent before the viscosity increases. Continue stirring until the high-molecular-weight aggregates are completely dissolved.
Usage Guidelines
1.Concentration: Prepare a 0.1% aqueous solution using neutral water free of salt impurities.
2.Mixing: Sprinkle the product evenly into stirring water at 100–300 rpm. Moderate heating (< 60°C) can accelerate dissolution.
3.pH Adjustment: Adjust the pH value of the treated liquid to maximize the product’s effectiveness.
4.Application: Accelerate mixing during initial dosing, then slow down stirring once flocs appear to encourage growth and settling.
Precautions
1.Do Not Apply Directly: Granular flocculants must be dissolved in water before treating sewage.
2.Water Quality: Use clean tap water (5°C–40°C). Temperatures above 40°C will degrade the polymer and reduce effectiveness. Avoid using strong acids, alkalis, or high-salt water for preparation.
3.Recommended Concentration: Generally 0.1%–0.3% (0.1g–0.3g per 1 liter of water).
4.Safety: Operators should wear protective equipment; wash skin thoroughly after contact.
5.Floor Safety: Rinse the site frequently with water to prevent slipping accidents.
6.Storage: Store in a sealed container in a cool, dry place.
Packaging & Storage
Packaged in 25kg plastic-lined woven bags or paper-plastic composite bags. Protect from heat and moisture during storage and transport. Do not stack more than 20 layers. The effective shelf life is 2 years. Standard particle size is 20-80 mesh.
Q: Can I add the granules directly into the wastewater?
A: No, granular APAM cannot be added directly to sewage. It must first be dissolved in clean water (such as tap water) to create a 0.1%–0.3% concentration solution. The water temperature should ideally be between 5°C and 40°C to avoid polymer degradation.