Why use Anionic Polyacrylamide in wastewater treatment?
2026-04-14 10:16:01
Anionic Polyacrylamide(APAM)is the flocculant of choice for industrial and municipal wastewater treatment because it offers unmatched efficiency,versatility,and cost-performance in removing contaminants.
Core Reasons for Usage
Exceptional Flocculation Efficiency
It rapidly aggregates suspended solids,colloids,and organic matter into large,dense,and fast-settling flocs.This drastically accelerates solid-liquid separation,reducing settling time and improving clarification.
Superior Solid-Liquid Separation
APAM forms strong flocs that trap fine particles and organic pollutants.This results in a clearer effluent(lower turbidity,lower COD)and significantly reduces sludge volume,making subsequent dewatering(filter presses,centrifuges)much easier and cheaper.
Broad Compatibility&Robustness
APAM works effectively over a wide pH range(pH 5–12),especially stable in neutral and alkaline conditions.It maintains performance in hard water,high-salinity environments,and systems with high levels of dissolved salts,which often cause other flocculants to fail.
Cost-Effective at Low Dosage
Due to its high molecular weight and strong adsorption,APAM is effective at very low concentrations(ppm levels).This minimal dosage translates to significant savings on chemicals and reduces overall operational costs.
Versatility Across Industries
It is suitable for treating a diverse range of wastewaters,including:
Industrial Wastewater:Manufacturing,chemical,food processing,textile,printing and dyeing,mining,and coal washing.
Municipal Sewage:Primary and secondary sludge dewatering,secondary clarification.
River/Lake Water:Algae removal,turbidity reduction for raw water intake.
Enhanced Oil Recovery(EOR)&Process Water
In the oil and gas industry,APAM is used in wastewater treatment for produced water and as a polymer flood agent for enhanced oil recovery,thanks to its thickening and mobility control properties.
References(Google Scholar)
GB/T 7714
Sun X,Li Y,Zhang Q.Efficiency evaluation of anionic polyacrylamide in industrial wastewater treatment[J].Environmental Engineering,2022,40(6):88-93.
MLA
Sun,Xiaodong,et al."Efficiency Evaluation of Anionic Polyacrylamide in Industrial Wastewater Treatment."Environmental Engineering,vol.40,no.6,2022,pp.88-93.
APA
Sun,X.,Li,Y.,&Zhang,Q.(2022).Efficiency evaluation of anionic polyacrylamide in industrial wastewater treatment.Environmental Engineering,40(6),88-93.
