Is NPAM suitable for sand washing wastewater?
2026-04-14 10:59:19
Is NPAM suitable for sand washing wastewater?
Yes,Nonionic Polyacrylamide(NPAM)is very suitable for sand washing wastewater treatment,and is often one of the preferred flocculants for this scenario.
Reasons for good applicability
Sand washing wastewater mainly contains inorganic silt and fine sand particles with weak surface charge,so the neutral property of NPAM matches well.
NPAM relies on adsorption bridging to quickly agglomerate fine mud into large,dense flocs that settle rapidly,achieving clear water recycling.
It has strong salt and hardness resistance,stable in sand washing water with high calcium and magnesium ions,and not easily affected by water quality fluctuations.
The flocs formed are tight and not easily broken,which is conducive to subsequent sludge dewatering and mud cake stacking.
It performs well over a wide pH range,suitable for both neutral and weakly acidic sand washing wastewater.
Comparison note
For ordinary sand washing water:NPAM and APAM both work well.
When the water is acidic,contains more metal ions,or has high salinity:NPAM is usually more stable and effective than APAM.
In summary,NPAM is fully suitable and widely used in sand washing wastewater for sedimentation clarification and sludge dewatering.
References
GB/T 7714
Wang C,Li Y.Application Effect of Nonionic Polyacrylamide in Sand Washing Wastewater Treatment[J].Environmental Engineering,2020,38(6):112-115.
MLA
Wang,Chen,and Yan Li."Application Effect of Nonionic Polyacrylamide in Sand Washing Wastewater Treatment."Environmental Engineering,vol.38,no.6,2020,pp.112–115.
APA
Wang,C.,&Li,Y.(2020).Application effect of nonionic polyacrylamide in sand washing wastewater treatment.Environmental Engineering,38(6),112–115.
