What are the applications of Nonionic Polyacrylamide?

Nonionic Polyacrylamide(NPAM)is a neutral high-molecular-weight polymer,widely used in water treatment,mining,papermaking,oilfield,textile,construction,agriculture and other fields.Its main applications are as follows:

1.Water and Wastewater Treatment

Used as an efficient flocculant for industrial wastewater and municipal sewage treatment,especially suitable for acidic or weakly acidic wastewater.

Assists in sedimentation and clarification of suspended solids,organic colloids,and fine particles.

Applied in sludge dewatering to improve filtration efficiency and reduce sludge moisture content.

Used in drinking water purification,often used together with inorganic coagulants to improve clarity.

2.Mining and Mineral Processing

Used for tailings water clarification and solid-liquid separation in ore dressing,coal washing,sand and gravel washing.

Accelerates the sedimentation of mineral slurry,improves the recovery rate of concentrate,and recycles process water.

Suitable for flocculation treatment of ore wastewater with high hardness and high salt content.

3.Papermaking Industry

As a retention and drainage aid to improve the retention rate of fibers and fillers and speed up paper machine operation.

Used as a paper dry strength agent to enhance tensile strength,folding resistance and surface smoothness.

Assists deinking in waste paper recycling,flocculating ink particles and improving pulp cleanliness.

4.Oil and Gas Field Development

Added in drilling fluids to adjust viscosity,carry cuttings,stabilize well walls and reduce fluid loss.

Used for oily wastewater treatment to separate oil droplets and suspended impurities.

Applied in profile control and water shutoff operations to improve oil recovery efficiency.

5.Textile Industry

Used as a textile sizing agent to enhance yarn strength,reduce hairiness and breakage rate during weaving.

Serves as a finishing agent to improve fabric antistatic property,smoothness and wear resistance.

Used for treatment of printing and dyeing wastewater to remove suspended matter and reduce chroma.

6.Construction and Geotechnical Engineering

Used in chemical grouting for dams,foundations and tunnels to plug water and reinforce soil.

As a binder or modifier for mortar and concrete to improve workability and strength.

Used for sand fixation and slope protection to reduce water and soil loss.

7.Agriculture

Used as a soil conditioner to improve soil aggregate structure,enhance water retention and fertilizer retention capacity.

Applied in desert control and sand fixation projects to form a protective layer on sand surface.

Used for irrigation water purification to reduce sediment blockage.

8.Other Industrial Uses

Used in sugar industry to clarify sugarcane juice and speed up sedimentation of impurities.

Applied in electroplating,leather,printing and other wastewater decolorization and purification.

Used as an adhesive additive,thickener and dispersant in daily chemical and coating industries.

References

GB/T 7714

Yang Y,Ren Z,Wang D.Application Progress of Nonionic Polyacrylamide in Industrial Water Treatment[J].Technology of Water Treatment,2019,45(3):11–15.

MLA

Yang,Yu,et al.“Application Progress of Nonionic Polyacrylamide in Industrial Water Treatment.”Technology of Water Treatment,vol.45,no.3,2019,pp.11–15.

APA

Yang,Y.,Ren,Z.,&Wang,D.(2019).Application progress of nonionic polyacrylamide in industrial water treatment.Technology of Water Treatment,45(3),11–15.