Product Overview

 

Anionic Polyacrylamide (APAM) is a high-molecular-weight water-soluble linear polymer. It functions primarily as a flocculant and coagulant aid in liquid-solid separation processes. By neutralizing surface charges on suspended particles and bridging across multiple particles, APAM accelerates settling velocities and improves sludge dewatering efficiency in industrial and municipal fluid streams.


Supplied as free-flowing white granules or stable liquid emulsions, Ecolink APAM is synthesized via aqueous solution polymerization, ensuring uniform chain length distribution and predictable performance in continuous dosing systems.

 

 
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Product Specifications

 

Technical Parameter

Test Method / Standard

Specification Range

Appearance

Visual

White free-flowing granule

Solid Content (%)

GB/T 12014

>= 88.0

Molecular Weight (Million Daltons)

Viscometry

12.0 - 25.0 (Customizable)

Degree of Hydrolysis (%)

Titration

15.0 - 35.0 (Adjustable)

Dissolution Time (min)

Laboratory Stirrer (20°C)

<= 60 (Complete dissolution, no fish-eyes)

Residual Monomer (%)

HPLC

< 0.05

pH Value (0.1% aqueous solution)

PH Meter

6.0 - 8.0

Bulk Density (g/cm3)

ISO 60

0.60 - 0.75

 

 
 
Key Features

High Molecular Chain Extension:

Engineered molecular architecture maximizes adsorption bridging sites on suspended solids, forming dense, shear-resistant flocs.

Rapid Dissolution Kinetics:

Treated with specialized surface-active agents to prevent agglomeration, enabling fast wetting and complete dispersion in automated makeup units.

Low Residual Monomer Level:

Controlled polymerization keeps free acrylamide monomers below 0.05%, complying with stringent municipal discharge and environmental regulations.

Broad pH Adaptability:

Maintains structural stability and charge density across a working pH range of 4.0 to 10.0.

 

 

Papermaking Dispersant

 

Applications

PRIMARY INDUSTRIAL APPLICATIONS:


Municipal Wastewater: Secondary effluent clarification & aerobic sludge mechanical dewatering.


Mining & Mineral Washing: Tailings thickener underflow concentration & coal slime water clarification.


Industrial Effluents: Pulp & paper mill wastewater, steel mill rolling wastewater, and chemical scrubber blowdown treatment.


Enhanced Oil Recovery (EOR): Polymer flooding viscosity modifier for permeability profile control.

 

Product Selection Guide

 

Selecting the correct grade of Anionic Polyacrylamide requires matching the polymer's charge density and molecular weight to your specific water chemistry and solid characteristics.


For Inorganic Wastewater / High Mineral Content:
Choose Low to Medium Molecular Weight (12-16 Million) with Medium Charge Density (20-25%). Ideal for fast-settling mineral slurries and coal washing.


For Organic Sludge Dewatering (Belt Press / Centrifuge / Screw Press):
Choose High Molecular Weight (18-22 Million) with Moderate Hydrolysis (25-30%). This creates robust flocs capable of withstanding high mechanical shear forces.


Recommended Jar Test Protocol:
Prepare a 0.1% stock solution using clean tap water (allow 60 minutes for complete hydration).
Adjust wastewater pH to target operating levels.
Dosing gradient test: evaluate dosages from 1.0 ppm to 10.0 ppm.
Measure supernatant clarity, floc settling velocity (SV30), and capillary suction time (CST) of the sludge.

 

Manufacturing & Quality Control

Ecolink operates a dedicated synthesis facility equipped with automated temperature-controlled polymerization reactors, thin-film drying systems, and precision screening units. 

Raw Material Verification:

Acrylamide monomer inputs undergo incoming GC (Gas Chromatography) testing to verify purity before batch release.

In-Process Monitoring:

Viscosity and solid content are sampled every 2 hours during polymerization to maintain strict molecular weight tolerances.

Batch Traceability:

Every production lot is assigned a unique tracking code. Representative samples are retained in our climate-controlled laboratory for 24 months.

Certifications:

ISO 9001:2015 Quality Management System, ISO 14001 Environmental Management System, and NSF/ANSI Standard 60 certification for drinking water treatment chemicals.

 

 

Packaging & Supply Capacity

Standard Packaging:
25 kg multi-wall paper-plastic composite bags with inner polyethylene lining.
750 kg / 1000 kg heavy-duty PP bulk bags (Jumbo bags) with bottom discharge spout.


Storage Conditions: Store in a cool, dry, well-ventilated area away from direct sunlight and moisture. Unopened packaging remains stable for 24 months. Note: Solid APAM dust becomes slippery on contact with water; clean up spills immediately.


Supply Capacity: Annual production output of 50,000 Metric Tons. Regular stock maintained at major logistics hubs to ensure 14-day dispatch windows for standard FCL orders.

Polyacrylamide Friction Reducer

 

Why Choose Ecolink

 

Direct Manufacturer Pricing:

Eliminate intermediate distributor markups through direct factory supply agreements.

01

Technical Customization:

Ability to tailor molecular weight and hydrolysis degree to match specific customer effluent profiles.

02

EU REACH Compliance:

Full regulatory support with pre-registration/registration status and Only Representative (OR) services available for European importers.

03

Full Documentation Suite:

Immediate availability of lot-specific Certificate of Analysis (COA), Safety Data Sheets (SDS), and third-party heavy metal test reports.

04

Global Logistics Experience:

Export compliance expertise covering sea freight DG documentation, container loading optimization, and customs clearance support.

05

 

 

Frequently Asked Questions

 

 

Q: How do I prevent "fish-eyes" (undissolved gel particles) when preparing the APAM solution?

A: "Fish-eyes" typically occur when polymer powder is added too quickly or dumped into stagnant water. To ensure proper dispersion, use an automated mechanical dry-powder feeder equipped with a wetting cone. Add the powder slowly into the vortex of agitated water (400 - 600 rpm). Avoid high-shear centrifugal pumps during transfer, as excessive shear degrades the long polymer chains and reduces flocculation efficiency.

Q: What is the shelf life of solid APAM, and how does humidity affect it?

A: Unopened solid APAM stored in original packaging has a shelf life of 24 months. Because polyacrylamide is hygroscopic, exposure to humid air causes caking and partial dissolution on the surface, which complicates subsequent makeup. Store pallets on wooden dunnage away from concrete floors and ensure warehouse relative humidity is kept below 70%.

Q: Can Ecolink provide custom molecular weights for specialized oilfield EOR projects?

A: Yes. For enhanced oil recovery (EOR) applications requiring ultra-high molecular weight (25 - 30 Million Daltons), we run dedicated batch synthesis lines. We supply customized viscosity-to-concentration curves and resistance factor test reports tailored to specific reservoir temperature and salinity conditions.

Q: What shipping documents are provided for international chemical shipments?

A: Every shipment includes the Commercial Invoice, Packing List, Bill of Lading, Certificate of Analysis (COA) for the specific production lot, Safety Data Sheet (SDS) compliant with GHS standards, and a non-dangerous goods transport certificate (as solid APAM is classified as non-hazardous for ocean freight).

 

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Request a Quote

Ready to optimize your separation process or evaluate a sample? Contact our technical sales team to discuss your specification requirements or request trial quantities.
Email: sales@ecolinkchem.com
Technical Inquiry: tech@ecolinkchem.com
Sample Request: Provide your wastewater source, current dosage, and target performance metrics for a customized grade recommendation within 24 hours.

Shandong Ecolink Technology Co., Ltd. is one of the most reliable anionic polyacrylamide manufacturers and suppliers in China. We warmly welcome you to wholesale bulk high quality anionic polyacrylamide from our factory. If you have any enquiry about cooperation, please feel free to email us.

Polyacrylamide for Tailings Treatment, Drilling Mud Additive PAM, Polymer Thickener
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