PWT 3905-S is a low charge, very high molecular weight anionic polyacrylamide in dry form. It is used as a flocculant in a wide variety of municipal and industrial wastewater treatment applications, and has been successfully applied in liquid/solids separation systems, including clarification and dewatering.

Functions: Flocculant

Chemical Family: Polyacrylamides

Applicable Processes: Dewatering, Industrial Water Treatment, Solid-Liquid Separation, Wastewater Treatment, Water Clarification, Water Treatment

Features: High Molecular Weight

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Identification & Functionality

Features & Benefits

Industrial Additives Features

Applications & Uses

Markets
Applications
Applicable Processes
Use Level
max. 1 mg/l
Preparation and Feeding Information
  • PWT 3905-S is a dry polymer that must be pre-diluted in water before use.
  • One method for dilution is adding the polymer into the vortex of a mixed tank at a concentration between 0.1 - 0.5% polymer by weight and then mixing at slow speed (300 rpm maximum).
  • A much better method is to use a dry polymer make down system.
  • A number of commercially available systems will produce excellent results.
  • Polymer solutions should be aged for 30-60 minutes prior to use for best results.
  • Solution shelf life is 8-16 hours.

Properties

Physical Form
Appearance
White powder
Typical Properties
ValueUnitsTest Method / Conditions
Anionic Charge5.0%-
Mesh Size (Above #10 Mesh)max. 2%-
Mesh Size (Below #100 Mesh)max. 6%-
Viscosity (at 0.1%)70.0cPs-
Viscosity (at 0.25%)250.0cPs-
Viscosity (at 0.5%)500.0cPs-
Bulk Density0.8--

Regulatory & Compliance

Certifications & Compliance
Chemical Inventories
Regulatory Information
  • PWT 3905-S is approved under NSF/ANSI 60 for drinking water treatment.

Packaging & Availability

Storage & Handling

Shelf Life
2 Years
Storage, Stability and Handling Information
  • Suggested in-plant storage life is two years in unopened bags and drums.
  • For best results, store at 32 - 90°F.