WWT 8400 Y is a structured, medium-molecular-weight cationic polyacrylamide in emulsion form. It is used as a flocculant in a wide variety of municipal and industrial wastewater treatment applications. This product has been successfully applied in liquid/solids separation systems, including clarification and dewatering. It is well-suited for very high-shear applications such as rotary presses, screw presses, and centrifuges.

Functions: Flocculant

Chemical Family: Cationics, Polyacrylamides

Applicable Processes: Industrial Water Treatment, Water Clarification, Water Treatment

Features: High Molecular Weight, Improved Dewatering

Synonyms: Hydrotreated light distillate (petroleum)

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Identification & Functionality

Features & Benefits

Industrial Additives Features

Applications & Uses

Markets
Applications
Applicable Processes
Preparation and Feeding Information

WWT 8400 Y is a single component emulsion polymer that must be pre-diluted in water before use. In most cases, this product should not be applied neat. One method for dilution is adding the neat polymer into the vortex of a mixed tank at a concentration between 0.25 - 1.0% polymer (0.5% is optimum) by weight. The polymer can also be injected through a number of commercially available systems that provide in-line mechanical mixing. 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
Clear to milky white liquid
Typical Properties
ValueUnitsTest Method / Conditions
Cationic Charge80.0%-
Average Non-volatile Solids49.0%-
Freezing Point0.0°C-
Bulk Viscosity1200.0cPs-
Density8.6 - 8.7lbs/gal-

Regulatory & Compliance

Packaging & Availability

Packaging Type
Supplied by

Storage & Handling

Shelf Life
1 Year
Materials of Construction

Cross-linked polyethylene, fiberglass, stainless steel or lined steel are the preferred materials of construction for bulk tanks. Avoid natural rubber and Buna-N gaskets as these materials swell when placed in contact with neat polymer. Unlined mild steel, black iron, galvanized steel, copper or brass are not recommended in any part of the feed system. Stainless steel, Viton or Teflon are the best choices for pump heads. For feed lines, polyethylene, PVC or reinforced Tygon tubing is recommended.

Storage, Stability and Handling Information

Suggested in-plant storage life is one year in unopened drums. For best results, store at 50-80°F. Bulk tanks should be mixed by periodically recirculating the contents bottom to top. Bulk tanks can also be fitted with an agitator type mixer that reaches the bottom 2 feet of the tank. Do not allow emulsion polymers to freeze. Should freezing occur, allow the product to thaw thoroughly in a heated area and mix well before attempting to use it. For spills of WWT 8400 Y, sprinkle salt, vermiculite or equivalent absorbent over the spill area and sweep the material into approved chemical disposal containers. Do not spray water onto a spill because the resulting gel is very difficult to clean up.