Cationic Polyacrylamide Storage — cPAM Flocculant Tank Selection

Storing Cationic Polyacrylamide? Start Here

Cationic polyacrylamide, or cPAM, is a key player in sludge dewatering and wastewater treatment. If you're involved in municipal wastewater management or industrial processes with high-solids waste, this polymer is likely on your radar. It comes in three forms: dry powder, inverse emulsion, and water-in-water dispersion. Each form requires specific handling and storage solutions to ensure efficiency and safety.

Can you store it in a poly tank?

Yes, you can store cPAM in a poly tank. High-density polyethylene (HDPE) and cross-linked polyethylene (XLPE) tanks are suitable for all forms of cPAM, including the working solution. Just be mindful of the specific form factor you're dealing with, as the inverse emulsion may affect certain elastomers.

Key Issue: Form Factor Handling

Each cPAM form requires careful handling. The inverse emulsion, for example, contains mineral oil that can swell certain gaskets, while the water-in-water dispersion's high salt content might cause chloride pitting in stainless steel. Ensure your storage and handling systems are compatible with the specific form of cPAM you use.

The safety that actually matters

• Use HDPE tanks for storage to avoid compatibility issues.
• Match gaskets to the manufacturer chart to prevent leaks.
• Ensure proper ventilation when handling dry powder to avoid dust inhalation.
• Follow OSHA guidelines for handling acrylamide safely.

Common questions

What type of tank is best for cPAM storage?

HDPE tanks are recommended for all cPAM forms, including the working solution.

Can I use stainless steel tanks?

Stainless steel is not recommended for the water-in-water dispersion due to chloride pitting risks.

What gaskets should I use?

Use EPDM gaskets for most applications, but switch to Viton or Buna-N for inverse emulsion to handle the mineral oil.