Sodium Aluminate Storage — NaAlO2 Liquid Coagulant Tank Selection

Storing Sodium Aluminate? Start Here

Sodium aluminate is a powerful chemical used in water treatment, paper production, and concrete acceleration. In water treatment, it's often paired with acidic coagulants like alum to balance pH levels and improve floc formation. This combination is efficient and reduces sodium content in the treated water. However, storing sodium aluminate requires careful consideration due to its highly alkaline nature and potential to corrode certain materials.

Can you store it in a poly tank?

Yes, you can store sodium aluminate in a polyethylene (poly) tank, particularly for day-to-day operations in municipal water plants. High-density polyethylene (HDPE) or cross-linked polyethylene (XLPE) tanks are suitable for this purpose. However, for large-scale storage, carbon steel tanks are often preferred.

Watch out for aluminum

Never use aluminum in any part of your storage or handling system for sodium aluminate. This chemical aggressively attacks aluminum, causing dangerous reactions. Always opt for materials like carbon steel or HDPE to avoid any mishaps.

The safety that actually matters

• Ensure tanks are made of compatible materials like HDPE or carbon steel.
• Use EPDM gaskets for a reliable seal in caustic environments.
• Avoid any contact with aluminum to prevent hazardous reactions.

Common questions

Can sodium aluminate be stored in aluminum tanks?

No, aluminum is not compatible and will react dangerously with sodium aluminate.

What is the best material for gaskets?

EPDM is recommended for its compatibility with caustic chemicals like sodium aluminate.

Is NSF 60 certification required?

Yes, NSF 60 certification is mandatory for sodium aluminate used in drinking water treatment.