BWD-01 Water Decoloring Agent CAS 55295-98-2

Technical Profile

Chemically, this is a quaternary ammonium cationic polymer (often related to Dicyandiamide Formaldehyde Resin). Because dye molecules usually carry a negative charge, the strong positive charge of BWD-01 neutralizes them, causing the dye to destabilize and form “flocs” (clumps) that can be easily filtered out.

Where It Is Used: Applications

BWD-01 is not a general-purpose flocculant like PAM; it is a specialist. It shines in high-chroma (high color) wastewater environments.

1. Textile Dyeing & Printing Plants This is the primary use case. It is highly effective against:

• Reactive Dyes
• Acid Dyes
• Disperse Dyes
• Direct Dyes It creates clear water where traditional coagulants (like PAC) fail or require massive dosage rates.

2. Pulp and Paper Industry It acts as a retention agent in the production process and is used to treat the “black liquor” or colored wastewater generated during paper bleaching.

3. Paint, Ink, and Pigment Industry Any facility washing down tanks filled with water-based inks or pigments can use BWD-01 to strip the color before discharge.

4. Sludge Dewatering When used in conjunction with Polyaluminum Chloride (PAC) and Polyacrylamide (PAM), it improves the formation of sludge flocs, making the sedimentation process faster and the resulting sludge drier.

Why Usage Methodology Matters

BWD-01 is powerful, but it requires the right “recipe.” Typically, it works best when the wastewater pH is adjusted to the 7.0–8.0 range. The standard workflow is:

1. Adjust pH.
2. Add BWD-01 (Wait for reaction).
3. Add PAC (to bulk up the flocs).
4. Add Anionic PAM (to settle the flocs).

Note: Every wastewater stream is different. We always recommend a “Jar Test” in your lab before large-scale dosing.

Safety and Precautionary Measures

While BWD-01 is widely used, it is an industrial chemical and should be handled with standard safety protocols.

• Skin and Eye Contact: It is slightly acidic and sticky. If it splashes into eyes, wash immediately with plenty of water for at least 15 minutes. Wash skin with soap and water.
• Spill Management: This is the most practical safety tip: BWD-01 is extremely slippery when spilled. If a spill occurs, use sand or sawdust to absorb it. Do not just spray water on the floor, as it will turn the area into an ice rink, creating a slip hazard for workers.
• Protective Gear: Operators should wear rubber gloves, safety goggles, and protective clothing to avoid direct contact.

Storage Conditions

To maintain the efficacy of the polymer, proper storage is required:

1. Temperature: Store at room temperature (10°C – 30°C). Avoid freezing and avoid extreme heat, which can degrade the polymer chains.
2. Container: Use plastic, fiberglass, or stainless steel tanks. Avoid iron or copper containers due to potential corrosion or reaction.
3. Shelf Life: Under proper conditions, the product remains stable for 12 months.
4. Separation: Keep away from strong oxidizers.