Quaternary ammonium salt-type decolorizers are chemicals specifically used for treating colored wastewater, particularly effective in industries such as dyeing and papermaking. The main component of this decolorizer is quaternary ammonium salt, a cationic surfactant with excellent emulsifying, dispersing, wetting, and bactericidal properties.
Main Mechanisms of Quaternary Ammonium Salt-Type Decolorizer:
Adsorption Bridging: The large molecules of the quaternary ammonium salt polymer decolorizer have a linear structure, allowing them to connect dye molecules in wastewater through adsorption bridging, forming larger flocs.
Charge Neutralization: Since quaternary ammonium salt carries a positive charge, it can interact with the negative charges on dye molecules. This charge neutralization destabilizes the dye molecules, allowing them to separate from the water.
Flocculation: The formed flocs are large and settle quickly, aiding in the rapid clarification of wastewater.
Characteristics Compared to Traditional Decolorizers:
High Decolorization Efficiency: Quaternary ammonium salt-type decolorizers have a high decolorization efficiency and are effective against various types of dyes.
Rapid Reaction: This decolorizer quickly dissolves in water and reacts rapidly, forming multi-nuclear complexes that accelerate the treatment process.
Ease of Use: Quaternary ammonium salt-type decolorizers are easy to use, requiring relatively small amounts, and the operation is simple.
Environmentally Friendly: It does not contain harmful substances, making it environmentally friendly and free from causing secondary pollution.
Bactericidal Effect: In addition to decolorization, quaternary ammonium salt has a certain bactericidal effect, further improving water quality.
Good Stability: Quaternary ammonium salt-type decolorizers are resistant to degradation and have a long shelf life.
Applications:
This decolorizer is mainly used in the treatment of colors in anodizing, textile dyeing, hardware electroplating, papermaking, pigment production, oily wastewater, chemical wastewater, and ink wastewater. It also reduces other pollutants in the water, lowers wastewater chroma, and improves effluent quality. Additionally, it is applied in reclaimed water reuse, pretreatment of small amounts of highly concentrated colored wastewater, oil field drilling, and other water treatment fields. It works on the principle of flocculation and decolorization, leaving no residual metal ions, and solves water pollution issues through single-step sludge-water separation without causing secondary pollution. The dosing process is simple and highly adaptable.
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