Advantages of One-Step Powdery Flocculants  in Wastewater Treatment

 

  Powdered flocculants are widely used chemicals, consisting of powdered products made from high-molecular-weight organic polymers. The characteristics and structure of these high-molecular-weight polymers allow them to rapidly unfold and form large-molecule flocculants in water, effectively agglomerating suspended solids in water. This is especially crucial in industrial wastewater treatment, as it efficiently removes suspended solids, suspended oils and fats, and other organic substances, thereby improving water quality.

 

(Further reading:All-in-One: One-Step Powdery Flocculants for Coagulation, Decolorization, and Sludge Reduction )

 

•   Common components of powdered flocculants include:

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1. Polyacrylamide (PAM): A high-molecular-weight organic polymer, commonly used as a component of powdered flocculants. PAM exhibits strong adsorption and flocculation properties, quickly aggregating suspended solids in water to form compact flocs.
2. Polyaluminum Chloride (PAC): A high-molecular-weight flocculant containing aluminum. It generates aluminum hydroxide precipitation in water, resulting in effective flocculation of suspended solids and certain dissolved substances.
3. Polyferric Sulfate (PFS): A high-molecular-weight flocculant containing iron. It rapidly forms iron hydroxide precipitation, effectively flocculating suspended solids in water.
4. Polyaluminium Chloride (PACl): A high-molecular-weight flocculant containing aluminum. While similar to PAC, its aluminum content and polymerization degree may differ.

 

• The reaction process of powdered flocculants involves the following steps: ​​(Further reading:一劑型粉體絮凝劑_表面處理廢水)

 

1.  Mixing: Thoroughly mix the powdered flocculant with wastewater to disperse it evenly in the liquid.
2. Aggregation: The unfolded high-molecular-weight polymers in the flocculant form flocs with suspended solids.
3. Settling or Floating: The formed flocs rapidly settle or float in the water.
4. Separation: In a settling tank, flocs are separated from the wastewater, achieving water purification.

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• Advantages of powdered flocculants include:

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1. Efficient Flocculation Capability: Powdered flocculants quickly and effectively bind solid particles suspended in wastewater, creating larger flocs that enhance the settling of solid particles and improve wastewater clarity.
2.  Cost Savings: Compared to traditional liquid flocculants, powdered flocculants require less usage, reducing procurement costs, and minimizing packaging and transportation expenses, resulting in significant cost-effectiveness.
3. Convenient Storage and Transportation: Powdered flocculants are provided in powder form, making them easy to store and transport, occupying less space and reducing transportation costs and packaging materials usage.
4. Wide Applicability: Powdered flocculants are suitable for treating various types of wastewater, whether industrial wastewater or urban sewage, effectively addressing diverse treatment needs.