PAC Powder for Coagulation and Flocculation in Water Treatment
Product Overview
PAC Powder, also known as Polyaluminum Chloride Powder or Poly Aluminium Chloride Powder, is an inorganic polymer coagulant widely used in coagulation and flocculation water treatment.
In water and wastewater treatment, many impurities exist as fine suspended particles, colloids or small organic particles. These impurities are often stable in water and do not settle easily by gravity. PAC powder helps destabilize these particles and makes them easier to remove.
After PAC is dosed into water, it neutralizes the charge of suspended particles and colloids. This allows small particles to gather into micro flocs. During the flocculation stage, these micro flocs grow into larger flocs. The larger flocs can then be removed by sedimentation, flotation or filtration.
Bluwat supplies spray dried PAC powder in different grades for drinking water treatment, municipal wastewater treatment, industrial wastewater treatment and other water clarification applications.
What Is Coagulation and Flocculation in Water Treatment
Coagulation and flocculation are two important steps in water treatment.
Coagulation is the first step. A coagulant such as PAC is added into water to neutralize particle charges. This breaks the stability of fine particles and colloids.
Flocculation is the next step. Under slow mixing, the destabilized particles come together and form larger flocs. If PAM flocculant is added after PAC, the flocs can become larger, stronger and faster settling.
In many water treatment plants, PAC and PAM are used together. PAC works as the coagulant, while PAM works as the flocculant.
Why Use PAC Powder for Coagulation and Flocculation
PAC powder is widely used because it provides strong coagulation performance, fast floc formation and good adaptability to different water qualities.
PAC powder is also easy to store, easy to transport and convenient to prepare as a dosing solution for continuous treatment operation.
Key Advantages
Efficient Coagulation Performance: PAC powder helps neutralize the charge of fine particles and colloids, making them easier to aggregate and remove.
Strong Floc Formation: After proper dosing and mixing, PAC supports the formation of visible flocs that can settle or separate more easily.
Good Compatibility with PAM: PAC is commonly used before PAM flocculant. PAC starts coagulation, while PAM enlarges flocs and improves sedimentation speed.
Turbidity and Suspended Solids Removal: PAC helps reduce turbidity and suspended solids in raw water, sewage and industrial wastewater.
Wide Application Range: PAC powder can be used in drinking water treatment, municipal wastewater treatment, industrial wastewater treatment, textile wastewater, paper mill wastewater, mining wastewater, coal washing wastewater and food processing wastewater.
Stable Spray Dried Powder: The spray dried powder form provides good solubility, stable quality and convenient storage.
Flexible Grade Selection: Bluwat supplies PAC-01, PAC-02 and PAC-031 grades to meet different treatment requirements.
Factory Direct Supply: Bluwat provides PAC powder with stable quality, 25 kg bag packaging, export service and technical support.
Product Grades and Specifications
Appearance: White Powder | Al2O3 Content: ≥30% | Basicity: 45–55% | Insoluble Matter: ≤0.1% | Type: Spray Dried
Recommended Application: Drinking water treatment, raw water clarification and high purity water treatment
Appearance: Yellow Powder | Al2O3 Content: ≥30% | Basicity: 45–85% | Insoluble Matter: ≤0.1% | Type: Spray Dried
Recommended Application: Municipal wastewater treatment, industrial wastewater treatment and general coagulation treatment
Appearance: Yellow Powder | Al2O3 Content: ≥29% | Basicity: 50–90% | Insoluble Matter: ≤1.5% | Type: Spray Dried
Recommended Application: Industrial wastewater, sewage treatment, high turbidity wastewater and cost effective clarification
Different PAC grades can be selected according to water quality, turbidity level, pH value, treatment target, purity requirement and operating cost.
Typical Applications
PAC and PAM Dosing Sequence
In many water treatment systems, PAC and PAM are used together. The recommended dosing sequence is PAC first and PAM second.
PAC is added first to destabilize suspended particles and colloids. This step forms micro flocs. PAM is added after PAC to bridge the micro flocs into larger flocs. This improves floc strength, settling speed and clarification performance.
If PAM is added before PAC, the treatment result may be weaker because the particles have not been fully destabilized.
For wastewater with high color, a water decoloring agent may be added before PAC.
Suggested Dosing Process
The actual dosage should be confirmed by jar testing. Factors like pH, turbidity, and temperature can affect the best dosage.
Packaging and Storage
Bluwat PAC Powder is packed in 25 kg bags with inner plastic bag and outer woven bag.
Storage recommendations:
● Store in a cool, dry and well ventilated warehouse.
● Keep away from moisture and direct sunlight.
● Keep the bags sealed before use.
● Avoid exposure to heat and incompatible materials.
● Use the product promptly after opening.
Why Choose Bluwat PAC Powder
Bluwat Chemicals is a professional manufacturer and exporter of water treatment chemicals. We supply PAC powder, PAM flocculant, water decoloring agent, PolyDADMAC, Polyamine and other chemicals for water and wastewater treatment.
Bluwat PAC powder is produced under stable quality control and supplied in different grades for drinking water, municipal wastewater and industrial wastewater applications. With factory direct supply and expert technical support, we help customers select the most suitable grades.
Conclusion
PAC Powder is an effective chemical for coagulation and flocculation in water treatment. It helps remove turbidity, suspended solids, colloids and fine particles by improving floc formation and solid liquid separation.
For drinking water plants, sewage treatment systems, industrial wastewater facilities, DAF units and filtration pretreatment systems, PAC powder provides stable and flexible treatment performance.
Bluwat supplies PAC-01, PAC-02 and PAC-031 spray dried PAC powder grades with reliable quality, factory direct supply and technical support for global water treatment customers.