Polyaluminum Chloride Water Treatment Coagulant for Clarification
Product Overview
Polyaluminum Chloride, commonly known as PAC, is an inorganic polymer coagulant widely used for water treatment clarification. It is available in powder form and can be dissolved in water before dosing.
In many water and wastewater treatment systems, the main purpose of clarification is to remove suspended solids, fine particles, colloids and other impurities that make water cloudy. These particles are often too small to settle naturally. PAC coagulant helps destabilize these particles and allows them to gather into larger flocs.
Once flocs are formed, they can be separated from water by sedimentation, dissolved air flotation or filtration. This improves water clarity and supports more stable operation of downstream treatment units.
Bluwat supplies spray dried PAC powder in different grades, including PAC-01, PAC-02 and PAC-031, for drinking water, municipal wastewater and industrial wastewater clarification.
Why Clarification Is Important in Water Treatment
Clarification is a key step in water and wastewater treatment. If suspended solids and colloidal impurities are not removed properly, the water may remain cloudy and the treatment system may face higher operating pressure.
In drinking water treatment, clarification helps reduce turbidity before filtration and disinfection.
In municipal wastewater treatment, clarification helps improve sedimentation and reduce suspended solids in effluent.
In industrial wastewater treatment, clarification can reduce solids, color, colloids and organic impurities before further treatment or discharge.
PAC coagulant supports the clarification process by improving particle aggregation and floc formation.
How PAC Coagulant Improves Clarification
PAC works mainly through charge neutralization and coagulation.
After PAC solution is added to water, it interacts with suspended particles and colloids. These particles normally carry surface charges that keep them dispersed in water. PAC reduces this stability and allows particles to come together.
During mixing, small particles first form micro flocs. With continued slow mixing, these micro flocs grow into larger flocs. The larger flocs can then settle in a clarifier, float in a DAF system or be removed by filtration.
This process helps improve water clarity, reduce turbidity and support efficient solid liquid separation.
Key Advantages
Efficient Water Clarification
PAC coagulant helps remove fine suspended particles and colloids, improving the clarity of treated water.
Strong Floc Formation
PAC supports the formation of visible and compact flocs that are easier to settle or separate.
Fast Reaction
PAC disperses quickly after dosing and starts the coagulation process under proper mixing conditions.
Wide Application Range
PAC can be used in drinking water treatment, municipal wastewater treatment, industrial wastewater treatment and process water clarification.
Good Compatibility with PAM
PAC is often used with PAM flocculant. PAC destabilizes particles, while PAM helps enlarge flocs and improve separation speed.
Flexible Grade Selection
Bluwat supplies PAC powder in white and yellow grades for different water quality and treatment requirements.
Convenient Powder Form
Spray dried PAC powder is easy to store, transport and prepare as a dosing solution.
Factory Direct Supply
Bluwat provides stable PAC powder quality, export supply and technical support for global water treatment customers.
Recommended Product Grades
Appearance: White Powder
Al2O3 Content: ≥30%
Basicity: 45–55%
Insoluble Matter: ≤0.1%
Type: Spray Dried
Recommended Application: Drinking 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, industrial wastewater and general water clarification
Appearance: Yellow Powder
Al2O3 Content: ≥29%
Basicity: 50–90%
Insoluble Matter: ≤1.5%
Type: Spray Dried
Recommended Application: Industrial wastewater, sewage treatment and cost effective clarification
The suitable PAC grade should be selected according to raw water quality, turbidity level, pH, treatment target and operating cost.
Application Areas
PAC powder can be used in drinking water plants to clarify river water, lake water, reservoir water and other raw water sources before filtration.
PAC helps reduce turbidity and suspended solids in sewage treatment plants, supporting clearer effluent and more stable plant operation.
PAC is widely used for industrial effluent clarification in textile, paper, mining, chemical, food processing and metallurgical wastewater systems.
In dissolved air flotation systems, PAC can improve particle destabilization and support better flotation separation when used with suitable flocculant.
PAC helps form denser flocs, which can improve settling performance in sedimentation tanks and clarifiers.
PAC can be used before filtration to reduce turbidity and protect filter media or downstream treatment equipment.
In water reuse projects, PAC can help improve pretreatment and reduce suspended solids before advanced treatment.
Suggested Dosing Method
PAC powder should usually be prepared as a solution before use.
A common dosing process includes the following steps.
First, dissolve PAC powder in clean water to prepare a uniform solution.
Second, dose the PAC solution into raw water or wastewater under rapid mixing.
Third, allow PAC to fully contact suspended solids and colloids.
Fourth, continue slow mixing to support floc growth.
Fifth, add PAM flocculant if larger flocs and faster sedimentation are required.
Finally, remove the formed flocs through sedimentation, flotation or filtration.
Jar testing is recommended before full scale operation. The best dosage depends on water turbidity, pH, temperature, suspended solids, alkalinity and clarification target.
PAC and PAM for Better Clarification
PAC and PAM are commonly used together in water clarification systems.
PAC acts as the coagulant. It neutralizes particle charges and starts micro floc formation.
PAM acts as the flocculant. It bridges micro flocs into larger flocs and improves settling or flotation performance.
The usual dosing sequence is PAC first and PAM second. This sequence is commonly used in clarifiers, DAF systems and industrial wastewater treatment plants.
Packaging and Storage
Bluwat PAC powder is supplied in 25 kg bags with inner plastic bag and outer woven bag.
Storage recommendations:
- Store in a cool and dry warehouse.
- Keep away from moisture and direct sunlight.
- Keep the bags sealed before use.
- Avoid contact with incompatible materials.
- Use the product promptly after opening.
Proper storage helps maintain product solubility, powder quality and coagulation performance.
Why Choose Bluwat Chemicals
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 water treatment chemicals.
Bluwat PAC powder is produced under stable quality control and supplied in different grades for drinking water, wastewater and industrial clarification applications.
With factory direct supply, export experience and technical support, Bluwat can help customers choose suitable PAC grades based on water samples, treatment process and clarification targets.
Conclusion
Polyaluminum Chloride Water Treatment Coagulant is an effective chemical for water clarification. It helps remove turbidity, suspended solids and colloidal impurities through coagulation and flocculation.
For drinking water plants, sewage treatment systems, industrial wastewater facilities, DAF units and filtration pretreatment, PAC powder can support clearer water and more stable operation.
Bluwat supplies PAC-01, PAC-02 and PAC-031 spray dried PAC powder grades for global water treatment customers, with factory direct supply and technical support.