Poly Aluminium Chloride Powder PAC Coagulant for Drinking Water Treatment
Product Overview
Poly Aluminium Chloride Powder, also known as PAC powder or Polyaluminum Chloride powder, is an inorganic polymer coagulant widely used in drinking water treatment and water purification systems.
In drinking water treatment plants, raw water often contains suspended solids, clay particles, colloids, algae, organic matter and fine impurities. These particles are usually difficult to remove by natural settling alone because they are small and stable in water.
PAC coagulant helps neutralize the surface charge of these particles. After proper mixing, the particles gather into larger flocs. These flocs can then be removed through sedimentation, filtration or other clarification processes.
Bluwat PAC powder is produced by spray drying technology and supplied in stable powder form. It is easy to store, transport and prepare as a dosing solution before use. For drinking water treatment applications, PAC-01 white powder is commonly selected because of its high purity, low insoluble matter and stable coagulation performance.
Why PAC Is Used in Drinking Water Treatment
Drinking water treatment requires stable and efficient clarification before filtration and disinfection. If raw water turbidity is not properly controlled, the downstream filtration system may become overloaded and final water clarity may be affected.
PAC powder is widely used because it provides fast coagulation and strong floc formation. It can help improve the removal of fine suspended solids and colloidal impurities, making the water clearer and easier to filter.
Compared with traditional aluminum sulfate, PAC can often work effectively at lower dosage levels and across a wider pH range. It can also help form compact flocs with good settling performance, which supports smoother operation in water treatment plants.
Key Advantages
PAC powder helps remove turbidity from raw water by destabilizing fine particles and forming larger flocs. This improves water clarity before filtration.
After dosing and rapid mixing, PAC can quickly react with impurities in water. The generated flocs can grow during slow mixing and settle more easily.
For drinking water treatment, low insoluble matter is important for stable performance and cleaner operation. PAC-01 white powder has low insoluble content and is suitable for high clarity water treatment requirements.
PAC powder dissolves well in water and can be prepared as a solution for dosing. This makes it convenient for continuous water treatment plant operation.
PAC can work in a relatively wide pH range, helping reduce the need for excessive pH adjustment in many raw water conditions.
The powder form is suitable for storage, transportation and export supply. It is packed in 25 kg bags and can be stored in a dry and ventilated warehouse.
Recommended Grade for Drinking Water
For drinking water treatment, PAC-01 white powder is usually recommended.
Typical PAC-01 specification:
| Product Name | Poly Aluminium Chloride Powder |
| Grade | PAC-01 |
| Appearance | White Powder |
| Al2O3 Content | ≥30% |
| Basicity | 45–55% |
| Insoluble Matter | ≤0.1% |
| Process | Spray Dried |
| Application | Drinking Water Treatment and Water Purification |
PAC-01 is designed for applications that require higher purity and lower insoluble matter. It is suitable for raw water clarification, turbidity removal and coagulation before filtration.
Other PAC grades can also be selected based on different water quality, treatment target and cost requirements.
How PAC Works in Drinking Water Treatment
The drinking water treatment process usually includes coagulation, flocculation, sedimentation, filtration and disinfection.
PAC is mainly used in the coagulation stage.
PAC solution is dosed into the raw water. During rapid mixing, PAC disperses quickly and contacts suspended solids, colloids and organic impurities.
The surface charge of the fine particles is neutralized. This reduces particle stability and allows them to combine.
During slow mixing, micro flocs grow into larger and stronger flocs.
The formed flocs settle in the sedimentation tank or are removed by filtration.
This process helps improve water clarity and reduce the load on the filtration system.
Typical Application Areas
PAC powder is used to clarify river water, lake water, reservoir water and surface water before further treatment.
PAC coagulant supports stable coagulation and sedimentation in municipal drinking water plants.
PAC helps remove turbidity and suspended particles before filtration and disinfection, supporting clearer potable water production.
For raw water with low to medium turbidity, PAC can provide effective coagulation performance when properly dosed.
During rainy seasons or raw water quality fluctuation, PAC can help improve floc formation and sedimentation efficiency.
PAC can also be used for process water, cooling water pretreatment and other industrial water clarification applications.
Dosing and Use Method
PAC powder should normally be dissolved in clean water before dosing.
A typical preparation method is to make a PAC solution first, then dose the prepared solution into the raw water through a dosing pump.
The actual dosage should be adjusted according to raw water turbidity, pH value, alkalinity, temperature, organic content and treatment target.
Jar testing is recommended before full scale use. Through jar testing, the operator can compare different PAC dosages and select the best treatment condition for floc formation, sedimentation speed and final water clarity.
Packaging and Storage
Bluwat PAC powder is packed in 25 kg bags with inner plastic bag and outer woven bag.
Storage recommendations:
- Keep the product in original sealed bags.
- Store in a cool, dry and well ventilated warehouse.
- Avoid moisture, direct sunlight and high temperature.
- Keep away from incompatible materials.
- Reseal unused product after opening.
- Proper storage helps maintain product stability and treatment performance.
Why Choose Bluwat PAC Powder
Bluwat Chemicals is a professional manufacturer and exporter of water treatment chemicals. With long term production experience and global supply capability, Bluwat provides reliable PAC powder for drinking water, municipal wastewater and industrial wastewater treatment.
Our PAC powder is produced under strict quality control to ensure stable Al2O3 content, consistent appearance and reliable coagulation performance.
Bluwat can provide different PAC grades, including white powder and yellow powder, to meet different application requirements. For drinking water treatment projects, we can support customers with product selection, jar test guidance and dosage adjustment suggestions.
Conclusion
Poly Aluminium Chloride Powder PAC Coagulant is an effective chemical for drinking water treatment and raw water purification. It helps remove turbidity, suspended solids and colloidal impurities through coagulation and flocculation.
For water treatment plants that need stable clarification performance, PAC-01 white powder with high Al2O3 content and low insoluble matter is a practical choice.
Bluwat supplies PAC powder in 25 kg bags with factory direct supply, stable quality and export service for global water treatment customers.