PAC-031 Poly Aluminium Chloride Powder 29% for Wastewater Treatment
Product Overview
PAC-031 Poly Aluminium Chloride Powder 29% is an inorganic polymer coagulant designed for wastewater treatment and industrial water clarification.
As a yellow PAC powder, PAC-031 helps remove suspended solids, colloidal particles, fine impurities and turbidity from wastewater through chemical coagulation. After dosing and mixing, PAC-031 destabilizes small particles and allows them to form larger flocs. These flocs can then be separated from water by sedimentation, dissolved air flotation or filtration.
Compared with higher purity drinking water grades, PAC-031 is mainly used for industrial wastewater, municipal sewage and cost sensitive treatment projects where stable coagulation performance and operating cost are both important.
Bluwat supplies PAC-031 as spray dried yellow powder in 25 kg bags for wastewater treatment plants, industrial users, contractors and water treatment chemical distributors.

Why PAC-031 Is Used for Wastewater Treatment
Wastewater treatment often needs efficient chemical coagulation before sedimentation, flotation, filtration or biological treatment. Many wastewater sources contain fine suspended solids and colloids that do not settle naturally.
PAC-031 is used to destabilize these particles and support floc formation. When the particles lose their surface charge, they begin to combine into micro flocs. During slow mixing, these micro flocs grow larger and become easier to remove.
For industrial wastewater and municipal sewage treatment, PAC-031 is a practical option because it provides good coagulation performance with competitive treatment cost.
It is commonly used before PAM flocculant. PAC-031 starts the coagulation process, while PAM helps enlarge the flocs and improve settling speed.
Key Advantages
Technical Specifications
| Product Name | PAC-031 Poly Aluminium Chloride Powder 29% |
| Chemical Name | Poly Aluminium Chloride |
| Common Name | PAC Powder |
| Grade | PAC-031 |
| Appearance | Yellow Powder |
| Al2O3 Content | ≥29% |
| Basicity | 50–90% |
| Insoluble Matter | ≤1.5% |
| Type | Spray Dried |
| Main Application | Wastewater Treatment |
| Other Applications | Industrial Wastewater, Municipal Sewage, High Turbidity Water, Water Clarification |
| Packaging | 25 kg bags |
Main Applications
How PAC-031 Works in Wastewater Treatment
PAC-031 powder is normally dissolved in clean water before dosing.
After the prepared PAC-031 solution is added into wastewater, it disperses quickly under rapid mixing. PAC-031 contacts suspended solids, colloidal particles and fine impurities in the wastewater.
During chemical coagulation, PAC-031 neutralizes the surface charge of these particles. Once the particles lose stability, they begin to form micro flocs.
During slow mixing, the micro flocs grow into larger flocs. If PAM flocculant is added after PAC-031, the flocs can become larger, stronger and faster settling.
Finally, the formed flocs are separated from water through sedimentation, dissolved air flotation or filtration.
Suggested Dosing Process
A common wastewater treatment process using PAC-031 includes the following steps.
-
1First, prepare PAC-031 powder solution with clean water.
-
2Second, dose PAC-031 solution into wastewater under rapid mixing.
-
3Third, allow PAC-031 to fully contact suspended solids and colloidal particles.
-
4Fourth, adjust pH if necessary according to jar test results.
-
5Fifth, add PAM flocculant under slow mixing if larger flocs and faster sedimentation are required.
-
6Finally, separate the formed flocs through sedimentation, DAF or filtration.
The actual dosage should be confirmed by jar testing. Wastewater type, turbidity, pH, suspended solids, color, organic content and treatment target can all affect the best dosage.
PAC-031 and PAM Combination
PAC-031 and PAM are commonly used together in wastewater treatment.
PAC-031 works as the coagulant. Its main function is to destabilize fine particles and form micro flocs.
PAM works as the flocculant. Its main function is to bridge micro flocs into larger flocs and improve settling speed.
The recommended dosing sequence is PAC-031 first and PAM second.
For wastewater with high color or stable dissolved pollutants, a water decoloring agent may be added before PAC-031 depending on wastewater condition and jar test result.
PAC-031 Compared with PAC-01 and PAC-02
PAC-01 is white powder with Al2O3 content of at least 30% and low insoluble matter. It is commonly used for drinking water treatment and high purity water clarification.
PAC-02 is yellow powder with Al2O3 content of at least 30% and insoluble matter of no more than 0.1%. It is suitable for industrial wastewater, municipal wastewater and general water treatment.
PAC-031 is yellow powder with Al2O3 content of at least 29% and a wider basicity range. It is commonly used for industrial wastewater, sewage treatment, high turbidity wastewater and cost effective coagulation.
For wastewater treatment projects where operating cost and stable clarification performance are both important, PAC-031 is a practical choice.
Packaging and Storage
Bluwat PAC-031 Poly Aluminium Chloride Powder 29% 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 high temperature and incompatible materials.
- Use the product promptly after opening.
Proper storage helps maintain powder quality, solubility and coagulation performance.
Why Choose Bluwat PAC-031
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 municipal and industrial wastewater treatment.
Bluwat PAC-031 is produced under stable quality control to support reliable coagulation performance and consistent supply.
With factory direct supply, 25 kg bag packaging, container loading experience and technical support, Bluwat can help customers select suitable PAC grades according to actual wastewater samples, treatment targets and operating cost requirements.
Conclusion
PAC-031 Poly Aluminium Chloride Powder 29% is a cost effective and practical coagulant for wastewater treatment. It helps improve turbidity removal, suspended solids reduction, floc formation, sedimentation and wastewater clarification.
For industrial wastewater, municipal sewage, high turbidity wastewater, textile wastewater, paper mill wastewater, mining wastewater and coal washing wastewater, PAC-031 provides flexible application and stable treatment performance.
Bluwat supplies PAC-031 yellow PAC powder with factory direct supply, export packaging and technical support for global wastewater treatment customers.










