Yellow PAC Powder Coagulant for Industrial Effluent Treatment
Product Overview
Yellow PAC Powder Coagulant is a spray dried Polyaluminum Chloride powder designed for industrial effluent treatment and wastewater coagulation.
Industrial effluent often contains suspended solids, colloidal particles, fine impurities, organic matter, color bodies, sludge particles and process residues. These pollutants may remain stable in water and are difficult to remove by natural settling alone.
Yellow PAC powder works as an inorganic polymer coagulant. After dosing into wastewater, it helps neutralize the surface charge of suspended particles and colloids. These particles then gather into larger flocs, which can be separated from water by sedimentation, dissolved air flotation or filtration.
Bluwat supplies yellow PAC powder grades, including PAC-02 and PAC-031, for industrial effluent treatment, municipal wastewater treatment, sewage treatment and general water clarification applications.

Why Yellow PAC Powder Is Used for Industrial Effluent
Industrial effluent treatment requires flexible and stable chemical performance because wastewater quality can change greatly between different factories and production processes.
Textile plants, paper mills, mining operations, food processing plants, chemical factories and metal processing plants may all produce effluent with different levels of turbidity, suspended solids, color and organic impurities.
Yellow PAC powder is commonly used because it provides effective coagulation performance with practical treatment cost. It can help reduce turbidity, remove suspended solids, improve floc formation and support clearer effluent.
In many industrial wastewater systems, yellow PAC powder is used before PAM flocculant. PAC starts the coagulation process, while PAM enlarges the flocs and improves settling speed.
Key Advantages
Recommended Yellow PAC Grades
PAC-02 is often selected when low insoluble matter and strong active content are required.
PAC-031 is often selected for large volume industrial wastewater, high turbidity wastewater and cost sensitive effluent treatment projects.
Main Applications
How Yellow PAC Powder Works
Yellow PAC powder is normally dissolved in clean water before dosing.
After the prepared PAC solution is added into industrial effluent, it disperses quickly under rapid mixing. PAC contacts suspended solids, colloidal particles and fine impurities.
During chemical coagulation, PAC neutralizes the surface charge of these particles. Once the particles lose stability, they begin to gather and form micro flocs.
During slow mixing, the micro flocs grow into larger and stronger flocs. If PAM flocculant is added after PAC, the flocs can become larger and settle faster.
Finally, the flocs are separated from water through sedimentation, dissolved air flotation or filtration.
Suggested Dosing Process
A common industrial effluent treatment process using yellow PAC powder includes the following steps.
First, test the wastewater quality, including pH, turbidity, suspended solids, color and treatment target.
Second, prepare yellow PAC powder solution with clean water.
Third, dose PAC solution into wastewater under rapid mixing.
Fourth, allow PAC to fully contact suspended solids and colloidal particles.
Fifth, adjust pH if necessary according to jar test results.
Sixth, add PAM flocculant under slow mixing if larger flocs and faster sedimentation are required.
Finally, separate the formed flocs through sedimentation, DAF or filtration.
The actual dosage should be confirmed by jar testing. Different industrial effluent sources may require different PAC dosage, PAM type, pH condition and mixing time.
Yellow PAC Powder and PAM Combination
Yellow PAC powder and PAM flocculant are commonly used together in industrial effluent treatment.
PAC works as the coagulant. It destabilizes fine particles and forms micro flocs.
PAM works as the flocculant. It bridges micro flocs into larger flocs and improves settling speed.
The recommended dosing sequence is PAC first and PAM second.
For wastewater with high color or stable dissolved pollutants, a water decoloring agent may be used before PAC depending on the wastewater condition and jar test result.
PAC-02 and PAC-031 Selection Guide
PAC-02 is suitable for industrial wastewater projects that require 30% Al2O3 content, low insoluble matter and stable coagulation performance.
PAC-031 is suitable for industrial wastewater, sewage treatment and high turbidity effluent where cost effective coagulation is important.
For customers who are not sure which yellow PAC grade to choose, jar testing is recommended. Bluwat can provide product selection support based on wastewater samples, treatment targets and operating requirements.
Packaging and Storage
Bluwat Yellow PAC Powder Coagulant 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.
- Proper storage helps maintain powder quality, solubility and coagulation performance.
Why Choose Bluwat Yellow 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 municipal and industrial wastewater treatment.
Bluwat yellow PAC powder 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 industrial effluent samples and treatment requirements.
Conclusion
Yellow PAC Powder Coagulant is a practical and effective chemical for industrial effluent treatment. It helps improve turbidity removal, suspended solids reduction, floc formation and solid liquid separation.
For textile wastewater, paper mill wastewater, mining wastewater, coal washing wastewater, food processing wastewater, chemical wastewater and mixed industrial effluent, yellow PAC powder provides flexible application and stable treatment performance.
Bluwat supplies PAC-02 and PAC-031 yellow PAC powder grades with factory direct supply, export packaging and technical support for global industrial wastewater treatment customers.










