PAC 30% Al2O3 Powder for Municipal Wastewater Treatment
Product Overview
PAC 30% Al2O3 Powder is a widely used water treatment coagulant for municipal wastewater treatment. It is also known as Polyaluminum Chloride powder, Poly Aluminium Chloride powder or PAC coagulant.
Municipal wastewater usually contains suspended solids, colloidal particles, organic matter, phosphorus, fine sludge particles and various impurities from domestic and industrial sources. These pollutants may affect sedimentation efficiency, effluent clarity and overall plant operation.
PAC powder helps destabilize suspended particles and colloids in wastewater. After dosing and mixing, these impurities form larger flocs, which can be removed by sedimentation, flotation or filtration.
Bluwat PAC powder is produced by spray drying technology and supplied in stable powder form. With high Al2O3 content, good solubility and strong coagulation performance, PAC powder is suitable for municipal sewage treatment plants, industrial wastewater pretreatment and water reuse systems.
Why PAC Is Used in Municipal Wastewater Treatment
Municipal wastewater treatment plants often face changing influent conditions. Rainfall, industrial discharge, seasonal temperature changes and population activities can all affect water quality.
When suspended solids and colloids are not removed efficiently, the clarifier may become overloaded and effluent turbidity may increase. PAC powder can support chemical coagulation and improve solid liquid separation.
In many municipal wastewater plants, PAC is used for:
- Turbidity reduction
- Suspended solids removal
- Phosphorus removal support
- Floc formation improvement
- Sludge settling improvement
- Effluent clarity improvement
- Pretreatment before filtration or reuse
PAC can be applied in primary treatment, secondary treatment support, tertiary treatment or emergency chemical treatment depending on the plant design and treatment target.
Key Advantages
PAC 30% Al2O3 Powder provides strong active content for efficient coagulation in municipal wastewater treatment systems.
PAC disperses quickly after dosing and reacts with suspended solids and colloidal particles to start floc formation.
The flocs formed by PAC can become larger and denser under proper mixing conditions, helping improve settling performance in clarifiers.
By removing turbidity and fine particles, PAC helps produce clearer treated water and supports downstream filtration or reuse processes.
PAC can support chemical phosphorus removal in wastewater treatment, especially when phosphorus control is required.
PAC powder can be used in municipal sewage, industrial wastewater entering municipal plants, mixed wastewater and tertiary treatment systems.
PAC is commonly used together with PAM flocculant. PAC works as the coagulant, while PAM helps enlarge flocs and improve sedimentation speed.
The powder form is easy to pack, store and ship. It is suitable for municipal water treatment projects and export supply.
Recommended PAC Grades
Bluwat supplies different PAC powder grades for different municipal and industrial wastewater treatment requirements.
For municipal wastewater treatment, PAC-02 and PAC-031 are commonly selected depending on water quality, turbidity level, phosphorus target and operating cost.
Municipal Wastewater Applications
PAC can be dosed before primary clarification to improve suspended solids removal and reduce the load on biological treatment.
When activated sludge settling becomes unstable or effluent turbidity increases, PAC can help improve floc formation and clarification.
PAC is widely used in tertiary treatment for polishing, turbidity reduction and phosphorus removal support before discharge or reuse.
PAC can be applied as a chemical coagulant to support phosphorus reduction in municipal wastewater treatment plants.
During rainy seasons, influent turbidity and flow may fluctuate. PAC dosing can help stabilize clarification performance.
When municipal systems receive industrial wastewater, PAC can help improve coagulation and reduce suspended solids and colloidal impurities.
PAC can be used before filtration, membrane treatment or reuse systems to reduce turbidity and protect downstream equipment.
Suggested Dosing Process
A typical municipal wastewater treatment process using PAC powder may include the following steps.
First, prepare PAC solution with clean water.
Second, dose PAC solution into wastewater under rapid mixing.
Third, allow PAC to fully contact suspended solids, colloids and phosphorus compounds.
Fourth, adjust pH if necessary according to plant operation and jar test results.
Fifth, add PAM flocculant when larger flocs and faster sedimentation are required.
Finally, separate the formed flocs through sedimentation, flotation or filtration.
The dosage should be determined by jar testing and adjusted according to influent turbidity, pH, alkalinity, phosphorus concentration, suspended solids and effluent target.
PAC and PAM Combination
PAC and PAM are commonly used together in municipal wastewater treatment.
PAC is used first as a coagulant. It status particle charge and starts micro floc formation.
PAM is used after PAC as a flocculant. It bridges small flocs into larger flocs and improves settling speed.
This combination can help improve sludge separation, reduce effluent turbidity and support stable clarifier operation.
The correct PAM type should be selected according to sludge characteristics and wastewater quality. In many municipal wastewater systems, anionic or cationic PAM may be used depending on the treatment stage and application goal.
Packaging and Storage
Bluwat PAC 30% Al2O3 Powder is packed in 25 kg bags with inner plastic bag and outer woven bag.
Storage recommendations:
- Store in a cool, dry and ventilated warehouse.
- Keep the product away from moisture and direct sunlight.
- Keep the bags sealed before use.
- Avoid contact with incompatible materials.
- Use the product promptly after opening.
Good storage conditions help maintain product solubility and coagulation performance.
Why Choose Bluwat PAC Powder
Bluwat Chemicals is a professional water treatment chemical manufacturer and exporter. We supply PAC powder, PAM flocculant, water decoloring agent, PolyDADMAC, Polyamine and other chemicals for municipal and industrial wastewater treatment.
With factory production capability, stable quality control and export experience, Bluwat can provide reliable PAC powder for wastewater treatment plants, contractors, distributors and industrial users.
For municipal wastewater projects, Bluwat can support product selection, jar test comparison and dosage optimization based on actual wastewater samples.
Conclusion
PAC 30% Al2O3 Powder is an effective coagulant for municipal wastewater treatment. It helps improve turbidity removal, suspended solids reduction, phosphorus removal support, floc formation and sedimentation performance.
For sewage treatment plants that need stable clarification and flexible chemical treatment, PAC powder is a practical and cost effective choice.
Bluwat supplies spray dried PAC powder in different grades for drinking water, municipal wastewater and industrial wastewater applications, with factory direct supply and technical support for global customers.