Poly aluminium chloride, usually called PAC, is a common coagulant for drinking water treatment, industrial wastewater treatment, textile wastewater color reduction and pretreatment systems. The right PAC grade depends on water quality, treatment target and operating cost, not only price per ton.
Key PAC selection factors
| Factor | Why it matters | Buyer note |
|---|---|---|
| Al2O3 content | Indicates active alumina level | Compare grade and application requirement |
| Basicity | Affects coagulation behavior and pH impact | Confirm suitable range by jar test |
| Water-insoluble matter | Impacts clarity and residue | Lower values are usually preferred for stricter applications |
| Powder or liquid | Affects logistics and dosing system | Confirm storage, dissolution and handling conditions |
| Application | Drinking water, industrial wastewater and textile wastewater may need different grades | Do not use one specification for every water source |
How to test PAC before purchase
- Request the specification sheet, COA and SDS/MSDS.
- Run jar tests with the real water sample.
- Compare turbidity removal, floc size, settling speed and sludge volume.
- Check whether pH adjustment or a polymer aid is needed.
- Compare total treatment cost, not only purchase price.
Common PAC applications
- Municipal and drinking water clarification.
- Textile wastewater color and turbidity reduction.
- Paper mill wastewater pretreatment.
- Industrial wastewater coagulation.
- Pretreatment before filtration or biological treatment.
FAQ
Is higher Al2O3 always better?
No. Higher active content may reduce dosage, but the best result depends on water quality, pH, basicity and process conditions.
Can one PAC grade work for all wastewater?
No. Textile wastewater, drinking water and industrial wastewater may require different PAC grades or dosage strategies.
What should buyers ask before importing PAC?
Ask for specification, COA, SDS/MSDS, packaging details, loading port, MOQ, sample policy and recommended jar test method.
For product specifications and export quotation, visit HydroChemix PAC or contact HydroChemix.