PAC Custom

What is PAC (Poly Aluminum Chloride)

PAC is a coagulant - a chemical used to bind fine particles, colloids, and solutes in water to form larger flocs (clumps) that are easily precipitated or filtered.
PAC is a type of polymeric aluminum salt, usually used in:

• Drinking water treatment

• Industrial wastewater treatment

• Swimming pool water treatment

• Pre-treatment process in industry (e.g. textile, pulp & paper, etc.)

What is Custom PAC

"Custom PAC" means a PAC that is specially formulated by a manufacturer or laboratory to match the characteristics of raw water or specific process needs.

For example:

• Raw water pH is too low or high → a PAC with a specific optimum pH is made

• High metal or organic content → special components are added to improve flocculation effectiveness

• Different end goals (drinking water vs industrial wastewater) → Al₂O₃ concentration, molecular weight, or degree of polymerization are adjusted

Examples of PAC Types and Customizations

Advantages of Custom PAC

• More efficient than alum (Al₂(SO₄)₃) because it requires less dosage.

• Produces less sludge.

• Can be adjusted to be stable in various water conditions (pH, TSS, color, metals, etc).

• Lowers operating costs due to improved settling and filtration efficiency.

Conclusion

Custom PAC = a special version of Poly Aluminium Chloride formulated to optimize the coagulation-flocculation process according to the characteristics of the water being treated.
This product is usually developed through laboratory tests (jar tests) before being applied in large-scale water treatment systems.