Poly Aluminium Chloride (PAC) is a highly efficient inorganic polymer coagulant widely used in water treatment systems. It works by removing impurities such as suspended solids, bacteria, and organic matter from water.
Chemically, PAC is represented as:
[Al₂(OH)nCl₆–n]m
It is available in:
- Powder form (most common in Nairobi)
- Liquid form
- Flake form
PAC is preferred over traditional coagulants like alum because it:
- Works faster
- Requires lower dosage




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