How does poly Aluminium chloride work?

Poly Aluminium Chloride is a highly efficient water treatment chemical where it works as a coagulant to extract and clump together contaminants, colloidal and suspended matter. This results in the formation of floc (flocculation) for removal via filters. The below image showing coagulation in action illustrates this process.

Is polyaluminium chloride corrosive?

Polyaluminium Chloride is an acidic solution. Classified as corrosive at higher concentrations, it is typically yellow in colour. It is miscible with water at all concentrations although dilute solutions hydrolyse to precipitate Aluminium Hydroxide (Al (OH)3).

Is polyaluminium chloride a safe coagulant?

Polyaluminium Chloride is a safer alternative to several other chemical coagulants. For instance, aluminium sulphate has been widely used as coagulant for many years. It removes contaminates and general turbidity from water during the water treatment process.

Why is polyaluminium chloride important during water treatment process?

Polyaluminium chloride has several features important during water treatment process, and the features are outlined in the following list:- PAC helps speeding up the process of flocs formation, and the settling of the flocs at the bottom. The process makes flocs that are formed easier to be filtered out.

What is polyaluminium chloride?

Polyaluminium chloride is the one of the first chemicals that are added in the water during the coagulation process. The compound is highly charged, where it reacts and neutralizes the negative charge on dirt and other dissolved particles. This will allow the compound to bind together to form larger particles.

What is poly Aluminium chloride (PAC)?

Poly Aluminium Chloride (PAC) is most commonly used in the water treatment industry as a coagulant. It is characterised by the degree of basification – the higher this number the higher the polymer content which equals a more efficient product in the clarification of water products.