What is polyaluminium chloride used for?

Polyaluminium chloride is used as a primary coagulant in the treatment of drinking water. It is effective over a range of pH values. It is particularly effective on some waters and usually requires a lower dose than alum.

When did polyaluminum chloride become a drinking water treatment chemical?

Polyaluminum chloride was endorsed by the NHMRC for use as a drinking water treatment chemical in 1979. The revision undertaken in 2003 did not change the status of this chemical for the treatment of drinking water. ANSI (American National Standards Institute)/AWWA (American Water and Wastewater Association) Standard no B408-98.

Does polyaluminum chloride affect drinking water quality?

Residual chloride will be present, but at low levels that do not adversely affect drinking water quality. Polyaluminum chloride was endorsed by the NHMRC for use as a drinking water treatment chemical in 1979. The revision undertaken in 2003 did not change the status of this chemical for the treatment of drinking water.

How effective is polyaluminium chloride?

It is effective over a range of pH values. It is particularly effective on some waters and usually requires a lower dose than alum. Polyaluminium chloride (PACl), ext {Al}_ {2}ext { (OH)}_ {3}ext {Cl}_ {3} Al2(OH)3Cl3, is also known as aluminium hydroxy chloride or basic aluminium chloride.

Should PACL be used in drinking water treatment?

When employed in drinking water treatment, PACl should be used in such a way that any contaminant or by-product formed by the use of the chemical does not exceed guideline values in the Australian Drinking Water Guidelines.

Is polyaluminium chloride better than polyelectrolyte – alum-based coagulation?

At the Barekese Water Treatment Plant in Ghana, an alternative, the polyelectrolyte – polyaluminium chloride (PAC) is also used in coagulation but limited information is available on the operating conditions required to achieve better performance than alum-based coagulation.