What is polyaluminium chloride?

Polyaluminium chloride, also written as poly aluminium chloride, is an inorganic polymer coagulant used for water treatment. Take the first letter of words as abbreviation, it is refered to as PAC chemicals, can be considered as one of the best coagulants.

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.

Is polyaluminium chloride water soluble?

Polyaluminium Chloride is a water chemical made up of the elements aluminium, oxygen, hydrogen, and chlorine. Polyaluminium Chloride is also known as Aluminium Chloride Hydroxide and is abbreviated as PAC. It is a yellow colored, water soluble solid with the chemical formula [Al2 (OH)nCl6-n]m.

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.

What are the chemical requirements of polyaluminium chloride?

The chemical requirements of both forms of polyaluminium chloride are given below. Powdered PolyAC shall contain water-soluble aluminium of not less than 14 ± 0.3% w/w as Al, or 30% w/w as Al2O3. Liquid PolyAC shall contain water-soluble aluminium of not less than 2.16% w/w as Al or 10% w/w as Al2O3.