Is polyaluminium chloride a coagulant?

Water Supply (2022) 22 (3): 2793–2802. Polyaluminium chloride (PAC) with different basicity is used as a coagulant in most drinking water treatment plants (WTP). The aluminium concentration in PAC and its hydrolysis mechanism varied with the basicity of PAC.

What is poly Aluminium chloride (PAC)?

Poly aluminium chloride (PAC) is one of the most efficient water treatment chemicals utilized today. It is widely used in both potable water and wastewater treatment because it provides high coagulation efficiency and it has the widest pH and temperature application ranges compared to other water treatment chemicals.

How to use polyaluminium chloride PAC coagulant in sewage treatment process?

Most industries need to use polyaluminium chloride PAC chemical in the sewage treatment process. The precipitation rate of PAC chemical is much faster and the precipitation effect is better. The use method of PAC coagulant is to dissolve it in a certain proportion and then add it to water.

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.

What are the advantages of Pac coagulant?

For that PAC coagulant has the advantages of less optimal dosage and less sludge production, which can help to save costs. The polyaluminium chloride for sale in Chemate can be divided into four types according to their AL203 content and basicity.

Why is PAC a superior coagulant than alum?

Here comes the role of basicity of a coagulant and explains why PAC is a superior coagulant than alum. Basicity is a quantitative measure of how many hydroxyl ions are included in the structure of a polyaluminium coagulant. The higher the basicity of a coagulant, the lower the impact it will have on dosed water pH.