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.

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 is poly Aluminium chloride (PAC)?

PAC is a range of versatile inorganic polymers, and it is characterized by strength & basicity. Poly aluminium chloride has more advantages than traditional coagulants, like alum or iron salts. It is pre-neutralized & has a charged density higher than traditional. In industry and municipal use for water treatment & purification process.

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.

What is Pac water treatment chemical?

PAC water treatment chemical has a wider range of applications and is suitable for more types of water quality. 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.