What is polyaluminum chloride coagulant?

1. Introduction Polyaluminum chloride (PAC) coagulant has been developed and used in water and wastewater treatment since the 1980s throughout the world (Jiang, 2001). PAC is made by partial hydrolysis of acid aluminum chloride solution using a specific reactor.

What is polyaluminium chloride (PAC)?

Polyaluminium chloride (PAC) is a widely used water treatment chemical. It has a wide range of PH adaptation and it is not easy to produce color or other side effects. After the use of poly aluminum chloride, the content of iron, manganese and other heavy metals in water is low, which has a little corrosive effect on the equipment.

Why is polyaluminum chloride used in water treatment?

The application of poly aluminum chloride in water treatment can ensure the quality of water sources to a certain extent and reduce the harm to human health. At present, polyaluminum chloride water treatment is not only used in industrial sewage but also widely used in urban sewage and drinking water treatment. 2.

What is yellow Pac chemical?

Yellow PAC chemical are mainly used in sewage treatment and drinking water treatment. The raw materials are calcium aluminate powder, hydrochloric acid, bauxite. The production process adopted is the plate and frame filter press process or the spray drying process.

Can poly aluminum chloride be applied to sewage treatment?

It can be applied to sewage treatment because it has a wide range of application to PH value and short settling time. The application of poly aluminum chloride in water treatment can ensure the quality of water sources to a certain extent and reduce the harm to human health.

How to make polyaluminium chloride powder?

The method using aluminum chloride powder as raw material to produce polyaluminium chloride powder is most commonly used. It can be prepared by boiling pyrolysis with crystalline aluminum chloride at 170℃, adding water for curing and polymerization,and then curing and drying to get PAC powder.