Industrial name: Poly (aluminum chloride) | (PAC (PolyAluminium Chloride
Chemical formula: AL2 (OH) n CI6
Degree of purity: AL2O3 30% min
Other names: Hydrated aluminum chloride
What is polyaluminum chloride?
The process of concluding has a special place in the refining industry. Aluminum sulfate (alum) and chlorophyll are the most common primary coagulants used in water purification to remove turbidity.
In recent years, poly aluminum chloride, which is briefly called the Pack, has been widely used as a substitute for two old coagulants of aluminum sulfate and chlorophyll. Aluminum chloride (PACK) has now become one of the most common coagulants used in sewage and water treatment in countries such as the United States, Canada, China, Italy, France and the United Kingdom. In Iran, many industries have used this substance as a substitute for old coagulants;
Poly (aluminum chloride) is provided in both solid and liquid form. Solid poly (aluminum) chloride is a powder or crystal and has a color ranging from white to pale yellow to various grades.
Polymer Chloride Performance Mechanism:
The performance of old coagulants is unstable. Which is done by compressing a double electric layer around the colloidal particle. While, poly aluminum chloride performs instability through adsorption at the surface of the colloidal particle and the creation of particle-polymer-particle bond bridges. This mechanism increases the rate of particle instability, resulting in faster particle growth and eventually improved separation.
Polyvinyl chloride application:
The main applications of PAC are:
- Purification of drinking water
- Treatment of sewage and waste water from chemical plants and oil and petrochemical industries
- Urban wastewater treatment
- Treatment of wastewater and agricultural waste
- Use in paper and cellulose industries
- Use in textile, leather and leather industries