Polyacrylamide (PAM) and polyaluminum chloride (PAC) are commonly used chemicals in the field of water treatment. They are often used in conjunction to improve water treatment and purify water quality.
PAM is a polymer with good adsorption properties and thickening effect. In water treatment, PAM is mainly used for the settling and dewatering of suspended solids. It is able to form complexes with suspended solids and impurities in the water, which causes them to settle. In addition, PAM can also improve the fluidity of the water body, reduce the viscosity of the water, and improve the sedimentation efficiency.
PAM is very versatile. In addition to the field of water treatment, it is also widely used in industrial fields such as oilfield development, pulp and paper, and mining refining.
PAC is an inorganic agent with good flocculation and precipitation. It is mainly composed of aluminum ions and chloride ions, and has strong electrical neutrality and association ability. In water treatment, PAC is mainly used for coagulation and flocculation. It is able to quickly condense suspended solids and colloidal particles to form large particulate matter, which facilitates subsequent precipitation and filtration.
PAC has the advantages of simple structure, convenient operation and stable effect. It is particularly effective in the treatment of water bodies with high concentrations of suspended solids, e.g. in the treatment of sewage, industrial wastewater, etc.
The combination of PAM and PAC can give full play to their respective advantages to further improve the effectiveness of water treatment and purify water quality.
Enhance flocculation effect: The combination of PAM and PAC can form a more stable and solid floc, effectively improving the coagulation rate and sedimentation efficiency of suspended solids and colloidal particles.
Increase the sedimentation velocity: PAM can improve the flow of water and reduce the viscosity of water, thereby increasing the sedimentation velocity of suspended solids. PAC can quickly condense suspended solids and colloidal particles to form large particulate matter, which is conducive to subsequent precipitation and filtration.
Reduced dosage: The combination of PAM and PAC can reduce the amount of chemicals used and reduce the cost of water treatment. The adsorption and thickening effect of PAM can increase the gelling effect of PAC, thereby reducing the dosage of PAC.
Improved water treatment efficiency: PAM and PAC can be used together to quickly purify water and reduce turbidity and suspended solids content. In some complex water treatment processes, such as coagulation and sedimentation, membrane treatment, etc., the combination of PAM and PAC can significantly improve the treatment efficiency.
The combination of polyacrylamide and polyaluminium chloride is a highly effective method of water treatment. Their unique properties complement each other to improve water treatment and purify water quality. This method is widely used in various fields, such as drinking water treatment, industrial wastewater treatment, agricultural irrigation, etc. A more energy-efficient, environmentally friendly and sustainable water treatment process can be achieved through reasonable proportioning and use methods.