Can polyaluminum chloride be used in water treatment?

In this study, synthesis and speciation of polyaluminum chloride (PAC) for application in water treatment was investigated using a colorimetric speciation method. It was possible to produce stable preparations of PAC solutions in which a relatively stable cationic polymer predominated.

Can a cationic polymer predominate PAC solution?

It was possible to produce stable preparations of PAC solutions in which a relatively stable cationic polymer predominated. The mode of preparation has a dramatic effect on the composition of PAC preparation.

Which polyvalent ions enhance the performance of polyaluminum chloride in water treatment?

Polyvalent anions including sulfate and phosphate are known to enhance the performance of polyaluminum chloride in water treatment. The ions can be incorporated into the products of the present invention either before, during, or after the process of raising the basicity.

Why is polyaluminum chloride a good coagulant for water treatment?

Polyaluminum chloride (PAC) is highly effective coagulant for water treatment over conventional coagulants because of low dosage requirement, shorter flocculation time, smaller amount of sludge, high efficiency and low aluminum residual in treated water .

Which ions stabilize polyaluminum chloride composition?

The aluminum salts also generally have some water of hydration associated with them. Calcium ions are known to stabilize polyaluminum chloride compositions. Said calcium ions may be introduced to products of the present invention by adding a variety of calcium salts.

Can polymeric PAC be used for water treatment?

Several researchers have investigated the synthesis, of PAC and its performance for water treatment. The results shows that various polymeric species of PAC yield (Al b species) are obtained and different performance efficiencies for water treatment are reported in the literature [21, 24].