Polyaluminium chloride(aluminium chlorohydrate) also simply called PAC, is a new kind of high efficient inorganic polymer flocculant.
PAC is used in deodorants and as a coagulant in water purification. This compound is preferred in some cases because of its high charge, which makes it more effective at destabilizing and removing suspended materials than other aluminium salts.
CAS No.: 1327-41-9
Using PAC as flocculant, the speed of flocs forming and settling is quick. Flocs formed is easy to filter
Comparing to aluminium sulfate flocculant, the quality of water treated with PAC is better; the total cost reduced by 15%~30%, and the solubility is better.
It can be applied to water with broad pH range. The floc function valid in water of pH 5 to pH 9
Comparing to inorganic flocculants, PAC is suitable for water of broad temperature, and is functional in low temperature water. It reduces less basicity less, so less or no basifier needed.
There is fewer salts in water treated with PAC, this is good for high purity water purifying and ion-exchange treatment
The corrosivity of PAC is lower, easy to transfer, handle and operate.
Function and uses: This product is mainly used in the purification of drinking water and treatment of industrial wastewater, (such as oily waste water, waste water of printing & paper mill, etc.) and special water treatment, (such as radioactive material, lead (Pb + +), Cr + +, highly toxic Heavy metals and fluorine (F), etc.). It is widely used in precision casting, food and leather, etc.
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