Polyaluminum chloride is a water-soluble inorganic polymer coagulant. Due to the bridging effect of hydroxide ions and the polymerization of polyanions, it is an inorganic polymer water treatment agent with larger molecular weight and higher charge. The dosage of polyaluminum chloride agent is 3-40 g/ton for liquid products and 1-15 g/ton for solid products, which is determined by the user according to the mixing test and production test.

According to the different conditions of raw water, you can do a small test to find the best dosage before using polyaluminum. In order to facilitate the calculation, the small test solution is configured according to the mass-volume ratio (M/V), generally 1% is better. If a 1% solution is prepared: weigh PAC1g, put it into a washed 100ml graduated cylinder, add water to dilute to 100 marks after it is dissolved, and shake it well. If it is used in production, first mix and dissolve the solid with clean water, then add water to dilute to the required concentration. The liquid can be directly diluted according to the required concentration.

It should be noted that water treatment chemicals of different manufacturers or different brands cannot be mixed, and must not be mixed with other chemicals; the original solution and diluent are slightly corrosive, but lower than other various inorganic coagulants; the product is effectively stored Period: half a year for liquid and one year for solid. The solid product can still be used after being damp. The use methods of polyaluminum ferric chloride, polyferric sulfate and polyaluminum are similar, and the specific use amount is determined by the quality of the water to be treated.