What should I pay attention to when using polyaluminum chloride? Polyaluminum Chloride precautions and hazards: First, according to the different conditions of raw water, before using polyaluminium chloride can do a small test to get the best dose. For ease of calculation, small test solution configuration weight by volume ratio (W / V), usually 2 ~ 5% with good. If with 3% solution: PAC3g, Sheng into the 200ml cylinder of clean, add water about 50ml, to be dissolved and then diluted with water to 100ml scale, shake well. Polyaluminum chloride second, dosing according to the best polyaluminum chloride dosage dosing. And pay attention to observe the adjustment in operation, such as see the settling pond alum less, Yuzhu big, the dosage is too small, see the precipitation of alum large and turn up, Yuzhuo high, the dosage is too large, it should be appropriate Adjustment. Polyaluminum chloride prices third, production by solid: water = about 1: 5 first mixed dissolved, then add water diluted to 2 ~ 3% (W / V) solution can be. Less than 1% solution is easy to hydrolyze, will reduce the use of effect, too high concentration can easily lead to waste. Fourth, dosing facilities should be preserved. This product is suitable for all water treatment facilities. All in all, the amount of PAC is just the right amount to use; the excess of chemical products in our life is harmful to us, as is PAC, the appropriate is good, excessive PAC will have a certain The harm.