Brief description of the dangers of excessive use of polyaluminum chloride Poly aluminum chloride over the use of harm? What should we pay attention to when using polyaluminum chloride? Polyaluminum chloride purification materials in a dosage, but also have a scale to measure, otherwise the use of excess will have a negative impact, the following is the specific use of things to note, I hope we use the Help. 1, according to the different conditions of the raw water, before use, try 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. 2, the production by solid: water = about 1: 5 first mixed dissolved, 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. 3, dosing by the best dosage to vote. 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. 4, dosing facilities should be anti-corrosion. This product is suitable for all water treatment facilities.