The reason for this phenomenon is generally the initial low PH value. Treatment is not in the flocculants work hard, but adjust the PH value after adding alkali
This should be a beaker experiment, the water quality is not the same turbidity, usually take 1000ml of waste water and then add 20g poly aluminum slowly add up
Poly aluminum chloride most of the Gongyi production, you want good quality can be found Gongyi Le Bang, and now Le Bang is engaged in activities, 999 vehicle f
It can be dripped, hydrolyzed and precipitated after it is added to water and reacts with sulfuric acid.
(Such use before, simple filter can) be considered relatively low cost. Specific increase depends on how much you use AlCl3, and probably 5 ~ 20ppm, but also ne