... 2, Usage It is widely used in water treatment of drink water, industry water, various industrial waste water, urban sewage, sludge dewatering, etc. 3,Using method ... coagulation. As to water factory, 2-5% is also can be used, 5-10% is fit for industry waste water treatment. 2, As to ... determined by weight ratio of 1:3. 3, During use, pump the prepared liquid into the meter tank, mix the liquid ...