... hygroscopicity. 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 ... conditions, get the best use condition and the best dosage for the best handling effect. 1, Before using, put the ... -5% is also can be used, 5-10% is fit for industry waste water treatment. 2, As to the dosage, it is determined ...