PAM) is a water-soluble polymer which is easily soluble in water and insoluble in most organic solvents. A certain amount of PAM is added to the clear water, and the solution is a transparent liquid. If an excess of PAM is added, the solution will become a clear gel and lose fluidity. If an excessive amount of PAM is added at a time, PAM will form hydrazine in the water and will not continue to dissolve.

Dissolve PAM should pay attention to:

1) The water in which the polyacrylamide is dissolved should be cleaned of water. There should be no impurities in the water, and it should not be dissolved by the sewage. This will reduce the dissolution and flocculation effect of PAM.

2) Inject 1/3 of the water into the dissolution tank, start stirring, then add the PAM dry powder, add the dry powder and add water until the dissolution tank is filled up.

3) When adding PAM dry powder, it should be slowly added to the water and can not be poured. This will form bismuth in the water, can not be dissolved again, and waste materials.

4) The stirring speed should not be too fast, the speed is fast, the molecular chain of PAM will be cut short, and the use effect will be reduced. The general speed is controlled at 60 rpm line speed.

5) The concentration of PAM is controlled at 1--3‰, the concentration is too low, and it can not effectively function. If the concentration is too high, the molecular chain can not be fully extended, or a gel is formed, which will reduce the use effect. Therefore, When using PAM, the concentration of PAM can be adjusted as needed.