What should be paid attention to when using polyacrylamide

1. The size of flocs: Too small flocs will affect the drainage speed, and too large flocs will bind more water and reduce the degree of mud biscuit. After selecting polyacrylamide to allow
Group size.

2. Sludge characteristics: According to different properties, sludge can be divided into organic and inorganic sludge. Amines are used to treat organic sludge, and the relative anionic polyacrylamide flocculant is used for inorganic sludge. Cationic polyacrylamide is used when the alkalinity is strong, and amide is not suitable for strong acidity. When the solid content is high, the sludge Usually, the amount of polyacrylamide is also large.

3. Flocculation strength: Flocculation should remain stable and not broken under the action of shearing. Selection of appropriate molecular structure contributes to floc stability

4. Ionicity of polyacrylamide: For dewatered sludge, different ionic coagulants can be used for selection in a small test first, and the best and most suitable polyacrylamide can be selected for the best effect, and the dosage can be increased. Less, saving money.

5. Dissolution of polyacrylamide: good dissolution can give full play to the flocculation effect. Sometimes it is necessary to speed up the dissolution rate. At this time, the concentration of the polyacrylamide solution can be considered as.