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. The size of floc can be adjusted by selecting the molecular weight of polyacrylamide.
2..Sludge characteristics: The first point is to understand the source, characteristics, composition and proportion of sludge. According to different properties, sludge can be divided into organic and inorganic sludge. Cationic polyacrylamide is used to treat organic sludge, and the relative anionic polyacrylamide flocculant is used for inorganic sludge. Anionic polyacrylamide is used when the alkalinity is strong, and anionic polyacrylamide is not suitable for strong acidity. The solid content When the sludge is high, the amount of polyacrylamide is usually large.
3.Flocculation strength: Flocculation should remain stable and not broken under the action of shearing. Increasing the molecular weight of polyacrylamide or selecting an appropriate molecular structure will help improve the stability of flocs.
4.Ionicity of polyacrylamide: For dewatered sludge, flocculants with different ionicity can be selected through a small test first, and the best suitable polyacrylamide can be selected, so that the best flocculant effect can be obtained, and the To minimize the amount of dosing and save costs.
5. Dissolution of polyacrylamide: good dissolution can give full play to the flocculation effect. Sometimes it is necessary to speed up the dissolution rate, then consider increasing the concentration of the polyacrylamide solution.
In fact, when treating sewage, for some sewage, the use of a single flocculant cannot achieve the effect, and the two must be used in combination. The use of inorganic flocculant PAC and polyacrylamide composite flocculant to treat sewage will achieve better results. effect, but pay attention to the order when adding potions, if the order is not correct, the effect will not be achieved.
Post time: Feb-10-2023