Misunderstandings in The Use of Polyacrylamide Flocculant

Misunderstandings about the use of polyacrylamide flocculants. Many customers have the concept that the molecular weight and ionicity of polyacrylamide determine its effectiveness. The higher the price, the better the effect, etc. In fact, these views are one-sided. After reading this article, you will have a certain understanding of the misunderstandings in the use of polyacrylamide.

Pay attention to the use of polyacrylamide in sludge dehydration. There are many types of polyacrylamide, so the selection of the type is more important, because it is an important factor affecting the effect, and then it is the problem of the operation process after the selection. Operational Problems of Polyacrylamide Used in Sludge Dewatering 1. Water pressure problem, sometimes due to insufficient water supply pressure, the dissolution funnel of the material feeder cannot send the polyacrylamide agent into the preparation pool, resulting in blockage. The solution is to use a water pump to increase the water pressure. 2. The sludge dehydration polyacrylamide solution is recommended to be prepared and used immediately to prevent it from being left for too long and may affect the treatment effect. 3. When the container is cleaned, it should be cleaned in all aspects, so that the impurities sticking to the wall of the drum can be better cleaned up, and the drum can be given a balanced speed. 4. Regularly adjust the operating frequency of the dehydrator. When the dehydrator vibrates violently, it should be prohibited to feed again immediately, and the next step should be dredged first. 5. The concentration of sewage sludge is relatively high during water purification. At this time, it is best to let the sewage stand for a period of time, and then extract the clean solution above to increase the concentration of sludge for treatment.

Regarding the use of polyacrylamide, we often have many misunderstandings. The typical problem may be about the relationship between molecular weight, use effect and price. Sales staff who have been operating polyacrylamide for many years also have misunderstandings when communicating with customers. In the treatment of wastewater, for cationic polyacrylamide, everyone knows that the use effect is mainly related to the cationicity and not much to the molecular weight.

For anionic polyacrylamide amine, the higher the molecular weight, the higher the price and the better the effect. This view is wrong. Under normal circumstances, when we estimate molecular weight, we use the viscosity estimation method.

For wastewater, we used products with different degrees of hydrolysis to conduct experiments and found that the degree of hydrolysis has a great influence on the use effect and has no substantial relationship with the size of the molecular weight.

 

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