Polyacrylamide has good flocculation and sedimentation effect and is loved by customers.And it is often used in the treatment of sewage, and the effect is obvious. So what are the benefits of using polyacrylamide in the treatment of sewage in urban life?

The removal of low-turbidity fine mud suspended solids from some industrial wastewater and urban domestic sewage has always been one of the focus of research in the water treatment industry.The smaller the particle size in the sewage, the more stable the suspension, and the more difficult the coagulation treatment is.When the water contains clay, montmorillonite and other substances, it is very easy to mud in the water, making the surface potential larger, and the clay particles are always in a dispersed state due to repulsion, making it difficult for the suspension to settle.In addition, the small number of particles in the low-turbidity water reduces the rate and probability of particle collision, which comprehensively affects the coagulation effect.This is the main reason why the coagulation treatment of low-turbidity fine mud suspension is difficult.

In previous research and industrial applications, inorganic agents (such as polyaluminum chloride) are generally used for the treatment of low-turbidity fine mud suspensions. This is mainly because inorganic agents are easy to disperse in water, and appropriate hydraulic conditions can act on the surface of the particles, and satisfactory turbidity removal effect is obtained.However, it also has defects, such as the formation of small flocs, slow sedimentation rate, and correspondingly long sedimentation time, which affects its overall treatment effect. In addition, the high metal ion content has harmful effects on microorganisms, so the treatment of some wastewater should limit the use of inorganic agents.

In view of the problems in the coagulation treatment of low-turbidity fine mud suspension, polyacrylamide is used as a flocculant, and the effect of sewage treatment varies according to the state of the treated raw water.The type, size, concentration and PH of suspended solids in raw water will vary depending on the water quality.Therefore, in order to obtain the best results, we need to do test selection according to the actual situation on the site, and select the best use category and model of polyacrylamide for sewage to achieve the best sewage treatment state, which can not only improve the treatment efficiency of sewage treatment plants, but also reduce the operating cost of water treatment in enterprises.