It is very difficult to dehydrate for biochemical sludge owing to its high organic content and strong hydrophilic colloid. So city and industrial wastewater commonly used activated sludge treatment. According to the nature of the sludge, the appropriate cationic could be applied, which can be effective in the sludge into the filter before the gravity sludge dewatering. The dehydration will result to floc large, non-stick filter cloth, in the filter does not disperse, with less, dehydration high efficiency, mud cake moisture content of 80% or less. Polyacrylamide treatment of sludge for the role of dehydration Principle: The flocculants prepared into the aqueous solution into the waste water, will produce a compressed double layer so that the suspension of suspended solids in the stability of the particles, the mutual aggregation of particles to increase particles to form flocs, alum. Flocculation grows to a certain volume after the action of gravity from the water phase precipitation, ...

The viscosity of polyacrylamide aqueous solution is influenced by the solution viscosity, ph value, shear rate and the relative molecular polymer.  Polyacrylamide solution viscosity and concentration are similar to the logarithmic relationship. High molecular weight polyacrylamide concentration is difficult to deal with when the concentration is over 8%. Increasing the temperature could decrease the viscosity, but the effect is not significant. The viscosity of nonionic polyacrylamide solution is not affected by the pH value. However, when the PH value is over 9, the viscosity of polyacrylamide is quickly increased due to hydrolysis. At this time, the impact of PH value was revealed. Pure polyacrylamide is easy to hydrolyze. In the aqueous solution, when the PH value from acid to alkaline range, the non-ionic amide to anionic carboxyl, carboxyl negatively charged and produce repulsion, resulting in macromolecule stiffness, increasing the friction between molecules, viscosity and th...

Testing is always applied before formal using polyacrylamide in wastewater treatment. If the amount is too low, the product does not work, and if the amount is too high, there will be opposite reaction. The reason is when more than a certain concentration, polyacrylamide can not only have flocculation effect, but from the dispersion and stabilizing effect. In the choice of polyacrylamide models, following factors could be considered: 1, sludge is the inevitable product of sewage treatment. First of all we should understand the source of sludge, nature, composition and solid content. According to the sludge contains the main components of different sludge can be divided into organic sludge and inorganic sludge. In general, cationic polyacrylamide for the treatment of organic sludge, anionic polyacrylamide for the treatment of inorganic sludge, alkaline is very easy to use cationic polyacrylamide, and acidity should not use anionic polyacrylamide, when the solid content of mud is high...

Sinofloc series polyacrylamide is used in wastewater treatment with anion and cationic type, which can be used in flocculation precipitation and sewage treatment. Generally speaking, the higher the ion degree is, the more compact the sludge formation will be. Our anionic products can be used for flocculation and precipitate the suspended solids in sewage. Our cationic products are generally used in sludge treatment press, which will not clog the filter cloth, and the formation of sludge is more compact. Sludge is the main content of urban sewage and is a serious pollution source. Our technical staff will help customers test the nature, composition and solid content of the sludge and select the best products for this application. In general, cationic polyacrylamide  is used for the treatment of organic sludge, anionic polyacrylamide is for inorganic sludge. It is not suitable to use cationic polyacrylamide when it is very alkaline, but it is not suitable to use anion polyacr...