High purity polyacrylamide is known as a variety of additives, has been used in many industries. Its main function is to use flocculant sedimentation agent and sludge dehydrating agent in sewage treatment process.
High purity polyacrylamide is water-soluble polymer, solid polyacrylamide before use to dissolve into tap water with a glue-like liquid can be used, in the configuration of solid polyacrylamide process is actually polyacrylamide curing process, so as to make its molecular chain unfold, in order to play its strong cohesion effect. To fully dissolve is not easy, in the process of dissolution should pay attention to the following matters :1, must use clean water (such as tap water)
2, the concentration of dissolution is recommended to be controlled at 0.1%-0.3%.
3. When dissolving, the high purity polyacrylamide should be added to the stirring water phase slowly and evenly. The stirring speed should not be strong (the speed of the front end of the stirring blade should be controlled below 8m/ s), so as not to reduce the cutting force of polyacrylamide; If the feed is too fast, it will also form a clump, creating a fisheye. 4. The water temperature should not exceed 60°C.
5, do not use iron to dissolve the solution to prevent degradation pay attention to the above points, can make high purity polyacrylamide more effective play its function.
Two, understand the source of sludge
Sludge is the inevitable result of sewage treatment. First, we should understand the source, properties, composition and solid content of the sludge. According to the main composition of sludge, sludge can be divided into organic sludge and inorganic sludge. In general, cationic polyacrylamide is used to treat organic sludge and anionic polyacrylamide is used to treat inorganic sludge. Cationic polyacrylamide is not easy to use when the base is strong, anionic polyacrylamide should not be used when the acid is strong. When the solid content of sludge is high, the amount of polyacrylamide is usually larger.
Polyacrylamide (PAM) is a linear polymer, chemical formula is (C3H5NO) N. It is a hard glassy solid at room temperature. The products are liquid glue, latex and white powder particles, translucent beads and flakes. Good thermal stability. Can be dissolved in water in any proportion, aqueous solution is uniform transparent liquid. After long-term storage, the solution viscosity will decrease due to slow degradation of polymer, especially when the storage conditions are poor.  Polyacrylamide, as lubricant, suspension agent, clay stabilizer, oil displacement agent, water loss reducer and thickener, has been widely used in drilling, acidification, fracturing, water plugging, cementing and secondary oil recovery, tertiary oil recovery. It is a very important oil field chemical.Learn more
Polyferric sulfate is a kind of inorganic polymer coagulant with superior performance. It is a light yellow amorphous powdery solid and easily soluble in water. 10% (mass) aqueous solution is red-brown transparent solution and hygroscopic. Polyferric sulfate is widely used in drinking water, industrial water, all kinds of industrial waste water, municipal sewage, sludge dewatering purification treatment.Learn more