Polyacrylamide has four characteristics of flocculation, thickening, adhesion and resistance reduction. The difference of various characteristics determines the wide application of polyacrylamide. For example, because flocculation can be used as a water treatment agent, drag reduction can be used in the tertiary recovery of oil field drilling, as a thickener in industries requiring thickening such as glue and mortar, and adhesion can be used as a binder in soil conditioning and shale gas fracturing. The following star water purification details for you to answer the use and role of polyacrylamide.

1. Sewage treatment

 

According to the characteristics of polyacrylamide flocculation, adsorption bridge, surface adsorption and precipitation net capture, the suspended matter in sewage bridge flocculation to form large particles, to promote the impurities, colloid and water in sewage away. Application industry is very wide, including: iron and steel plant, coal washing plant, sand washing plant, concentrator, electroplating plant, paper mill, metallurgical plant, pharmaceutical factory, municipal plant, slaughterhouse, breeding plant and food processing plant production of a series of wastewater treatment.

 

2. Oil drilling

 

Polyacrylamide is the raw material of drilling fluid in oil field drilling process. Its main functions are to increase viscosity, fill, wall protection, filtration, lubricate the bit and make the cuttings more prone to slagging. In tertiary oil recovery, heat resistant salt resistant polyacrylamide and post-hydrolyzed anionic polyacrylamide are used to flood oil. Nonionic polyacrylamide adding crosslinking agent is often used to glue plugging.

 

3. The thickener

 

As a thickener, anionic and non-ionic polyacrylamides are mainly used, but are rarely used due to the rapid degradation of cations. As a thickening agent, the main thickening, water retention, not dispersed role. The main use of concrete mortar, used in the glue and coating industry, mainly to increase viscosity and lubricity.

 

4. The dispersant

 

As a dispersant, polyacrylamide is mainly used in papermaking and textile industry. Polyacrylamide as a dispersant, mainly used to make fiber and filler distribution more uniform, make the paper smooth, uniform, no holes. As sizing agent, the main function is to press sizing agent on the fabric to make the fabric smooth, thick and stiff.

 

5. Fracture drag reducer

 

Polyacrylamide as a drag reducer can be used in shale gas fracturing. Due to the limitation of use conditions, there are many use of instant polyacrylamide and polyacrylamide emulsion. It can reduce the turbulent flow of rough fluid inside the pipe and reduce the resistance of molecular movement.

 

6. Glue

 

Polyacrylamide as a binder in the spice industry is typical, ultra-high molecular weight polyacrylamide is often used for incense, because of its strong adhesion, can make the surface of the incense smooth, not rough, not cracking, not sticking mold. The finished product has good appearance, and the strength of fragrance is obviously enhanced.

 

Polyacrylamide is known as auxiliaries for its wide application. In addition to the above functions, can also be used as piling mud additives, papermaking resident filter aid, windbreak sand fixation soil moisture agent.