WELLDONE CHEMICAL
How to select the appropriate PAM type for wastewater treatment plant (Part 2)
Source: | Author:Vicky | Published time: 2023-02-16 | 581 Views | Share:
Polyacrylamide PAM has good water retention and drought resistance to the soil. The test results show that the time to reach the wilting point of barley and lettuce increases with the increase of the concentration of polyacrylamide PAM, and even at a lower concentration, the time to reach the wilting point is 5 times longer than that of sandy soil without PAM.

The selection of polyacrylamide is mainly based on the different types of charges carried by the sewage water quality. According to the characteristics of the water quality, cationic polyacrylamide, anionic polyacrylamide, or amphoteric polyacrylamide are selected. The process is generally from the experiment Small test in the laboratory, large test at the manufacturer, final product selection, and specific analysis of specific issues.

Polyacrylamide PAM has good water retention and drought resistance to the soil. The test results show that the time to reach the wilting point of barley and lettuce increases with the increase of the concentration of polyacrylamide PAM, and even at a lower concentration, the time to reach the wilting point is 5 times longer than that of sandy soil without PAM. The use of polyacrylamide in soil improvement mainly has the following functions: to enhance the stability of the physical structure of the surface soil, to improve the water conductivity of the soil, and to improve the corrosion resistance of the surface soil.

Regardless of the water quality in any industry, the most important thing is to choose the right model. Sudden events happen from time to time. Once changes occur, we must deal with them calmly. Don’t just look at the problem itself, but find a solution. The polyacrylamide itself Selection is a highly experimental process.

 

    Anionic polyacrylamide can be used with different molecular weights according to different uses and user requirements for product performance.

  In industrial wastewater treatment, especially for suspended particles, coarse, high concentration, positively charged particles, neutral and alkaline wastewater such as steel factory wastewater, electroplating factory wastewater, metallurgical wastewater, coal washing wastewater, etc. Sewage treatment works well.

in drinking water treatment. The water of many waterworks comes from rivers with less mud and high mineral content, which is relatively turbid. Although it has been treated by sedimentation, it still does not meet the requirements. It is necessary to add flocculants to make the water clear. Many waterworks use inorganic flocculants , but the dosage is large, resulting in a bad effect of increasing the amount of sludge. Anionic polyacrylamide is used as the flocculant. The dosage is 1/50 of the inorganic flocculant, but the effect is several times to dozens of times that of the inorganic flocculant. , especially the polyacrylamide produced by our company, the residual monomer has reached food grade (less than 0.05%), close to the advanced level abroad, non-toxic, more suitable for drinking water treatment, for river water with serious organic pollution and anionic polyacrylamide Acrylamide works better together.

Polyacrylamide is used for the recovery of lost starch and distiller's grains in starch factories and alcohol factories. Now many starch factories discharge wastewater with high starch content, which affects the environment after discharge and wastes resources. PAM is added to precipitate starch, and the sediment is filtered by a filter press into cakes that can be used as feed. A large number of distiller's grains in alcohol factories are Using this process, an alcohol factory in Heilongjiang uses polyacrylamide as a flocculant to recycle distiller's grains and has achieved great economic benefits. Polyacrylamide is used as a water shutoff agent for oil field profile control and water shutoff, and an oil displacement agent for tertiary oil recovery. Polyacrylamide is used as a papermaking aid. PAM is widely used in papermaking. It can be used as a long-fiber papermaking dispersant, dry-wet strengthening agent, retention aid, filter aid, and flocculant for papermaking wastewater.