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The important role of polyacrylamide

  • Author:Carria Wang
  • Source:Original
  • Release on:2022-01-20

Polyacrylamide is used as a retention aid and hardener in the papermaking process. Type: suitable for domestic water and more standardized sewage treatment. A detailed introduction to the application of PAN collocation, first to analyze the connection between them, and then introduce you to the mixing process, common problems and related knowledge.

Polyacrylamide zwitterion PAM is suitable for treating wastewater with uncertain properties of suspended solids and pH value. If a desilting tank or sewage is used, as long as the temperature is not lower than ice, PAM will use low temperature in winter without any harm. Due to the decrease of water temperature and the increase of water viscosity, ionic PAM is slightly slower than the inclined plate sedimentation tank of non-positive ionic PAM.

PAM has no toxic and side effects, but there is still n-butyric acid remaining in the process of confluence, so pay attention when using it! In the liquid phase adsorption, the water treatment agent particle pam is often used, and the air is generally adsorbed in layers. The adsorption layer can be divided into three categories according to its adsorption layer: fixed layer, moving layer and flowing layer.

Due to the permeability caused by the difference between the concentration values ​​of internal positive ions, functional groups and related chemical components in the solution, as well as the fusion force between the polymer material electrolyte solution and water, a large amount of water can be absorbed until the concentration difference disappears. And the control of the humectant to achieve a relatively satisfactory water absorption is the elasticity of the vulcanized rubber. The higher the degree of chemical crosslinking of the molecular formula, the stronger the elasticity of the vulcanized rubber. The balance between the elasticity and water absorption of the vulcanized rubber lies in its apparent water absorption.

PAM can solve the production wastewater in all industries: such as printing and dyeing wastewater, leather products wastewater, fluorine-containing wastewater, heavy metal wastewater, oil-containing wastewater, papermaking wastewater, coal preparation wastewater, mining wastewater, brewing wastewater, metallurgical industry wastewater, meat food wastewater , wastewater treatment, glue treatment in paper industry, special sugar solution, forging molding, anti-wrinkle fabric, metal catalyst, special medicine, concrete quick-setting, cosmetic and other industrial fields.

PAM has a certain salt resistance, which other tackifiers cannot achieve. Under all normal conditions, after adding polyacrylamide tackifier, it will gradually dissolve after five minutes, and it will dissolve within half an hour, and it is not easy to produce lumps in water, and it will slow down after about five minutes in water. It dissolves slowly, and it is not easy to produce agglomeration, and it is not easy to produce agglomeration in water.

The cationic degree of cationic polyacrylamide is about 3%. Because of its various active and lovely functional groups, it can be adsorbed in large quantities to form covalent bonds. The invention is mainly used for the colloidal solution of the inclined plate sedimentation tank, and has the functions of removing turbidity, decolorization, adsorption, adhesion and the like. It is mainly used for the treatment of high-concentration wastewater in organic chemical colloid solution, and can be used for municipal sewage, urban sludge, sludge treatment in paper industry and dewatering treatment of industrial sludge.

So, does the temperature have any effect on the solubility of PAM? When the temperature does not drop to 0 °C, the dynamic viscosity of water will weaken the Brown movement of particles in the water, as well as the fitness movement of suspended particles and the chance of collision. Therefore, a slightly lower temperature will increase the difficulty coefficient of sewage treatment. Only when the low temperature of sewage is fully mastered, it will be very easy after thawing. You can choose a coagulant according to the characteristics of the water, invest in lower sewage to remove the particles of the colloidal solution, and then choose a flocculant of specifications to make it achieve good practical results.

Shandong Welldone, as one of the top ten manufacturers of polyacrylamide in China, can provide customers with the required anionic, cationic and non-ionic polyacrylamide. If you are interested in a certain product, don’t be hesitate to contact us.