Cationic polyacrylamide or positively charged polyelectrolyte is one of the main coagulant materials that is widely used in the water and wastewater treatment industry. Using cationic polyacrylamide means absorbing suspended particles in water and industrial effluents with a negative charge and neutralizing the environment and coagulation of these materials. Mehr Azar Group is one of the largest suppliers of Omid cationic polyacrylic, which offers these polymer materials with the highest quality from the best brands in the world. In the following, we will introduce the cationic polyelectrolyte and discuss its advantages and production method as well as its disadvantages for the health of the body .
What is cationic polyacrylamide?
Polyacrylamide or PAM (polyacrylamide) is one of the coagulant materials that is in the form of a long chain and has acrylamide or NH2 with the chemical formula CH2CHCONH2 . These polymer compounds have a high molecular weight and are used in water, liquid and powder form in various industries. The most important feature of cationic polyacrylamide is the benefit of positive charge and high power in absorbing negatively charged particles. Negatively charged particles suspended in wastewater, such as sand particles, are absorbed by these polymers and after losing their negative charge, they stick together in the form of clots and finally settle at the bottom of the treatment ponds. As is clear from the name of this polymer, an important part of it is acrylamide or NH2 , which is highly reactive and active .
After entering the cationic polyacrylamide into the sewage treatment tank and pools, NH2 or its active acrylamides absorb negatively charged particles and are placed on the surface of these particles. With the loss of water at this stage, a clot is produced with a small volume and its volume will gradually increase. Eventually, large layers of sludge and coagulated material on the surface will be transported to the bottom of the pool or treatment plant and settle. In fact, by using cationic acrylic polyamide, it is possible to increase the speed of flocculation, coagulation and settling of particles of charged suspended substances in water and wastewater .
Read more: Sludge dewatering and thickening
Production of cationic polyacrylamide
The production of cationic polyacrylamide is done in the form of powder and liquid, and according to its application, different types of this polymer composition can be chosen. After the production of polyacrylamide, the ionic characteristics of these compounds are manipulated to create a positive charge in it and to obtain a cationic polyelectrolyte. It should be noted that currently the production of cationic, anionic and neutral polyacrylamide is not carried out in our country and various companies such as Mehr Azar are suppliers and importers of these products .
cationic polyacrylamide users
Due to the very high reactivity of active acrylamide in these compounds, these materials can be used as a coagulant and a suitable option for dyeing in industrial environments. Among the most common uses of cationic polyacrylamide, the following options can be mentioned :
Application of cationic polyelectrolyte in wastewater and water treatment
The presence of colloidal particles such as fat and oil and other suspended substances with low molecular weight is one of the biggest challenges in water and wastewater treatment. Various methods have been introduced to remove these substances, among which the use of coagulants and flocculants can be mentioned. Sand particles with a negative charge and organic materials with a positive charge easily react with polyacrylamide and cause their coagulation. In addition to removing pollutants in water and wastewater with this method, the use of polyacrylamide is also effective in improving water color and clarifying it .
Application of cationic polyelectrolyte in paper industry
The use of cationic polyelectrolyte is very common in the paper production industry and it is effective in improving the humidity of the paper color machine, machine drainage and increasing the wet strength of all types of paper .
Other uses of polyacrylamide with a positive charge can be used in the oil production industry, solid separation from liquid in food and pharmaceutical factories, industrial wastewater treatment, drinking water clarification, and color removal in the petrochemical industry and coagulation of solids. He mentioned in the industry of sugar and sugar production, improvement of agricultural soil, production of pesticides and production of mineral stones .
Advantages of using cationic polyacrylamide
The very wide application of cationic polyelectrolyte in various industries shows the many advantages and positive points of these materials. Some of the advantages of using cationic polyacrylamide are :
- Very high reactivity of active polyamides with colloidal particles and the need for less coagulants than other similar samples
- High power in removing microorganisms, colloidal and suspended particles in water and industrial wastewater
- High efficiency in sludge production and high flocculation power
- Improving the settling time of suspended substances on the bottom of the pool and treatment plants
Read more: bio filter
Is cationic polyacrylamide harmful to health?
Considering questions and uncertainties such as whether cationic polyacrylamide is harmful to health or not, it is necessary to investigate this issue. It should be noted that polyacrylamides normally do not cause any harm to the health of the body and their use in various industries is completely permitted and without risk. Of course, it is necessary to pay attention to the use of these materials for water and sewage treatment or other industries, that their direct contact with the body and eyes should be avoided .
Supply of polyacrylamide
Considering that it is not possible to produce polyacrylamide inside Iran, therefore these materials are all imported and belong to different brands. Mehr Azar Group is one of the largest suppliers of cationic polyacrylamide, which offers the highest quality materials at reasonable prices. To communicate with this collection, you can use the communication methods mentioned at the bottom of the page .