How to use polyacrylamide What is polyacrylamide used for?

Principles of use of polyacrylamide:

1. Granular polyacrylamide cannot be directly added to sewage. It must be dissolved in water before use, and its aqueous solution must be used to treat sewage.

2. The dissolved water should be clean (such as tap water), not sewage. Water at room temperature is sufficient, and generally does not need to be heated. Water temperature below 5 is very slow to dissolve.

The dissolution speed is accelerated when the water temperature increases, but more than 40 will accelerate the degradation of the polymer and affect the use effect. In general, tap water is suitable for the preparation of polymer solutions. Water with strong acid, alkali and high salt content is not suitable for preparation.

3. Polyacrylamide is strictly forbidden to come into contact with iron, and iron ions will degrade the molecular chain of polyacrylamide.

4. The selection of polymer solution concentration is recommended to add 1g-3g polymer powder to 1 liter of water.

How to use polyacrylamide 1The dissolution method dissolves the solid particles into an aqueous solution with a concentration of 1 -5 before use, so that it can quickly exert its effect. When dosing, the gradual home medicine should be adopted, slowly thrown into water, so that it can be evenly dispersed and dissolved in the water.

2.The addition of dissolved solution is usually about the addition of an aqueous solution, but in the case of high concentration and high viscosity of the suspension, it is recommended to further dilute the aqueous solution into an aqueous solution, which will be easy to mix and exert full effect. 3.

The molecular weight of cation is lower than that of anion, so the viscosity is weaker than that of anion, so the concentration standard of cation and non-ionic ratio is slightly higher than that of anion. (Depending on the situation, the concentration can also be adjusted appropriately according to the water concentration, with high turbidity and low concentration.) Low turbidity can be appropriately increased concentration).

The recommended concentration is 5--1%.Notes: 1

When preparing an aqueous solution of polyacrylamide, it should be carried out in enamel, galvanized, aluminum or plastic drums, and should not be prepared and stored in iron containers. 2.When dissolving, attention should be paid to adding the product evenly and slowly into the dissolver with stirring and heating measures, solidification should be avoided, the solution should be prepared at a suitable temperature, and mechanical shearing should be avoided for a long time.

It is recommended to stir the stirrer for 60-200 rpm, otherwise it will lead to polymer degradation and affect the use effect. 3.The aqueous solution of polyacrylamide should be prepared at the ready, and when the dissolved solution is placed for a long time, its performance will gradually decrease depending on the water quality.

4.After adding an aqueous solution of flocculant to the suspension, if it is stirred vigorously for a long time, the floc that has formed will be destroyed. Applications: Usage: Type of polymer.

Specification dosage and ratio concentration furnace smelting. Aluminum sulfate circulating water, in the production process, remove impurity anions 10 million thousandths of 5 thousandths per ton with 3 5 grams of brine to clarify and remove calcium and magnesium anions 800 12 million thousandths per ton with 1 2 grams of bentonite to produce increased bentonite viscosity anion 1500 18 million thousandths per ton with 2 3 grams of concrete superplasticizer anion 500 8 million with per ton Polyacrylamide application range: (PAM has strong applicability) 1. It is used as a retention aid and reinforcing agent in the papermaking process.

2. It is used as coagulant, flocculant and sludge dewatering agent in water treatment. 3. It is used as a dewatering agent and oil displacement agent in oil drilling. 4. PAM is also widely used in thickening, stabilizing colloids, drag reduction, bonding, film formation, biomedical materials, etc.

The effect of polyacrylamide produced by Huixiang water purification materials in Gongyi City on sewage.

1. For sludge dewatering, the corresponding model of this product can be selected according to the nature of the sludge, which can effectively dehydrate the sludge before the sludge enters the filter press, when dewatering, the floc is large, the filter cloth is not sticky, and the filter is not dispersed when pressing, the mud cake is thicker, the dewatering efficiency is high, and the moisture content of the mud cake is less than 80%.

2. For the treatment of domestic sewage and organic wastewater, this product is positive in the matching or alkaline medium, so that the sewage with negative charge of suspended particles in the sewage is flocculated and precipitated, and the clarification is very effective.

3. Papermaking reinforcing agents and other additives. Improve the retention rate of fillers and pigments, and the strength of paper.

4. It is used as an auxiliary agent for oilfield economics, such as clay anti-swelling agent and thickener for oilfield acidification.

5. It is used as a textile sizing agent, with stable slurry performance, less slurry, low fabric breakage rate, and smooth cloth surface.

Pro, polyacrylamide has a large number of amide groups on the main chain, high chemical activity, can be modified to prepare many polyacrylamide derivatives, products have been widely used in papermaking, mineral processing, oil production, metallurgy, building materials, sewage treatment and other industries. Polyacrylamide, as a lubricant, suspension agent, clay stabilizer, oil displacement agent, water loss reduction agent and thickener, has been widely used in drilling, acidizing, fracturing, water plugging, cementing, secondary oil recovery and tertiary oil recovery, and is an extremely important oilfield chemical. Basic information: Chinese name: polyacrylamide, odorless, alias: flocculant No. 3.

As an industrial auxiliary, the functions and uses of polyacryloyl aspiride are roughly as follows: water treatment coagulant, sludge dewatering dampering agent, agricultural soil loosening agent and moisturizing agent, adhesive

1. Water treatment coagulant. Anionic or cationic polyacrylamide is usually used as a coagulant for water purification, which can accelerate flocculation and rapid precipitation, and achieve the effect of sewage purification and impurity removal.

2. Sludge dehydrator. Cationic polyacrylamide can be used as a sludge dewatering agent, the main role is to remove the water in the sludge, reduce the water content of the sludge, and then treat the dried sludge through sludge pressing equipment such as plate and frame filter presses and centrifugal filter presses.

3. Agricultural soil loosening agents and moisturizers. Irrigation prevents soil compaction, improves soil, and prevents soil erosion.

4. Adhesive. Because the solution of polyacrylamide has a certain viscosity, it can be used as a binder in some industries.

Physicochemical properties

Polyacrylamide is a water-soluble linear polymer formed by the polymerization of acrylamide (AM) monomer by free radicals, which has good flocculation and can reduce the frictional resistance between liquids, and can be divided into four types: non-ionic, anionic, cationic and amphoteric according to ionic characteristics.

It can be dissolved in water in any proportion, and the aqueous solution is a uniform and transparent liquid. The size of the molecular weight has little effect on the solubility, but when the solution concentration is higher than 10%, the high molecular weight polymer can show a gel-like structure due to the bonding of intermolecular hydrogen atoms. The high molecular weight solution is a pseudoplastic fluid.

The above content reference: Encyclopedia-polyacrylamide.