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Polyacrylamide pam emulsion cationic nonionic sand washing coal washing water purification f

Polyacrylamide (cpolyacrylamids), referred to as PAM, is a linear polymer and one of the most widely used varieties of water-soluble homomolecular compounds. Polyacrylamide and its derivatives can be used as effective flocculants. Thickeners, paper additives, and liquid drag reducers are widely used in water treatment, papermaking, petroleum, coal, mining and metallurgy, geology, textiles, construction and other industrial sectors.

This product is an organic polymer flocculant, and its models are divided into anionic, cationic and nonionic. It has strong bridging and adsorption properties in water, which can quickly change small flocs into coarse flocs, reduce the water content of flocs, and accelerate the settlement of flocs; it has strong adaptability to the pH value, turbidity and temperature of raw water ; At the same time, it has excellent decolorization and heavy metal removal effects.PAM is used for sewage treatment. It has high removal efficiency of organic matter in water,
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Detail

Description

Product performance

Polyacrylamide (cpolyacrylamids), referred to as PAM, is a linear polymer and one of the most widely used varieties of water-soluble homomolecular compounds. Polyacrylamide and its derivatives can be used as effective flocculants. Thickeners, paper additives, and liquid drag reducers are widely used in water treatment, papermaking, petroleum, coal, mining and metallurgy, geology, textiles, construction and other industrial sectors.

This product is an organic polymer flocculant, and its models are divided into anionic, cationic and nonionic. It has strong bridging and adsorption properties in water, which can quickly change small flocs into coarse flocs, reduce the water content of flocs, and accelerate the settlement of flocs; it has strong adaptability to the pH value, turbidity and temperature of raw water ; At the same time, it has excellent decolorization and heavy metal removal effects.

PAM is used for sewage treatment. It has high removal efficiency of organic matter in water, less dosage, fast settling speed and low cost of water production. It is a product that cannot be replaced by other flocculants.


Use characteristics

1) Flocculation: PAM can neutralize suspended matter through electricity, bridge adsorption, and act as a flocculant.

2) Adhesiveness: It can play an adhesive role through mechanical, physical and chemical effects.

3) Resistance reduction: PAM can effectively reduce fluid frictional resistance, adding a small amount of PAM to water can reduce resistance by 50-80%.

Brief introduction to the working principle of PAM:

1) Principle of flocculation: When PAM is used for flocculation, it is related to the surface properties of the flocs, especially the kinetic potential, viscosity,

turbidity and pH value of the suspension. The dynamic potential of the particle surface is the reason for particle inhibition.

The PAM with the opposite surface charge can quickly reduce the zeta potential and aggregate.

2) Adsorption bridging: PAM molecular chains are fixed on the surfaces of different particles, and polymer bridges are formed between the particles,

so that the particles form aggregates and settle.

3) Surface adsorption: various adsorptions of polar group particles on PAM molecules.

4) Reinforcing effect: PAM molecular chains and dispersed phase implicate the dispersed phase together through various mechanical, physical,

chemical and other actions to form a network, thereby playing an increasing role.

Synthesis and process of PAM

PAM: Polyacrylamide is produced by the direct reaction of acrylonitrile and water under the action of a skeleton copper catalyst,

and then the finished product is obtained through ion exchange polymerization, drying, grinding and other processes. The process introduction is as follows:

    1. Catalytic hydration CH2=CHCN+H2O skeleton copper catalyst CH2=CHCONH2

                                                                Humidity

    2. Polymerization nCH2=CHCONH2 initiator (CH2CHCONH2)


1) Flocculation: PAM can neutralize suspended matter through electricity, bridge adsorption, and act as a flocculant.

2) Adhesiveness: It can play an adhesive role through mechanical, physical and chemical effects.

3) Resistance reduction: PAM can effectively reduce fluid frictional resistance, adding a small amount of PAM to water can reduce resistance by 50-80%.

Brief introduction to the working principle of PAM:

1) Principle of flocculation: When PAM is used for flocculation, it is related to the surface properties of the flocs, especially the kinetic potential, viscosity, turbidity and pH value of the suspension. The dynamic potential of the particle surface is the reason for particle inhibition. The PAM with the opposite surface charge can quickly reduce the zeta potential and aggregate.

2) Adsorption bridging: PAM molecular chains are fixed on the surfaces of different particles, and polymer bridges are formed between the particles,

so that the particles form aggregates and settle.

3) Surface adsorption: various adsorptions of polar group particles on PAM molecules.

4) Reinforcing effect: PAM molecular chains and dispersed phase implicate the dispersed phase together through various mechanical, physical, chemical and other actions to form a network, thereby playing an increasing role.

Synthesis and process of PAM

PAM: Polyacrylamide is produced by the direct reaction of acrylonitrile and water under the action of a skeleton copper catalyst, and then the finished product is obtained through ion exchange polymerization, drying, grinding and other processes. The process introduction is as follows:

    1. Catalytic hydration CH2=CHCN+H2O skeleton copper catalyst CH2=CHCONH2

                                                               Humidity

    2. Polymerization nCH2=CHCONH2 initiator (CH2CHCONH2)

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Figure: Schematic diagram of PAM process flow


Comparison of use effect

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How to use

The dissolution method of powdered polyacrylamide is very different from that of inorganic small molecule iron salts and aluminum salts. Generally speaking, the following principles should be followed:

1) The powdered polyacrylamide flocculant cannot be directly added to the sewage, it must be dissolved in water before use, and then its aqueous solution is added to the sewage according to a certain dosage to treat the sewage.

2) The water used to dissolve the powdery polymer should be clean water (such as tap water), not sewage, just normal temperature water, usually without heating. If the water temperature is too high, the polymer will be thermally degraded, which will affect the use effect. Generally, the pH value of tap water meets the requirements for preparing polymer solutions. Strongly acidic or alkaline water is not suitable for preparing aqueous solutions of polymers.

3) The concentration of the polymer is recommended to be 1‰~3‰, that is, add 1~3g of polymer powder to one liter of water.

The following factors should be considered in the choice of concentration: If the container for preparing the polymer solution is small and the daily dosage of medicine is large, it is recommended to prepare a slightly higher concentration: such as 3‰. When the molecular weight of the polymer to be prepared is very high, it is recommended to prepare a slightly thinner concentration: such as 1‰. After the polymer is added to the sewage, if the dispersion state is not very good due to equipment reasons, it is recommended to prepare a slightly thinner concentration. In short, if the polymer concentration is too high, the load on the agitator motor will be too large, and the dispersion of the polymer solution into the sewage will not be good, which will affect the use effect. A thinner mixture will help improve the use effect.

4) Do not transfer the prepared solution through a centrifugal pump to avoid shear degradation of the polymer caused by high-speed rotating blades. The specific method of preparation is as follows:

★Add a certain amount of water into the container (such as a laboratory beaker or a factory preparation tank), calculate and weigh the required amount of polymer according to the amount of water.

★Turn on the agitator and stir the clear water into a vortex. The linear speed at the end of the agitator blade should not exceed 8 m/s to avoid degradation of the polymer.

★At the same time, the stirring speed should not be too slow, so as to prevent the polymer particles from sinking and agglomerating in water.

★Slowly sprinkle the polymer into the vortex of water, taking care to prevent the polymer particles from sticking to each other and agglomerating after entering the water. Then stir for a period of time to fully dissolve the polymer particles, and finally become a uniform, transparent and viscous solution.

The length of stirring time can be determined as follows:

★When the water temperature is high in summer, the anionic and cationic polymers need to be stirred for about 1 hour, and the non-ionic polymers need to be stirred for about 2 hours.

★When the water temperature is low in winter, the anionic and cationic polymers need to be stirred for about 1.5 hours, and the non-ionic polymers need to be stirred for about 3 hours.

Uneven or insufficient dissolution will affect the use effect.

Iron ions are catalysts that cause the chemical degradation of polyacrylamide. Therefore, when preparing, transferring, and storing polyacrylamide solutions, avoid contacting the solution with iron ions. Equipment for preparing polymer solutions is preferably constructed of materials such as stainless steel, fiberglass, or plastic-lined carbon steel.


Technical indicators

Project

Indicator

Appearance

white particles

Solid content

≥90%

Ionicity

10-70

Water insoluble matter

≤0.3%

Dissolving time

≤60分钟


Note: This technical index is a conventional physical and chemical index, not as the final supply acceptance standard.


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Packaging and storage

Plastic woven bag packaging: 25kg/bag, stored in a cool and dry place. Storage period: one year


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Why choose us

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FAQ

Q1: Are you a factory or a trading company?

A1: We are a professional new material foreign trade company with our own production and processing factory

Q2: Do you accept sample orders?

A2: Yes, we can make your customized samples before bulk order.

Q3: When can I get the goods after payment?

A3: Usually the production time is about 10-20 working days, depending on your project.

Q4: Which antiscalant should I choose?

A4: It depends on your intended use or purpose, you can contact us and inform the details in order to provide you with the best antiscalant.

Q5: Can I get your products with our logo and design?

A5: Yes, we support OEM or ODM service.

Q6: Can I get a cheaper price?

A6: Yes, please contact us to get the best price.

Q7: Can I visit your factory?

A7: Of course, you are welcome to come to our factory at any time. Our professional engineers and technicians are always at your service.

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