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Anionic Polyacrylamide Applicable Scope
Aug 24, 2017

Anionic polyacrylamide (APAM) is a water-soluble polymer. It is mainly used for flocculation and sedimentation of various industrial wastes, such as iron and steel plant wastewater, electroplating wastewater, metallurgical wastewater, coal washing wastewater and so on. Mud dehydration and so on. Can also be used for clarification and purification of drinking water. Because of its molecular chain contains a certain number of polar groups, it can be suspended by the adsorption of solid particles in the water, so that the particles between the bridge or through the charge and particles to form a large flocculation, it can accelerate the particles in the suspension Of the settlement, there is a very clear way to speed up the clarification of the solution to promote filtration and other effects.

Application areas

1. Coal preparation plant selection of polyacrylamide for coal slurry precipitation concentrated tailings filter, please use anionic polyacrylamide, non-ionic polyacrylamide, low cationic polyacrylamide.

2. Paint industry, please use anionic polyacrylamide, non-ionic polyacrylamide. Paint wastewater treatment, the traditional method is directly on the mixed wastewater for coagulation treatment, the treatment effect is not ideal, water quality is unstable, more difficult to meet the emission standards.

3. Dairy industry waste biological treatment, sludge treatment, please select cationic polyacrylamide.

4. Electroplating wastewater containing cyanide oxide treatment Anionic polyacrylamide, nonionic polyacrylamide, low cationic polyacrylamide.

5. Copper mining tailings wastewater treatment using anionic polyacrylamide, low cationic polyacrylamide, nonionic polyacrylamide.

Coal washing wastewater treatment program:

Coal preparation plant on the treatment of slime water under the general use of "cyclone - thickener - filter press (slime sedimentation tank)" treatment process. Under normal circumstances are purchasing machine polymer flocculant (polyacrylamide). Polymer flocculant and slime particles or slime colloidal contact with the role of the surface of the mud and reduce the surface energy, so that the coagulation of coal slime particles precipitation. Polyacrylamide molecular weight is generally between millions, different sizes of coal water to use different molecular weight flocculant. Polyacrylamide can be divided into anionic polyacrylamide, cationic polyacrylamide and nonionic polyacrylamide three types. When using polyacrylamide for water treatment, it is necessary to ensure that the type is consistent with the pH value of the slime water. The anionic polyacrylamide is suitable for the alkaline coal slurry, the cationic polyacrylamide is suitable for the acidic coal water, the anionic And cationic polyacrylamide mixed use, slime water flocculation precipitation better.

Principle of action

1) Flocculation principle: PAM for flocculation, and floc type of surface properties, especially the potential, viscosity, turbidity and the PH value of the suspension, the particle surface of the dynamic potential is the reason for the addition of particles to join The surface charge of the opposite PAM, can reduce the potential and cohesion.

2) adsorption bridge: PAM molecular chain fixed to the surface of different particles, the particles formed between the polymer bridge, the particles formed aggregates and settlement.

3) Surface adsorption: PAM molecules on the polar groups of particles of various adsorption.

4) Enhance the role: PAM molecular chain and dispersed phase through a variety of mechanical, physical, chemical and other effects, the dispersed phase implicated together to form a network.

Applicable scope

1. Used in textile, printing and dyeing industry. Polyacrylamide as a sizing agent for finishing the fabric, finishing agent, and can produce supple, wrinkle-free, anti-fungal protective layer. The use of its strong moisture absorption characteristics, can reduce the spinning yarn when the break rate. Polyacrylamide as a post-treatment agent to prevent the fabric of static and flame retardant. Used as a dye auxiliaries, polyacrylamide can make the product fastness, high brightness, but also as a bleach non-silicon polymer stabilizer.

2, mainly used as flocculant: for suspended particles, coarse, high concentration, the particles with positive charge, water PH value of neutral or alkaline sewage, because the anionic polyacrylamide molecular chain contains a certain amount of polar base energy Adsorption of suspended solids in the water, so that the bridge between the particles to form a large floc. So it accelerates the deposition of particles in the suspension, there is a very clear way to speed up the clarification of the solution to promote filtration and other effects. The product is widely used in chemical industry wastewater, waste treatment, municipal sewage treatment. Water industry, high-turbidity water purification, Shen Qing, coal washing, mineral processing, metallurgy, iron and steel industry, zinc, aluminum processing industry, electronics industry and other water treatment.

3, for the oil industry, oil production, drilling mud, waste mud treatment, to prevent water channeling, reduce friction, improve oil recovery, tertiary oil production is widely used.

4, for the paper industry, one is to improve the filler, paint and other retention rate. (Including dry strength and wet strength), in addition, the use of PAM can also improve the paper tear resistance and porosity, to improve the visual and printing performance, but also to use In food and tea wrapping paper.

5, other industries, the food industry, for sugar cane sugar, beet sugar production in sugar juice clarification and syrup phosphorus floatation extraction. Enzyme fermentation broth to clarify the industry, but also for the recovery of feed protein, stable quality, good performance, the recovery of protein powder on the survival rate of chickens increased and weight gain, egg no adverse effects, synthetic resin coating, Water, building materials industry, improve the quality of cement, construction industry adhesives, filling repair and water shutoff, soil improvement, electroplating industry, printing and dyeing industry.