Home > News > Content
Nonionic Polyacrylamide Application Areas
Oct 20, 2017

Nonionic polyacrylamide is a water-soluble polymer or polyelectrolyte. Because of its molecular chain contains a certain number of polar groups, it can be adsorbed by the water suspended solid particles, so that the particles between the bridge or through the charge and the particles condensed to form a large floc. Therefore, it can accelerate the sedimentation 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. Mainly used for a variety of industrial wastewater flocculation settlement, sediment clarification. Such as paper and pulp wastewater wastewater treatment, mineral processing and metal smelting process of wastewater treatment, steel and stone processing plant wastewater treatment.

Reaction principle

The pendant groups on the molecular chains of the nonionic polyacrylamide are active amide groups, which can undergo a variety of chemical reactions to obtain a variety of derivatives, but the reaction is often not carried out due to the proximity of the gene effect.

Because nonionic polyacrylamide (NPAM) is a macromolecule polymer or polyelectrolyte, its molecular chain contains a certain amount of polar gene to adsorb solid particles suspended in water, so that the intergranular bridge forms a large floc. It accelerates the sedimentation of the particles in the suspension, which is very noticeable to speed up the clarification of the solution and promote the filtration and other effects.

Application areas

1, as a flocculant, mainly used in industrial solid-liquid separation process, including sedimentation, clarification, enrichment and sludge dewatering and other processes, the application of the main industries are: urban sewage treatment, paper industry, food processing industry, petrochemical industry, Metallurgical industry, mineral processing industry, dyeing industry and sugar industry and a variety of industrial wastewater treatment. Used in the municipal sewage and meat, poultry, food processing wastewater treatment process of sludge sedimentation and sludge dewatering, through its contained in the positive charge of the negative charge in the sludge organic colloid neutralization and High polymer excellent bridging function, to promote colloidal particles gathered into large pieces of floc, separated from its suspension. The effect is obvious, less dosage.

2, in the paper industry can be used as paper dry strength agent, retention aid, filter aid, can greatly improve the quality of paper, cost savings, improve the production capacity of paper mills. Can be directly with the inorganic salt ions, fibers and other organic polymer electrostatic bridge to enhance the physical strength of the paper to reduce the loss of fiber or filler, to speed up the filter, from the enhanced, retention, help filter, can also be used for White water treatment, at the same time, in the deinking process can play a significant flocculation effect.

3, fiber slurry (asbestos - cement products) can make the molding of asbestos - cement products to improve the drainage, asbestos blanks to improve the strength; in the insulation plate, can improve the ability of additives and fiber binding.

4, in the mining, coal preparation industry can be used for mine wastewater, coal washing wastewater clarifier.

5, can be used for dyeing wastewater, leather waste water, oily wastewater treatment, so that in addition to turbidity, decolorization, in order to achieve emission standards.

6, in the phosphoric acid purification, contribute to the wet process phosphorite gypsum separation.

7, for the river water source of the water plant flocculant water treatment.