What is a nonionic flocculant?
Nonionic flocculant, NPAM for short, is the linear polymer, the molecular weight is between 500-1200 million, the appearance of solid product is a white powder, its liquid state is colorless viscous colloidal, soluble in water, hardly soluble in organic solvents.
It should be dissolved at normal temperature, it easily decomposes if the temperature is above 150 ℃. Belonge to Non-dangerous, non-toxic, non-corrosive. Solid-state PAM is hygroscopic, flocculation, adhesion, resistance reduction, thickening, and good stability.
Due to the nonionic flocculant being without ionic functional groups, the PH value and salt have little influence on the flocculation performance, under acidic conditions, the flocculation effect is better than anionic flocculant, the floc strength is stronger than anionic flocculant.
Applications
- Mainly used for the solid-liquid separation process, including sedimentation, clarification, thickening, concentration, and sludge dewatering. application lines: municipal sewage, papermaking industry, food processing industry, petrochemical industry, metallurgical industry, mineral processing industry, dyeing wastewater treatment and sugar industry, and various industrial wastewater treatment. If the Sewage shows acid, we often use nonionic polyacrylamide with poly aluminum chloride and other inorganic flocculants, with fast settlement speed and good treatment effect.
- In the paper industry can be used for paper dry strength agent, retention agent, filter aid.
- Used in the fiber slurry (asbestos cement products) and insulating board.
- Used for clarifying agent for mine wastewater and coal washing wastewater in mining and coal industry. In the Centrifugal separation of tailings washing, the sedimentation and filtration process of coal slime, nonionic polyacrylamide can increase coal recovery rate and filtration velocity. In the metal smelting process, it can improve the separation efficiency by adding non-ionic polyacrylamide NPAM in the Leachateand residue after flotation and smelting.
- For the treatment of dyeing wastewater, leather wastewater, oily wastewater.
- Phosphoric acid purification can help to separate gypsum in the wet phosphoric acid process.
- For the water treatment flocculant of tap water factory
- The textile industry additives For textile sizing can improve the slurry adhesion effect, penetration effect, and desizing performance if adding some chemical pulp mixed by nonionic polyacrylamide and another agent, improving antistatic performance, reducing mortar fleck, reducing sizing rate.
- Chemical grouting agent In the construction industry, especially in the construction process of high strength building for the dam, foundation, tunnel lamp, we often use nonionic polyacrylamide (95%) with methylene bisacrylamide solution (5%) as a chemical grouting agent, it can play the role of strengthening coagulation effect.
- Soil water-keeping agent Non-ionic polyacrylamide can play a water-keeping agent in soil water sand, green hill, the sand solidification dust, and other fields
- Oil plugging agent The nonion polyacrylamide can be used as an oil plugging agent mixed with lignocellulose by adding some other chemical additives.
