Cationic polyacrylamide (CPAM) is a kind of linear organic macromolecular polymer, because it has a variety of active groups, it can bond with many substances and form hydrogen bonds.Mainly flocculation negatively charged colloid, except the turbidity, decoloring, adsorption, adhesion, and other functions, suitable for dyeing, papermaking, food, building, metallurgy, mineral processing, coal, oil field, aquatic products processing and fermentation industries such as waste water treatment of organic colloid content is higher, especially suitable for urban sewage, urban sewage sludge, sludge and other industrial sludge dewatering treatment.
The characteristics of cationic polyacrylamide.
1. The water-solubility of cationic polyacrylamide is very good,it can be completely dissolved even in cold water.
2. Low dosage and a small amount of cationic polyacrylamide products can have obvious flocculation effect.Generally, only 0.01--10ppm (0.01--10g/m3) can be added to play a full role.
3. Using cationic polyacrylamide and inorganic flocculant together can work better.
The application field of cationic polyacrylamide.
1, as a flocculant, cationic polyacrylamide is mainly used in industrial solid-liquid separation process, including settlement, clarification, concentration and sludge dewatering technology, the application of cationic polyacrylamide: urban sewage treatment, paper industry, food processing, petrochemical industry, metallurgical industry, processing industry, dyeing industry and sugar industry and all kinds of industrial wastewater treatment.
Cationic polyacrylamide is used in urban sewage and meat, poultry, food processing wastewater treatment process of sludge precipitation and sludge dewatering by its organic colloid electrical group of sludge negative charge neutralization and excellent polymer bridging coagulation function, prompting colloid particles gathered into large pieces of floc, separated from the slurry, the effect is obvious, dosing quantity is little.
2. Cationic polyacrylamide can be used as paper dry strength agent, retention agent and filter in papermaking industry, which can greatly improve the paper quality, save cost and improve the production capacity of the paper mill.
Can be directly with inorganic salt ions, fiber, and other organic polymer electrostatic bridge so as to enhance the physical strength of paper, and reduce the loss of fiber or filler to accelerate the filtering, enhancement and retention, leaching effect, can also be used for water treatment, at the same time, can a cationic polyacrylamide in the deinking process obvious flocculation effect.
3, cationic polyacrylamide in fiber slurry (asbestos and cement products) can make the shaping of asbestos and cement products and improved drainage, increase the intensity of the slab material asbestos, in insulation board, can improve the ability of the combination of the additive and fiber.
4. Cationic polyacrylamide can be used as the clarifier for mine wastewater and coal washing wastewater in the mining and coal preparation industry.
5. Cationic polyacrylamide can be used in dyeing wastewater, leather waste water and oily wastewater treatment, so as to remove the turbid and discoloration to meet the emission standard.
6. Cationic polyacrylamide in phosphate purification is helpful for the separation of gypsum in wet phosphoric acid process.
7. Cationic polyacrylamide is used for water treatment plant of river source.