Liaoning Bishui Weilan Technology Co., Ltd. is a specialized water treatment company integrating: water treatment methods, mobile sludge dewatering and packaging one-stop services, dewatering equipment leasing, production, compounding, processing, and sales of water treatment chemicals, water sample analysis and testing, paid on-site debugging, technology transfer, and other businesses.
Main production and sales: polyaluminum chloride (iron), composite double acid aluminum iron (specialized for plate and frame dewatering), polyferric chloride, composite carbon source, polyacrylamide, plate and frame filter press hydrophobic filtration aid, activated carbon, retention and filtration aids, defoamer, decolorizing agent, bactericide, deodorant, corrosion and scale inhibitor, algicide, cleaning pre-film agent, calcium oxide, calcium hydroxide, resin, heavy metal capture agent, and other products required for water treatment.
The company's products and technologies are widely used in: water plants, sewage plants, sludge disposal centers, petroleum, petrochemicals, drilling, papermaking, mineral processing and coal washing, leather, coal chemical industry, steel, printing and dyeing, food and beverages, pharmaceuticals and pigment intermediates, chemical plants, and other industries. 

Product Introduction

Polyacrylamide is a water-soluble polymer that is insoluble in most organic solvents and has good flocculation properties. It can reduce the frictional resistance between liquids. Based on ionic characteristics, it can be divided into four types: non-ionic, anionic, cationic, and amphoteric.

Product Features

The flocculation effect of polyacrylamide flocculant in wastewater treatment is due to its two characteristics: a long-chain (linear) molecular structure and the presence of a large number of active groups in the polyacrylamide molecule. Polyacrylamide is a straight-chain polymer, with each molecule composed of over 100,000 monomers, making the molecular chain quite long. If fully extended, its length would be tens of thousands of times longer than that of ordinary molecules(such as sucrose) or ions (such as Ca2?). Due to its long and thin molecular chain, it bends or coils into irregular curved shapes. This long molecular chain extends many chemically active groups outward: amide groups (-CONH?) and carboxyl groups (-COO?). The amide group is a non-ionic group but is also adept at forming secondary valence bonds, adsorbing and connecting with active groups of other substances. Due to the long and thin molecular chain and numerous chemical active groups, polyacrylamide can form many connections with precipitated particles, resulting in larger flocs. The structure of these flocs is like cotton wool—loose, amorphous, interconnected but not very stable, with many internal spaces and fine networks that encapsulate a large amount of liquid. Thus, the density of the flocs is quite close to that of the liquid itself.

Product Applications

Polyacrylamide flocculant is widely used in thickening, stabilizing colloids, drag reduction, adhesion, film formation, biomedical materials, and other areas. In water treatment, it serves as a coagulant aid, flocculant, and sludge dewatering agent. In petroleum drilling and production, it is used as a water-reducing agent and oil displacement agent. In the papermaking process, it functions as a retention aid and strengthening agent.

Usage Instructions

When dissolving, the product should be evenly and slowly added to a dissolving vessel with stirring to avoid clumping. The solution should be prepared at a suitable temperature, and prolonged excessive mechanical shear should be avoided. It is recommended to use a stirrer at 60–200 rpm, as higher speeds may cause polymer degradation and affect performance. Dilution ratio: 1–3‰; dosage: 1–3 kg per thousand tons of water.