Cationic polyacrylamide (CPAM) is a linear polymer, because it has a variety of active groups, can be compatible with many substances, adsorption, forming hydrogen bonds. Mainly flocculation the negatively charged colloid, with the removal of turbidity and decoloring, adsorption, adhesion and other functions, suitable for dyeing wastewater, papermaking, food, building, metallurgy, mineral processing, coal, oil, aquatic products processing and fermentation of organic colloid content is higher, especially suitable for dewatering sludge, sewage, city city papermaking sludge and other industrial sludge.
1、used for sludge dewatering sludge according to the corresponding types of properties can choose this product, can be effective before the sludge into the filter press sludge dewatering, dehydration, floc, non stick cloth, filter without loose, the flow of mud cake thick, high dewatering efficiency, the cake moisture content below 80%.
2、for domestic sewage and organic wastewater treatment, this product in the coordination or alkaline medium are positive electricity, so that the sewage suspended particles with negative charge of sewage flocculation, sedimentation, clarification is very effective. Such as the production of grain alcohol wastewater, papermaking wastewater, waste water, city sewage treatment plant wastewater, monosodium glutamate wastewater, sugar wastewater, organic wastewater, high content of feed wastewater, textile printing and dyeing wastewater, with cationic polyacrylamide than with anionic, nonionic polyacrylamide or the effect of inorganic salts to several times or dozens of times, because this waste water is generally negative charge.
3、The flocculant for the treatment of tap water with river water as the source of water has the advantages of less dosage, good effect and low cost, especially with inorganic flocculants. It will become a high effective flocculant for the waterworks in the Yangtze River, the Yellow River and other river basins.
4、Reinforcing agent and other auxiliaries for paper making. Increase the retention rate of filler and pigment and the strength of paper.
5、Used as auxiliary agent for oilfield research, such as clay anti swelling agent, thickening agent for oilfield acidizing.
6、used in textile sizing agent, slurry performance is stable, less pulp, fabric breakage rate is low, the cloth surface is smooth.
Matters needing attention in cationic polyacrylamide:
1、floc size: floc too small will affect the speed of drainage, floc too general to make floc bound more water, and reduce clay biscuits. The size of flocs can be adjusted by selecting the molecular weight of polyacrylamide.
2、Sludge characteristics. The first point is to understand the source, characteristics and composition of the sludge, and the proportion of the sludge. According to the different properties, the sludge can be divided into two kinds of organic and inorganic sludge. Cationic polyacrylamide for disposal of organic sludge, anionic polyacrylamide relative for inorganic sludge, strongly alkaline with strong acidic cationic polyacrylamide, and should not be used when anionic polyacrylamide, solid content of sludge is usually large amount of polyacrylamide.
3、floc strength: floc should be stable and not broken under shear action. Improving the molecular weight of polyacrylamide or selecting suitable molecular structures contribute to the improvement of floc stability.
4、the ion polyacrylamide: for the dehydration of the sludge, available in different degrees after ion flocculant do first test stop selection, select the best suitable polyacrylamide, so as to get the best flocculant dosage effect, and can make the least cost savings. 5, the dissolution of polyacrylamide: dissolved good talent, fully play the role of flocculation. Sometimes the demand accelerates the dissolution rate, and then the concentration of progressive polyacrylamide solution can be considered.