A cationic polyacrylamide materials, properties and applications: cationic polyacrylamide (CPAM) appearance of white powder, ion of from 20% to 55% water soluble, can be dissolved in water in any proportion and insoluble organic solvent. It was high polymer electrolyte characteristics for negative charge and organic matter-rich wastewater treatment. Suitable for high dyeing, paper, food, construction, metallurgy, mineral processing, coal, oil, aquatic products processing industry and other fermented organic colloid content of waste water treatment, especially for urban sewage, sludge, paper sludge and other industrial dewatering sludge. Cationic polyacrylamide according to different forms of solid particles can be divided into two kinds of materials and an emulsion forms, the most widely used on the market today is a solid particulate, and cationic polyacrylamide emulsion as a new form of product markets is seldom used. Second, the use of cationic polyacrylamide: 1 for sludge dewatering can choose the appropriate model of the product according to the nature of the sludge, the sludge can be effective prior to entering the filter press sludge dewatering, dehydration, a large floc, sticky cloth, filter press to leave and flow thick mud cake, dehydration, high efficiency, the cake moisture content below 80%. 2, for sewage and organic wastewater treatment, this product is equipped or alkaline medium showed a cationic, so that the sewage effluent suspended particles with a negative charge by a flocculation, clarification is very effective. 3, for the water to river water for tap water treatment flocculant, with less effect, low cost, especially inorganic flocculant use better, it will become the rule tap the Yangtze River, Yellow River and other watersheds Factory efficient flocculant. 4, paper reinforcing agent and other additives. Improve retention rates, the strength of the paper fillers, pigments and the like. 5 for oil additives classics, such as clay anti-swelling agent, oil acidification thickening agent. 6, for textile sizing agents, serous stable performance, down less pulp, fabric breakage rate is low, clean cloth. Third, cationic polyacrylamide role: 1, to clarify purification, 2, settlement promote, 3, filtered promote, 4, thickening effect and other effects. It is possible to fully meet the requirements of the waste water treatment, sludge dewatering, mineral processing, coal washing, paper and other areas. Fourth, cationic polyacrylamide features: 1, water-soluble, it can be completely dissolved in cold water. CPAM 2, add a small amount of cationic polyacrylamide products, can be greatly flocculation. Usually just add 0.01 ~ 10ppm (0.01 ~ 10g / m3), to be fully effective. 3, using cationic polyacrylamide products and inorganic coagulant (PFS, chloride, iron salts, etc.), may show greater effects. Five common applications of cationic polyacrylamide: 1, as a flocculant, mainly used in industrial solid-liquid separation process, including sedimentation, clarification, concentration and sludge dewatering processes, applications, major industries: urban sewage treatment , paper industry, food processing industry, petrochemical industry, metallurgical industry, mineral industry, dyeing industry and the sugar industry and a variety of industrial wastewater treatment. The use in urban sewage and meat, poultry and food processing wastewater treatment process sludge sedimentation and sludge dewatering, through which contains positively charged groups of the sludge in organic colloid electrically negative charge and the role and Polymer excellent cohesion bridging function, promote aggregation of colloidal particles into large floc is separated from the suspension. The effect is obvious, low dosage. 2, can be used in the paper industry paper dry strength agents, retention agents, filter aids, can greatly improve the paper quality, save costs and improve the paper mill's production capacity. Electrostatic bridge can occur directly in order to achieve enhanced physical strength of paper, reduce the loss of fibers or fillers to accelerate drainage, from the enhanced retention of inorganic ions, fiber and other organic polymers, filter aids, can also be used Whitewater treatment, while in the de-inking process can play a significant flocculation. 3, fiber slurry (asbestos - cement products) and allows molding asbestos - cement products, and drainage is improved, the strength of the asbestos blank improved; insulating board, you can increase the binding capacity of additives and fibers. 4, in the mining, coal preparation industry can be used for mine waste water, coal washing wastewater clarifier. 5, can be used for dyeing wastewater, leather wastewater, oily wastewater treatment, so turbidity, bleaching, in order to meet emission standards. 6, in the phosphoric acid purification, and contribute to the separation process in WPA gypsum. 7, river water is used to water plants water treatment flocculant.