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01
2021
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02
Brief Analysis of Several Application Fields of Polyacrylamide
Special polyacrylamide for municipal sewage: it is often used together with activated carbon for raw water treatment. it can be used for coagulation and purification of suspended particles in domestic water. organic flocculant polyacrylamide is used instead of inorganic flocculant. even if the sedimentation tank is not reformed, the water purification capacity can be improved by more than 20%. In municipal sewage treatment, the use of special polyacrylamide for municipal sewage can improve the utilization rate of water recycling for sludge dewatering, as an important formulation agent in industrial water treatment, polyacrylamide plays a major role in urban sewage: reducing the amount of flocculant.
Under the premise of achieving the same water quality, municipal sewage special polyacrylamide can be used as a coagulant together with other flocculants, which can greatly reduce the amount of flocculant. In order to improve water quality, in water treatment and industrial wastewater treatment, the use of polyacrylamide and inorganic flocculants can significantly change water quality, increase floc size and sedimentation speed. The flocculate formed by polyacrylamide has high strength, good settling performance, and the improvement of solid-liquid separation speed is conducive to sludge dewatering, anti-corrosion and anti-scaling of circulating cooling system, and the use of polyacrylamide can greatly reduce the amount of inorganic flocculant, thus avoiding the deposition of inorganic substances on the surface of the equipment and slowing down the rate of corrosion and scaling.
Oilfield-specific polyacrylamide: widely used in drilling, cementing, completion, workover, fracturing, acidizing, water injection, water shutoff profile control, tertiary oil recovery operations, especially in drilling, water shutoff control section and tertiary oil recovery field, oilfield-specific polyacrylamide aqueous solution has high viscosity, good thickening, flocculation and rheology. Used as oil displacement agent and drilling mud regulator in oil exploration, in the middle and late stages of oil exploration, in order to improve oil recovery, China's current main promotion of polymer drive and three-way combined oil drive technology. By injecting polyacrylamide aqueous solution, the oil-water flow ratio is improved, and the crude oil content in the produced material is increased. Adding polyacrylamide in tertiary oil recovery can improve the oil displacement ability, avoid oil layer rupture, and improve oil recovery. China's petroleum industry is a large user of polyacrylamide. The technical progress of polyacrylamide for oilfields has promoted the development of China's petroleum industry, and the demand of the petroleum industry has accelerated the pace of technological innovation and industrial development of polyacrylamide.
Papermill-specific polyacrylamide: Polyacrylamide is widely used as a flow aid, filter aid, leveling agent, etc. in the field of papermaking to improve paper quality, pulp dewatering performance, retain fine fibers and fillers and reduce the consumption and consumption of raw materials, can be used as a dispersant to improve the uniformity of paper. Polyacrylamide is mainly used in two aspects of the paper industry. One is to improve the retention rate of fillers and pigments, reduce raw material loss and environmental pollution, and the other is to increase the strength of paper. The addition of polyacrylamide to paper materials can improve The retention rate of fine fibers and filler particles on the net accelerates the dehydration of paper materials. The formation of flocs can also make the water in the slurry easier to filter out, thus reducing the amount of fiber content lost in the whitewater medium reduces pollution to the environment and helps to improve the efficiency of the filtration and precipitation equipment.
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