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Comprehensive use of polyacrylamide
- Sep 04, 2018 -

Water treatment field. The application of Pam in water treatment industry mainly includes 3 aspects of raw water treatment, sewage treatment and industrial water treatment. In the raw water treatment, Pam and activated carbon and other uses, can be used in living water suspension particles condensation and clarification; in sewage treatment. Pam can be used for sludge dewatering; in industrial water treatment, Pam is mainly used as a formulation agent. In the raw water treatment, using organic flocculant Pam instead of inorganic flocculant, even if the sedimentation pond is not reformed, the water purification capacity can be increased by more than 20%. Industrial wastewater treatment, especially for suspended particles, thicker, high concentration, particles with a positive charge, the ph value of the water is neutral or alkaline sewage, steel mill wastewater, electroplating plant Wastewater, metallurgical wastewater, coal washing wastewater treatment, the best results.

In the sewage treatment, the use of Pam can increase the water reuse cycle utilization. Oil recovery field. In the oil exploitation, Pam is mainly used in drilling mud materials and improve the oil recovery rate, etc., widely used in drilling, completion, cementing, fracturing, enhanced oil production and other oilfield mining operations, with increased viscosity, drop filter loss, rheological adjustment, gelling, shunt, profile adjustment and other functions. At present, China's oilfield mining has entered the middle and late stage, in order to improve oil recovery rate, improve oil-water velocity ratio, so that the content of crude oil in the extract increased.

Polymer flooding technology has been widely used in Daqing oilfield and Shengli oilfield due to the special geological conditions. Paper industry. Pam is widely used as resident agent, Filter aid, and homogenizing agent in papermaking field. Its role is to improve the quality of paper, improve slurry dewatering performance, improve the retention rate of fine fibers and fillers, reduce the consumption of raw materials and environmental pollution. The effect of Pam in papermaking depends on its average molecular weight, ionic properties, ionic strength and the activity of other copolymers. Nonionic Pam is mainly used for improving pulp filtration, increasing the strength of dry paper, increasing the retention rate of fiber and filler; anionic copolymer is mainly used as wet and dry reinforcing agent and resident agent of paper, cationic copolymer is mainly applied to papermaking wastewater treatment and filtering, and also has good effect on improving retention rate of fillers.

In addition, Pam is used in papermaking wastewater treatment and fiber recycling. Textile in the textile industry, Pam as a fabric post-treatment sizing agent, finishing agent, can produce supple, anti-wrinkle, mold-resistant protective layer.

Using its hygroscopic characteristics, can reduce the yarn breakage rate; Pam is used as a post-treatment agent to prevent the fabric from electrostatic and flame-retardant; as a printing and dyeing agent, Pam can make the product adhesion fastness, high brightness, also can be used as a bleaching non-silicone polymer stabilizer; In addition, Pam can be applied to the efficient purification of textile dyeing wastewater. Other areas in the field of mining, coal washing, Pam as a flocculant can promote mining, coal washing recovery of solids in the settlement of water, water clarification, and can recover useful solid particles, to avoid environmental pollution; in the sugar industry, Pam accelerates the sinking of fine particles in sugarcane juice, facilitates filtration and improves filtrate clarity. In the culture industry, Pam can improve water quality, increase the light transmittance of water, and thus improve the photosynthesis of waters; in the pharmaceutical industry, Pam can be used as a flocculant for separating antibiotics, as an adhesive for tablets and as a process water clarifying agent. In the building materials industry, Pam can be used as a coating thickening dispersant, Sawn stone plate coolant and ceramic adhesive, etc. in agriculture, Pam can be used as a super absorbent material as soil moisturizer and seed culture agent. In the construction industry, Pam can increase the hardness of gypsum cement and accelerate the dehydration rate of asbestos cement.

In addition, Pam can also be used as a protective coating for natural or synthetic leather, as well as a inorganic fertilizer granulation agent. The quantity of anionic polyacrylamide in the coal washing pond is a very important subject. If the increase is too large, it creates a waste, if not enough, it is difficult to produce results, so the correct rational use should be 1 per thousand to 2 per thousand of the ratio, that is, 1, 2 pounds of amide, you can use 1000 pounds of water. According to this indicator, under normal circumstances, can be in a certain period of time, the successful separation of coal and water, after separating the surface of the water out, and then left the bottom of the pool of slime, after drying and drying, can be used as normal coal.


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