product manual

   The desulfurized water treatment agent-polyacrylamide is a water-soluble polymer. Insoluble in most organic solvents, has good flocculation and reduces frictional resistance between liquids.

Polyacrylamide

   Polyacrylamide is abbreviated as PAM and is divided into anion (HPAM) cation (CPAM). Nonionic (NPAM) is a linear polymer which is one of the most widely used varieties of water-soluble polymer compounds. And its derivatives can be used as effective flocculants, thickeners, paper enhancers and liquid drag reducers, etc., widely used in water treatment, paper, petroleum, coal, mining and metallurgy, geology, textile, construction, etc. Industrial sector. Desulfurization water treatment agent-polyacrylamide high-efficiency desulfurization synergist for strengthening limestone wet FGD desulfurization process, in which the auxiliary agent can promote the dissolution of limestone and the conversion of sulfur dioxide, reduce the scale and blockage of equipment, and increase the absorption slurry system. The reactivity, increase the reaction rate, increase the absorption efficiency, strengthen the desulfurization effect, and reduce the sulfur dioxide emissions in the smoke exhaust, so that the emissions reach the government's prescribed range.

Technical process for PAM precipitation

   Precipitation is the formation of a substance that is insoluble in the solution in which the reactants are present when a chemical reaction occurs. It is understood from the meaning of the word that it is removed by gravity. Suspended matter in sewage can be a physical process, simple and effective, and is one of the important technologies for sewage treatment. According to the nature and concentration of suspended matter and the flocculation performance of polyacrylamide, precipitation can be divided into: natural precipitation, flocculation precipitation, and regional precipitation. The sedimentation concentration of the sediment in the domain is higher (5000mg/L or more), the sedimentation of the particles is affected by other surrounding particles, the relative position between the particles remains unchanged, forming a whole sinking together, and there is a clear mud-water interface with the clarified water. . Regional precipitation occurs in both the secondary sedimentation tank and the sludge concentration tank. The concentration of suspended solids in the wastewater is not high, and it does not have the property of agglomeration. During the precipitation process, the solid particles do not change shape and do not adhere to each other, and the precipitation process is completed independently. (Initial precipitation of grit chamber and primary sedimentation tank) Compressed sedimentation occurs during the sedimentation process of high concentration suspended particles. Due to the high concentration of suspended particles, the particles are squeezed into agglomerate structure, contact each other, support each other, and the lower layer The water between the particles is extruded under the gravity of the upper particles to concentrate the sludge. The polyacrylamide concentration process in the sludge tank of the secondary sedimentation tank and the concentration process of the sludge in the concentration tank have a compression precipitate. Free precipitation occurs in the concentration of suspended solids in water is not high, the suspended solids in the precipitation process do not interfere with each other, the particles are separately precipitated, and the sedimentation trajectory of the particles is straight. The physical properties of the particles, such as shape, size and specific gravity, do not change throughout the precipitation process. The precipitation of such particles in the grit chamber is free precipitation. The concentration of suspended solids in the wastewater is not high, and it does not have the property of agglomeration. During the precipitation process, the solid particles do not change shape and do not adhere to each other, and the precipitation process is completed independently. (Initial precipitation of grit chamber and primary sedimentation tank) Compressed sedimentation occurs during the sedimentation process of high concentration suspended particles. Due to the high concentration of suspended particles, the particles are squeezed into agglomerate structure, contact each other, support each other, and the lower layer The water between the particles is extruded under the gravity of the upper particles to concentrate the sludge. The concentration process in the sludge tank of the secondary sedimentation tank and the concentration of sludge in the concentration tank have a compressed polyacrylamide precipitate. Flocculation precipitation is the process of flocculation and precipitation of particulate matter in water. After the coagulant is added to the water, the colloidal and dispersed particles of the suspended matter form floccules under the interaction of molecular forces and collide and collide with each other during the sedimentation process, and the size and quality thereof become larger and the rate of sinking increases. . The removal rate of suspended solids depends not only on the rate of precipitation but also on the depth of sedimentation. The sassafras formed by adding coagulant in the surface water, the organic suspended matter in the domestic sewage, and the activated sludge will flocculate and precipitate during the precipitation process.

Product use characteristics

1. Flocculation: PAM can make suspended matter through electric neutralization, bridging adsorption, and flocculation.

2. Adhesiveness: It can be bonded by mechanical, physical and chemical effects.

3, resistance reduction: PAM can effectively reduce the frictional resistance of the fluid, adding a small amount of PAM in water can reduce the resistance by 50-80%.

4, thickening: PAM has thickening effect under neutral and acid conditions, when the PH value is above 10, PAM is easy to hydrolyze. Thickening will be more pronounced when in a semi-mesh structure.

Application range

   Mainly used for sludge dewatering, solid-liquid separation and coal washing, beneficiation and papermaking wastewater recycling. It is especially suitable for flocculation and dehydration of desulfurization wastewater in power plants. It can be used in industrial wastewater and urban domestic sewage treatment. Used in the paper industry to improve the dry and wet strength of paper and improve the retention of fine fibers and fillers. It can be used as an additive for oil materials and geological exploration drilling mud materials.

Other uses

   1) For sludge dewatering According to the nature of the sludge, the corresponding model of this product can be selected, which can effectively carry out sludge dewatering before the sludge enters the pressure filtration. When dewatering, the flocculation is large, the non-stick filter cloth is not used, and the filter is not Dispersed, the mud cake is thicker, the dewatering efficiency is high, and the moisture content of the mud cake is below 80%. 2) It is used for the treatment of domestic sewage and organic wastewater. The product is positive in the compound or alkaline medium, so that the sewage with suspended charge in the sewage is flocculated and precipitated, and the clarification is very effective. Such as the production of grain alcohol wastewater, papermaking wastewater, municipal wastewater treatment plant wastewater, beer wastewater, MSG wastewater, sugar wastewater, high organic content wastewater, feed wastewater, textile printing and dyeing wastewater, etc., with cationic polyacrylamide than with anions, The effect of nonionic polyacrylamide or inorganic salts is several times or several times higher, because such wastewater is generally negatively charged. 3) The flocculant used for tap water with river water as the water source, the dosage is small, the effect is good, the cost is low, especially the combination with inorganic flocculant is better, it will become the tap water for treating the Yangtze River, the Yellow River and other river basins. The factory's high-efficiency flocculant. 4) Paper reinforcing agents and other additives. Improve the retention rate of fillers, pigments, etc., and the strength of paper. 5) Used in oilfield auxiliaries, such as clay anti-swelling agent, thickening agent for oil field acidification. 6) It is used for textile sizing agent and slurry, with stable performance, less falling pulp, low fabric breakage rate and smooth surface.