Polyacrylamide paper additives | sewage treatment polyacrylamide | water treatment polyacrylamide ..

Polyacrylamide (cpolyacrylamids) called PAM, is divided anion (HPAM) cation (CPAM), a non-ionic (NPAM) is a linear polymer, water-soluble polymer is one of the most widely used varieties, polyacrylamide and its derivatives can be used as an effective flocculants, thickeners, paper reinforcing agent and a liquid drag reduction agents, widely used in water treatment, paper, petroleum, coal, mining, geology, textile , construction and other industrial sectors. PAM Physical Properties and Characteristics 1. Physical properties: Formula (CH2CHCONH2) r PAM is a linear polymer, which is soluble in water, almost insoluble in benzene, ethyl benzene, esters, acetone and other common organic solvents, Their solution almost transparent viscous liquid, non-dangerous goods, non-toxic, non-corrosive, solid PAM hygroscopic, moisture absorption increases with the degree of ion, good thermal stability PAM; heated to 100 ° C stability It is good, but at above 150 ° C decompose to produce nitrogen occurs in intermolecular imidization not soluble in water, the density (g) cc 23 ° C 1.302. The glass transition temperature of 153 ° C, PAM under stress exhibit non-Newtonian flow properties. 2, using the characteristics of flocculation: PAM allows suspended material by charge neutralization, bridging adsorption, since flocculation. Adhesion: through mechanical, physical and chemical effects, since adhesion. Reduction in resistance: PAM can effectively reduce fluid friction, water with traces of PAM can drop resistance 50-80%. Thickening: PAM have a thickening effect in neutral and acidic conditions, when the PH value of above 10 ° C PAM easy hydrolysis, semi-mesh structure, thickening more obvious. 3, the role of the principle of PAM Description: flocculation principle: PAM used for flocculation, with the kind of floc surface properties, especially PH value of zeta potential, viscosity, turbidity and suspension related to the particle surface zeta potential is Reasons to join inhibitor particles surface charge opposite PAM, can snap a potential decrease in cohesion. Adsorption bridging: PAM molecular chain immobilized on the surface of different particles, forming a bridge between the polymer particles, the particles form aggregates and settle. Adsorption: various polar groups adsorbed particles PAM molecule. Enhancement: PAM molecular chain and dispersed by a variety of mechanical, physical, chemical and so on, will be involved with the dispersed phase to form a network, which in turn has enhanced the role. Polyacrylamide main purposes: polyacrylamide (PAM) high molecular weight, water-soluble, and can adjust the molecular weight, and can introduce a variety of ionic groups to obtain a specific performance. Low molecular weight material is effectively dispersed by the swap or stabilizer, high molecular weight flocculant is important. It can produce the water-insoluble hydrophilic gel, and its surface dissolved substances many groups have good adhesion. Because of these properties are widely used PAM flocculation, thickening, drag reduction, gels, adhesive, scale, and other fields. Second, the major technical indicators Appearance: white granule Solid content: ≥88% Molecular weight: 600-2000 Wan anion: ion: 20% -30% (adjustable) cation: Ion degree: 5--60% nonionic: Ion degree 1-4% cationic species anionic nonionic amphoteric Appearance white granular white particles white particles white particles Solid content,% ≥90 ≥90 ≥90 ≥90 molecular Wan ion 300-2000 300-1500 300-1500 300-1500 degree,% 20-305-600-3 any proportion of insoluble matter% ≤0.1 ≤0.1 ≤0.1 ≤0.1 solid dissolved time (min) ≤40 ≤90 ≤60 ≤90 use weak overcast neutral and weakly acidic conditions liquid separation: paper, mineral processing, smelting secondary treatment of sewage and other industrial wastewater weak positive pulp mill sludge dewatering, solid-liquid separation in industrial dewatering neutral, strongly acidic, strongly basic conditions: 1. Paper and pulp wastewater 2. Mineral processing and metal smelting process wastewater. 3. 4 steel plant wastewater. The proportion of other industrial wastewater difficult flotation wastewater treatment, intractable biological sludge, dead mud, solid-liquid separation beneficiation shade under both acidic and basic silt dehydration, coal, metal processing, chemical, food, textile, printing and dyeing, sugar, drinking water and other industrial waste, oil flooding Yang sewage treatment plants and industrial wastewater treatment plant sludge dewatering organic sludge dewatering mills, breweries, pharmaceutical plants and other sludge dewatering yin yang stronger Oilfield three mining: strong female weak industrial wastewater treatment under alkaline conditions the solid-liquid separation: metallurgy, mineral processing, aluminum mining and other additives strong positive oily wastewater treatment, sewage treatment, manure sewage treatment, chemical fiber and other industrial wastewater treatment sun stronger than the female difficult dehydrated dehydrated organic sludge, sewage treatment plant biosolids treatment, paper mill sludge biological and chemical processing package 25 kg / bag 25 kg / bag 25 kg / bag 25 kg / bag