About polyacrylamide sedimentation time

As a linear polymer, polyacrylamide is an important and widely used polymer flocculant. It has obvious treatment effects on high turbidity water, low turbidity water and wastewater. Polyacrylamide Assisted Precipitation Principle: Organic macromolecules containing oil and polyacrylamide polar groups can not only adsorb and precipitate, but also form flocs with a uniform spatial network structure between particles with the help of macromolecular chains. Although it has no effect on the compression of precipitation, it greatly increases the rate of precipitation. Flocculation precipitation is the process by which particles flocculate and precipitate in water. After adding flocculant to the water, the colloids and dispersed particles of the suspended solids form flocs under the action of molecular force, collide and coalesce with each other during the sedimentation process, increase in size and mass, and increase in sedimentation rate. The alum formed by adding coagulants to surface water, organic suspended solids and activated sludge in domestic sewage will be flocculated and precipitated during the sedimentation process. What factors determine the flocculation and sedimentation time of polyacrylamide solution. First of all, for different sewage, we should choose the appropriate flocculant. There is also water quality issues. The hardness change of water quality also has an impact on flocculation settlement. PH value also has a certain effect on the flocculation and sedimentation effect of different types of polyacrylamide solutions. Avoiding the above problems can make the flocculation and sedimentation of polyacrylamide solution faster and achieve better results. While adding coagulants, adding a small amount of polyelectrolyte coagulants can improve coagulation conditions and coagulation effects. The role of coagulants in coagulation is divided into three categories: 1. Adjust pH. Each coagulant has its pH value. If the pH of the raw water does not meet the requirements, acids and alkalis should be added to adjust the pH. For example, lime and sulfuric acid. 2. Oxidation When ferrous sulfate is used as a coagulant, oxidizing agents are sometimes added. 3. Increase the particle size, density and hardness of the floc. Due to its large molecular weight and chain structure, it forms long chains in water, strongly adsorbs impurity particles in water, forms large flocculation, increases flocculation density, and is more conducive to precipitation. The main products of flocculant manufacturer Xinhuan Water Treatment are: White polyaluminium chloride (food grade), drinking grade polyaluminium chloride, industrial grade polyaluminium chloride, anionic polyacrylamide, cationic polyacrylamide, nonionic polyacrylamide, petroleum recycling polyacrylamide, oil recovery polyacrylamide, polyacrylamide, polymer flocculant polymer flocculation coagulant, polymeric ferrous sulphate, polymerized iron and aluminium chloride, and other water treatment chemicals. Welcome customers to write to us to negotiate business! Tel/WhatsApp：86 19139972558 Email：Sunny@xhwtm.com Contact:Sunny