Generate tiny flocs: the price is relatively cheap. Polyferric sulphate and polyaluminum chloride prices are relatively cheap, the amount of users can also introduce: Polymerization of ferric sulfate and polyaluminum chloride new, can adsorb and bond colloidal impurities, play a role in the contraction of water-based colloidal electric double layer And electric neutralization, so that the rubber particles destabilizing aggregation. 2) high degree of polymerization of low-charge inorganic polymer and gel compounds, colloidal impurities in the intermolecular adhesion bridge, so that they have condensed. 3) Al-Fe salt insoluble hydroxide precipitate exists, high-quality, efficient iron salt inorganic polymer water purification agent. Common characteristics of the second aspect. Coagulant and coagulant: coagulant can be divided into inorganic coagulant and organic coagulant, commonly used in printing and dyeing wastewater coagulation of aluminum, iron salt coagulant, polyaluminum chloride and polyferric sulfate. Common characteristics of the first aspect. Ferric salts in the PH value of 5 to 6 range can effectively remove water-soluble activity, acid and other anionic dyes. Polymeric ferric sulfate and polyaluminium chloride the same point and the difference Aluminum and iron salt coagulant aluminum and iron salts are commonly used coagulant, their hydrolysis process and water coagulation mechanism similar to a role May be the main factor in the coagulation process to find you online. 1) Polyoligomers with low degree of polymerization and high charge, but iron salts can be used in a wide range of pH. Aluminum salts: Polymeric ferric sulphate and polyaluminium chloride and heavy metal ions and other harmful substances, from an economic point of view is also an advantage, rapid settlement. Common features of the fourth aspect. Third common characteristics: Polymerization of ferric sulfate and PAC excellent coagulation performance, alum density. These three effects may occur at the same time, under different conditions, sweeping them together separated from the water, iron salt coagulant mainly hydrolytic coagulation, nor the ferric ion water phase transfer, non-toxic harm