Polyaluminum chloride as a new type of flocculant What are its main advantages? As we all know, currently the most widely used flocculant on the market is polyaluminum chloride, which is based on the production of practical experience at home and abroad summed up, and we Gongyi City, filtration source of water purification plant material as flocculant industry production and marketing of old-style enterprises , According to many years of practical experience summed up the advantages of PAC products, as follows: The first point: In the general raw water conditions, the flocculation effect is better than the commonly used inorganic flocculants, such as aluminum sulfate, ferrous sulfate, Ferric chloride and so on. For example, compared with aluminum sulfate, the effect is 1.25-2.00 times as low as the amount of alumina added (less than 500mg / L) in low turbidity, such as 3.75-6.00 times of the solid dosage The content of Al2O3 in the aluminum chloride is 45%, the content of Al2O3 in the solid aluminum sulfate is 15%, the same below); in the case of high turbidity (more than 500mg / L), it is 2.0-5.0 times as much as the dosage of alumina, If the solid dosage as 6.0-15.0 times. Compared with ferric chloride: According to the solid dosage (ferric chloride content of anhydrous FeCl3 analysis of 100%, the same below), the turbidity of raw water is less than 100mg / L, the effect is slightly lower, 0.7 -0.9 times. Raw water turbidity above 100mg / L, the effect of 2.0-5.0 times. After treatment, the turbidity and color of the effluent were lower than those of inorganic ones. The second point: the formation of flocs faster precipitation speed. Thus reaction, precipitation time can be shortened, under the appropriate conditions can increase the processing capacity of 1.5-3.0 times. The third point: Dehydration performance of precipitated sludge is higher than that of aluminum sulfate and lower than that of ferric chloride. Fourthly, at the same dosage, the alkalinity of polyaluminum chloride consumed in water is less than the alkalinity of water consumed by various inorganic flocculants, and the pH of treated effluent is also reduced. Therefore, when dealing with water, especially when dealing with high turbidity water, may not add or less alkaline additives and coagulant. Fifth point: suitable for a wide range of investment, excessive dosage is not easy to produce deteriorating water quality, which is conducive to operational management and improve water safety. Sixth: The appropriate raw water pH range wider than aluminum sulfate. The seventh point: adaptability to raw water temperature than aluminum sulfate. Eighth point: Turbidity, alkalinity, organic content changes adaptability. The ninth point: the treatment of salt in the water to increase less, so for the pharmaceutical industry, light industry, made of pure water pretreatment is more favorable. The tenth point: the cost of treatment of water is lower than the existing variety of inorganic flocculants, compared with aluminum sulfate and ferric chloride, water medicine costs can be reduced by 40% -75%. Eleventh point: The active ingredient (solid) is 2.5-3.0 times that of aluminum sulfate, adding less, which is beneficial for transportation and storage, which can reduce the labor intensity of the dosing system. Twelfth point: the dosing system and the operator's skin, clothing corrosive small, improved working conditions. Too often, everyone understands that when the environment is damaged some can be repaired externally, but others can not be repaired with more sophisticated scientific methods, so everyone should take care of the environment.