In today's China and the world, the reasons for the huge demand for polyaluminum chloride 1. Excellent coagulation Turbidity removal and humus removal effect and the wider use of pH range Poly aluminum chloride not only has a strong condensate turbidity effect, but also With significant bleaching and humus removal. In the same treatment conditions to achieve the best flocculation, the required dosage of aluminum polyalkylene to reduce the traditional 2/3 as much. Under the same dosage conditions, the use of polyaluminium can achieve lower residual turbidity than conventional aluminum salts, so that the same treatment results can be obtained at lower dosages. In addition, polymeric aluminum is used at much wider pH ranges than conventional aluminum salts. 2. Good low-temperature coagulation treatment efficiency and settling efficiency Generally in the low-temperature water (<5 ℃), the coagulant turbidity reduction efficiency of traditional coagulants significantly reduced and lead to deterioration of water quality, and the use of aluminum, both low temperature Or room temperature water, can get better coagulation turbidity effect. In addition, polyaluminum chloride can significantly improve the solid-liquid separation efficiency, improve sedimentation filtration and sludge dewatering performance, thereby shortening the settling tank residence time and increase water production. In addition, filtration and sludge dewatering are facilitated due to the large and compact flocs produced. 3. The lower residual aluminum content After treatment with polyaluminum chloride residual aluminum content is very low, the traditional aluminum sulfate treatment of residual aluminum content is generally 150 ~ 255μg / L, and polyaluminum chloride in the treatment of water quality Residual aluminum content of only 40 ~ 55μg / L. 4 easy to operate the use of polyaluminum chloride treatment process is relatively simple and easy to handle. Polyaluminum chloride should be based on the water quality for a small test, select the water effect is good, the best volume of small points. The solution should be used along with the use of non-potable water should be based on the actual situation of the selected amount. In general, the product solid and room temperature water at a weight ratio of 1: 3 while stirring while dosing until completely dissolved, then diluted with water to the desired concentration. Raw water turbidity 100-500mg / I, the dosage is 3-6mg / I. In addition, the use of the product should pay attention to different manufacturers or different grades of water treatment agents can not be mixed, and may not be mixed with other chemicals. Polyaluminum chloride purified water quality is better than aluminum sulfate flocculant, the cost of water purification is 15-30% lower than that; flocs formed quickly, settling speed, processing capacity than the traditional products such as aluminum sulfate; adaptation Source water PH5.0-9.0 range can be condensed. Its small corrosive, good operating conditions, solubility better than aluminum sulfate; and adaptability of the source water temperature is better than inorganic flocculants such as aluminum sulfate. The polyaluminum chloride rationally added, purified water quality in line with drinking water health standards.