First, the product name: (Chinese name) PAC (short poly aluminum) Also known as: flocculants, coagulants [English name] Polyaluminium Chloride, abbreviated PAC [Molecular formula] [AL2 (OH) LnCL6-n] m [ Technical Standards] product quality in line with national GB15892-2003 standard. Two main features: PAC compared with other coagulants, has the following advantages: wide range of applications, adapt aqueous extensive. Easy to quickly form large alum, precipitation good performance. Suitable for a wide range of PH value (5-9 rooms), and the treated water PH value and alkalinity down small. When water temperature is low, can still maintain a stable sedimentation effect. Basicity than other aluminum, iron is high, small erosion of the equipment. Third, the physical and chemical indicators: PAC is an inorganic polymer coagulant. Mainly through the compression layer, charge neutralization and adsorption, adsorption bridging, sediment netting mechanism of action, etc., so that fine particulates and colloidal ionic edema destabilization, aggregation, flocculation, coagulation, sedimentation, to purify the treatment effect. Fourth, use: aluminum chloride (solid) and water at room temperature at 1/3 the weight ratio of dosing with stirring, until completely dissolved, then diluted with water to the desired concentration, the concentration of the raw water 100 ~ 500mg / a casting dosage is 3 ~ 6mg / I. specific dosing should be based on water test water quality, to select the best dosage and then put into use. Five, packaging and storage: Solid as a 25kg bag, the inner plastic film, outer plastic woven bag, PAC should be stored in dry, ventilated, cool place, and do not get wet. , The product uses   can sterilization, deodorization, bleaching, fluoride, aluminum, chromium, phenol, oil, turbidity, in addition to heavy metal salts, with the exception of radioactive contaminants in the purification of water has a wide variety of purposes, such as: 1 purify drinking water, sewage. (2) industrial water purification, industrial wastewater, mining, oil field injection water, clean paper, metallurgy, coal washing, leather and various chemical industrial waste water and so on. 3 Industrial production applications: paper sizing, printing dyeing, quick-setting cement, hardened precision casting, etc., can be used for refractory bonding, glycerine refining, sugar refining, wrinkle-free fabric, pharmaceutical and cosmetics industries and wastewater recycling use. 4 In the oil refining industry, for oil-water separation.