PAC (PAC) 
 PAC is an inorganic polymer coagulant, due to the bridging role of hydroxide ions and polyvalent anion polymerization and production of high molecular weight, charge higher inorganic polymer water treatment chemicals. 
 A? PAC (referred to as poly-aluminum) 
 [English name] Polyaluminium Chloride, abbreviated as PAC 
 [Formula] [AL2 (OH) LnCL6-n] m 
 [Technical standard] the product quality in line with national GB15892-2003 standard 
 [Appearance] golden yellow, khaki, brown, red and granular / flake 
 [Product form] powdered solid and liquid 

 Two? Mechanism 
 Poly (co) of aluminum chloride formula is as follows: [AL2 (OH) nCL6-n] (n is 1-5.m ≤ 10) Basicity: B = n / 6 × 100%, its flocculation performance are as follows: 
 a, colloidal substances and the role of the strong power. 
 b, hydrolysis products of the fine suspended solids in water bridging adsorption. 
 c, for the selective adsorption of dissolved substances. 
 Poly (co) of aluminum chloride in water is the main form [AL13O4 (OH) 24] 7 + 
 Three? Performance 
 a, purified water is better than aluminum sulfate coagulant, water costs 15-30% lower compared. b, floc formation of fast settling velocity faster than the traditional products such as aluminum sulfate processing capacity. c, lower consumption of water alkalinity of inorganic flocculants, and thus less time to cast vote in alkali. d, to adapt the source water PH5.0-9.0 range can be condensed. e, corrosive, good operating conditions. f, solubility than aluminum sulfate. g, treated water salinity increased less conducive to ion exchange treatment and high purity of water. h, the adaptability of the source water temperature than aluminum sulfate and other inorganic flocculants. 
 Four? Pattern classification 
 a, PAC is not dry and liquid form, there is no dilution, loading and unloading easy to use, relatively cheap, advantages, disadvantages is the need for tanker transport, unit transportation costs (equivalent to 2-3 tons per ton of solid-liquid) 
 b, the solid PAC dried form, have the advantages of convenient transportation, no tank, the disadvantage is also needed to use dilution, increased work intensity. 

 Five? Poly (co-) use of aluminum chloride 
 a, purification of city water supply and drainage: river water, reservoir water, groundwater, b, industrial water purification c, urban sewage treatment d, industrial wastewater and sludge in the recovery of useful material to promote the settlement of coal washing waste water, starch, starch manufacturing recycling e, a variety of industrial wastewater treatment: dyeing wastewater, leather waste, fluorine-containing waste water, heavy water, oily waste, paper waste, coal washing waste water, mining waste, brewing water, metallurgical waste, meat processing wastewater f, sewage treatment g, paper sizing h, refined sugar i, casting molding j, cloth crease k, catalyst l, medicine refined m, quick-setting cement, n, cosmetic raw materials. 
 Six? Use 
 1, the dosage varies depending on the water being processed, the general dosage is about clean water: liquid products 5-100 g / t, solid 20--25 kg / ton (commodity dollars) can be determined by the test beaker. 
 2, the preparation can be directly added to the water, add water according to the dosage and treatment decisions of water, add water, mix well after. 
 Seven? Note 
 1, different manufacturers or different brands of water treatment chemicals can not be mixed, and shall not be mixed with other chemicals stored. 
 2, slightly corrosive liquid and diluent, but lower than other inorganic flocculants. 
 3, the product effective storage period: half liquid, solid two years. Solid products can be used even after the tide. 
 4, after reasonable dosing of this product, purified drinking water meets health standards. 

 Eight? PAC application areas: 
 1, water treatment: domestic water, industrial water; 
 2, the urban sewage treatment; 
 3, industrial wastewater, sewage, Wu sewage sludge treatment and recycling of certain slag; 
 4, for certain treatment of industrial wastewater difficult to PAC for the mother, and mixed with other agents, deployment into complex PAC, sewage treatment effect can be pleasantly surprised. 

 Nine? Packaging and storage: 
 1 is non-toxic, pay attention to moisture, rain, avoid sun exposure. Storage period: 2 years, 25KG woven bag (lined with plastic bag brown paper bags to plastic coated). 
 2? Liquid tankers and distribution of this product, also based on user requirements