Gongyi Filter Industry Co., Ltd.

Polyaluminium chloride role and performance is what?

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2017-12-05 13:19:42

Polyaluminum chloride is a new type of inorganic polymer water treatment flocculant, accompanied by electrochemical hydrolysis in the hydrolysis process, with strong bridging adsorption and cohesion, the product is mainly used for domestic water, industrial Water purification and industrial wastewater treatment, in papermaking, printing and dyeing, precision casting, sugar, medicine, leather, petrochemical and other industries also have a wide range of uses. Main Specifications Item Quality Index Aluminum Chloride (A1203) Content% ≥ 28 Basicity% 60--85 Water Insoluble Content% 1.5 PH (1% aqueous solution) 3.5--4.3 Sulfate (SO4 ) Content% ≤ 9.8 Arsenic (AS) content% ≤ 0.0005 Manganese (mn) content% ≤ 0.0075 Hexavalent chromium (Cr) content% ≤ 0.0015 Hg content% ≤ 0.00002 Lead (Pd) content% ≤ 0.003 Cadmium (Cd) content% ≤ 0.0006 Usage and dosage 1. When using this product first, add water to prepare 5-10% solution (also dry cast) Stir well into the water equipment can be. Diluted solution should be within 24 hours run out, so as not to reduce the use of effect. 2. The amount of this product should be treated as the turbidity of the water, water test can determine the best dosage, dosage in different regions of our country is different. Polyaluminium Chloride, abbreviated PAC [Molecular Formula] [AL2 (OH) nCL6-n] m [Technical Standards] Product quality in line with national standards GB15892-2003 1, poly (co) Aluminum chloride mechanism Poly (co) aluminum chloride is an inorganic polymer coagulant, due to the bridging effect of hydroxide ions and the polymerization of polyvalent anions produced by the larger molecular weight, higher charge inorganic Polymer water treatment agents. The molecular formula is as follows: [AL2 (OH) nCL6-n] (n is 1-5.m≤10) Basicity of the salt: B = n / 6 × 100%, its coagulation performance as follows: a, strong colloidal substances Electric neutrality. B, hydrolyzate of water suspended solids excellent bridging adsorption. C, the selective adsorption of dissolved substances. The main form of poly (co) aluminum chloride in water is AL13O4 (OH) 247 + 2. The properties of poly (co) aluminum chloride are: a. The purified water is better than aluminum sulfate coagulant, Low 15-30%. b, rapid formation of flocs, settling speed, processing capacity than the traditional products such as aluminum sulfate. c, water consumption alkalinity lower than a variety of inorganic coagulant, which can not vote or less cast alkali. d, to adapt to the source water PH5.0-9.0 range can be condensed. e, corrosive, good operating conditions. f, solubility better than aluminum sulfate. g, treatment of salt in the water increased less conducive to ion exchange treatment and high purity water. h, adaptability to source water temperature is better than inorganic coagulant such as aluminum sulfate. 3, poly (co) aluminum chloride classification a, liquid poly (co) aluminum chloride is not dry form, there is no dilution, loading and unloading easy to use, the price is relatively cheap, the disadvantage is the transport needs of tankers, unit transportation costs increase (Equivalent to 2-3 tons per ton of solid liquid) b, solid poly (co) aluminum chloride after drying form, easy to transport advantages, do not need tanker, the disadvantage is the use of diluted also need to increase the work intensity. , The use of poly (co) aluminum chloride a, urban water supply and drainage purification: river water, reservoir water, groundwater b, industrial water purification c, urban sewage treatment d, industrial waste water and waste recycling of useful substances to promote coal washing wastewater The settlement of pulverized coal, the recovery of starch in the starch manufacturing industry e, various industrial wastewater treatment: printing and dyeing wastewater, leather wastewater, fluorine-containing wastewater, heavy metal wastewater, oily wastewater, papermaking wastewater, coal washing wastewater, mining wastewater, brewing wastewater, , Meat processing wastewater f, sewage treatment g, paper sizing h, sugar refining i, casting molding j, anti-wrinkle cloth k, catalyst carrier l, medicine System m, quick-setting cement n, cosmetic raw materials. Usage: 1, depending on the amount of water to be treated vary, the general feed water purification dosage is: liquid products 5-100 grams / ton, solid 20--25 kg / ton (in goods), through the beaker Test decision. 2, the preparation can be directly added to the water, the amount of water can be added and treated according to the amount of water treatment, add water, stir well. Matters needing attention: 1, different manufacturers or different brands of water treatment chemicals can not be mixed, and may not be mixed with other chemicals. 2, stock solution and dilute slightly corrosive, but lower than other kinds of inorganic coagulant. 3, the product effective storage period: liquid six months, solid two years. Solid product tide can still be used. 4, the product after reasonable dosing, purified water quality in line with drinking water health standards. Polyaluminium Chloride, abbreviated PAC [Molecular Formula] [AL2 (OH) LnCL6-n] m [Technical Standards] Product quality in line with the national standard GB15892-2003 【Characteristics of spray drying】 Pressure spray drying Polyaluminum chloride is mainly characterized by the working principle of the pressure atomizer, so that the drying system has its own characteristics. As the pressure spray-dried products are porous particles or hollow particles, the use of pressure spray-drying, and more to obtain a granular product for the purpose of the resulting granular product has excellent dust resistance and flow properties. Due to the larger contact area between product and water, wetting performance is better than powdered product, purifying water significantly faster than powdered product, and pressure spray-dried product has unique characteristics Well received by users. Spray granulation is the aluminum chloride is dried while atomized into tiny particles, whichSeed formulations have good application performance. Polyaluminum chloride is a water-soluble substance, has good thermal stability and high solubility, in the drying process, the 40% -50% solid content of the polyaluminum chloride solution is introduced into the high-pressure pump, pressurized After entering the dryer atomizer, dispersed into tiny droplets, the droplets are dried to obtain a granular product, so that the drying and granulation at the same time completed. Features 1) A large number of positively charged, stable multi-core aluminum complex, can effectively promote flocculation, sizing. 2) The appearance of white, very low iron content, to meet the needs of manufacturing high-quality paper. 3) Polyaluminum chloride is a prehydrolyzate of aluminum chloride with a relatively low degree of hydrolysis and a smaller decrease in pulp pH than aluminum sulfate. 4) The use of aluminum chloride sizing, retention of the slurry, filter aid significantly improved. 5) In addition to the performance of the paper rupture length, the other indicators are improved to varying degrees.