PAC (Polyaluminium Chloride) referred to as the PAC. Usually referred to basic aluminum chloride or coagulant, it is between ALCL3 and AL (OH) 3 between a water-soluble inorganic polymers, chemical formula is [AL2 (OH) NCL6-NLm] where m represents the degree of polymerization, n represents a neutral level of PAC products. color yellow or pale yellow, dark brown, dark gray resin-like solid. The product has a strong bridge adsorption properties, in the hydrolysis process, accompanied by condensation, adsorption and precipitation and other physical and chemical processes occur.
The fundamental difference between PAC and the traditional inorganic coagulant is the traditional inorganic coagulant for the low molecular weight crystalline salt, and PAC's structure consists of a complex form of changing the composition of pluralistic carboxyl, flocculation and sedimentation speed, applicable PH value range, non-corrosive to plumbing, water purification effect is obvious, can effectively support in addition to the water color quality SS, COD, BOD and arsenic, mercury and other heavy metals, which are widely used for drinking water, industrial water and wastewater treatment field.
Basic aluminum chloride as a new coagulant has the following advantages:
Basic aluminum chloride has in dealing with the paper, printing and dyeing wastewater unique performance. Floc formation rapid sedimentation rate is high, and therefore the reaction time can be shortened precipitation, increase in the production capacity of 1.5-3 times the corresponding conditions. Dosage waiting Under the basic aluminum chloride coagulation water hardness is less than consumption during various inorganic coagulant, treated water PH value decreased less. Thus when the treated water, especially when dealing with high concentrations of water, do not add less plus basic aid There coagulant agents and its decolorizing ability superior to other inorganic purifying agent.
1, the solid product 1: 3 after dissolved in water as a liquid, plus 10-30 times diluted with water to the desired concentration.
2, according to the different amount of raw water turbidity, determination of optimal dosage, general raw water turbidity in the 100-500mg / L, each kiloton dosage 10-20kg.
Packaging and storage:
1, lined with plastic bag, outer layer of plastic film woven bag weighs 25kg.
2, stored in a cool, dry place to prevent the sun and rain.
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