Poly aluminium chloride（PAC）- vcycletech

Poly aluminium chloride(PAC)

Molecular Formula [AL2(OH )nCL6-n]m

CAS:1327-41-9

Polymeric aluminum chloride (PAC) Product Briefs

Poly aluminium chloride (PAC)is an inorganic substance, an emerging water purification material, inorganic polymeric coagulant, or polyaluminium for short. It is a water-soluble inorganic polymer between AlCI3 and Al(OH)3, with the chemical formula [Al2(OH)nCl6-n]m, where m represents the degree of polymerization and n indicates the degree of neutrality of the PAC product. n=1~5 is a highly charged polymeric cyclic chain with Keggin structure, highly electrically neutralizing and bridging effect on colloids and particulates in the water. It can Strongly remove micro-toxic substances and heavy metal ions with stable properties. What can test it according to the international GB 15892--2003 standard. Due to the bridging effect of hydroxide ions and the aggregation of multivalent anions, the produced aluminum chloride is an inorganic polymeric water treatment agent with a large relative molecular mass and a high electrical charge.

Poly aluminium chloride(PAC) Product features and application areas

Poly aluminium chloride(PAC), the white or yellow powder, is a new type of high-performance inorganic macromolecule flocculating agent. It is an inorganic polymer synthesized by aluminum chloride, aluminum hydroxide, alumina, or other inorganic aluminum compounds with hydrochloric acid. PAC powder is very soluble in water, so it has a wide application range of PH value, large granule, and quick speed in sedimentation.

Poly aluminum chloride is mainly used in the water treatment industry and has related applications in the pharmaceutical and cosmetic industry.

PAC polyaluminium chloride can be used as a flocculant or coagulant inwater treatmentor water purification, including drinking water, industrial wastewater, urban wastewater, swimming pool, and paper industry. Besides, it can also be used in deodorants and antiperspirants.

PAC Specification:

PAC Physical & chemical properties

Poly aluminium chloride has the properties of adsorption, coagulation, and precipitation. Its stability is poor and corrosive. If accidentally splashed on the skin, it should be cleaned with water immediately. Production personnel must wear overalls, masks, gloves, and long boots. Polymeric aluminum chloride has the advantages of good stability of spray drying, wide adaptability to water, fast water solution, strong adsorption capacity, large alum flower, fast quality and dense precipitation, low turbidity of the affluent, good dewatering performance. The use of spray-dried products to ensure safety and reduce water accidents for drinking water residents is very safe and reliable. Therefore, polymeric aluminum chloride is referred to as high-efficiency poly aluminum chloride, high-efficiency PAC, or high-efficiency spray-dried poly aluminum chloride. Polymeric aluminum chloride is suitable for raw water with various turbidities. Although the pH range is wide, its settling effect is much less than that of polyacrylamide.

The salt base ofpolyaluminum chlorideis a relatively important indicator in polymeric aluminum, especially for drinking levels of polymeric aluminum products. The lower the salt base, the higher its price. Each purchaser can operate according to the actual situation of the manufacturer. Besides, depending on the raw material, the salinity of the poly aluminum chloride products produced and treated varies and needs to be adjusted by the manufacturer. Increasing the salinity of poly aluminum chloride products can significantly improve the economic efficiency of production and use. Increasing the salinity from 65% to 92% reduces the cost of raw materials for production by 20% and the cost of service by 40%.

Types of colours in PAC | pac poly aluminium chloride

The colors of poly aluminium chloride are generally white, yellow, and brown, and the different shades of poly aluminium chloride vary significantly in their application and production process. Polyaluminium chloride with an aluminium trioxide content within the national standard range of 27% to 30% is mainly in a solid powder of earthy yellow, yellow, and light yellow. These polymeric aluminum chloride types have better water solubility, and the dissolution process is accompanied by physicochemical changes such as electrochemistry, coagulation, adsorption, and precipitation. The flocs are formed quickly, coarsely, with high activity, fast rain, and obvious purification effects on high turbidity water.

White poly aluminum chloride is known as high purity iron-free white poly aluminum chloride or food grade white poly aluminium chloride, which is the highest quality product than other poly aluminium chlorides. The primary raw materials are high-quality aluminium hydroxide powder, hydrochloric acid, and the production technology used is the most advanced technology spray drying method in China. White poly aluminium chloride is used in paper glue, sugar decolorization and clarification agents, tannins, pharmaceuticals, cosmetics, precision casting, and water treatment.

The raw materials of yellow polyaluminium chloride are calcium aluminate powder, hydrochloric acid, and alum, mainly used for sewage treatment and drinking water treatment. The raw materials for drinking water treatment are aluminium hydroxide powder, hydrochloric acid, and a bit of calcium aluminate powder. The technology used is plate and frame filtration technology and spray drying technology. For drinking water treatment, the state has strict requirements for heavy metals, so the raw materials and production technology are superior to brown poly aluminium chloride. Yellow poly aluminium chloride is generally produced by drum drying or spray tower drying and is available in two solid forms: flake and powder.

The raw materials for brown polyaluminium chloride are calcium aluminate powder, hydrochloric acid, alum, and iron powder. The production process is by drum drying method, generally mainly used in sewage treatment, because of the addition of iron powder inside, so the color is brown, the more iron powder added, the darker the color, iron powder over a certain amount, also called polyaluminium chloride iron, in sewage treatment has a perfect effect.

Role of the pac

The flocculation effect of poly aluminium chloride is as follows
a. Strong electrical neutralisation of colloidal substances in water.
b. Excellent bridging and adsorption of suspended substances in water by hydrolysates.
c. Selective adsorption of dissolved substances.
Polyaluminium chloride is an inorganic polymer coagulant, the bridging effect of hydroxide ions and the aggregation of multivalent anions produce a large molecular weight, high charge inorganic polymer water treatment chemicals) characteristics are mainly determined by the working principle of the pressure type atomiser.

Performance of the pac

a. The purified water quality is better than aluminium sulphate coagulant and the cost of water purification is lower than 15-30%.
b. Fast floc formation, fast settling speed, larger treatment capacity than traditional products such as aluminium sulphate.
c. consumption of water alkalinity is lower than various inorganic flocculants, so no alkali agent is invested or put in.
d. Adapted source water PH5.0-9.0 range can be coagulated.
e. Low corrosiveness and good operating conditions.
f. Solubility is better than aluminium sulphate.
g. Less increase of salt in treated water, which is conducive to ion exchange treatment and high purity water production.
h. Better adaptability to source water temperature than aluminium sulphate and other inorganic flocculants.

PAC Package and Storage:

Inner liner plastic bag, outer plastic woven bag, 25kg/bag. 

Stored in a cool, dry place to prevent the sun and rain. Storage for 10 months.

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