Polyaluminum chloride is an inorganic polymer coagulant, also referred to as polyaluminum chloride or polyaluminum, and the English abbreviation is PAC. It is produced due to the bridging effect of hydroxide ions and the polymerization of polyvalent anions. Inorganic polymer water treatment agent with larger molecular weight and higher electric charge. In terms of form, it can be divided into solid and liquid, and solid is divided into tan, yellow and white according to different colors. Polyaluminum chloride of different colors also has great differences in application and production technology.
PAC polyaluminum chloride has the advantages of good spray drying stability, wide adaptability to water, fast hydrolysis speed, strong adsorption capacity, large alum formation, fast mass density precipitation, low effluent turbidity, and good dehydration performance. The dosage of spray-dried polyaluminum chloride is reduced, especially in the case of poor water quality, the dosage of spray-dried products can be reduced by half compared with drum-dried polyaluminum chloride, which not only reduces the labor intensity of workers, but also More importantly, it reduces the cost of water production for users. In addition, spray-dried products can ensure safety, reduce water accidents, and are very safe and reliable for residents' drinking water. Using the most advanced production technology at present, it is formed by reaction polymerization with high-efficiency high-quality raw materials. All quality indicators meet or even exceed the requirements of the national standard GB15892-2009. Polyaluminum chloride is processed by spray drying process. Therefore, it can also be called high-efficiency spray drying polyaluminum chloride. Features of polyaluminum chloride: Kaibiyuan brand PAC products have fine powder, uniform particles, and are easily soluble in water. , good flocculation effect, efficient and stable purification, less dosage, low cost and so on. It is suitable for drinking water purification, urban water supply purification and industrial water supply purification.
Poly aluminum chloride (Poly aluminum Chloride) Code name PAC. Usually also called water purifier or coagulant, it is a water-soluble inorganic high molecular polymer between ALCL3 and AL(OH)3, the general chemical formula is [AL2(OH)NCL6-NLm] m represents the degree of polymerization, n represents the degree of neutrality of the PAC product
The color is yellow or light yellow, dark brown, dark gray resinous solid. The product has strong bridging adsorption properties, and during the hydrolysis process, physical and chemical processes such as coagulation, adsorption and precipitation occur. The fundamental difference between polyaluminum chloride and traditional inorganic coagulants is that traditional inorganic coagulants are low molecular crystalline salts, while the structure of polyaluminum chloride is composed of polycarboxylate complexes with variable shapes, and the flocculation and precipitation speed is fast, suitable for Wide PH value range, non-corrosive to pipeline equipment, obvious water purification effect, can effectively remove color SS, COD, BOD and heavy metal ions such as and in water, this product is widely used in drinking water, industrial water and sewage treatment field. The quality of Jiaxin products conforms to the national GB15892-2009 standard.
performance
a. The purified water quality is better than that of aluminum sulfate flocculant, and the cost of purified water is 15-30% lower than that.
b. The formation of flocs is fast, the settling speed is fast, and the processing capacity is larger than that of traditional products such as aluminum sulfate.
c. The alkalinity of the consumed water is lower than that of various inorganic flocculants, so no or less alkaline agent can be added.
d. The suitable source water can be condensed in the range of PH5.0-9.0.
e. Low corrosiveness and good operating conditions.
f. The solubility is better than that of aluminum sulfate.
g. The increase of salt in the treated water is small, which is beneficial to ion exchange treatment and high-purity water production.
h. The adaptability to source water temperature is better than that of inorganic flocculants such as aluminum sulfate.
1. Mix the product (solid) and normal temperature water at the ratio of 1:2.5-1.3 [weight ratio] for about 30 minutes. After
dissolution of the drug, add 30-40 times of clear water for dilution or dilute to liquid according to the required concentration,
and then use [the greater the turbidity of the source water, the more clean water for secondary release].
2. When the turbidity of source water is 100-500mg / L, the dosage is 3-6mg. For specific dosing, a small test shall be conducted according to the water
quality, and the dosing amount shall be selected and then put into use.
| Index name |
index |
| |
First Grade |
| |
Drinking water % |
| alumina (AL2O3) mass fraction/%≥ |
28-30 |
| Basicity/% |
40-90 |
| density (20oC)/(g/cm3) ≥ |
1.12 |
| Mass fraction of water insolubles /% ≤ |
1.0 |
| PH(1% aqueous solution) |
3.5-5.0 |
| (As) mass fraction /% ≤ |
0.005 |
| lead (Pb) mass fraction /% ≤ |
0.001 |
| (Cd) mass fraction /% ≤ |
0.002 |
| (Hg) mass fraction /% ≤ |
0.00001 |
| Six valence chromium(Cr+6) mass fraction /% ≤ |
0.005 |
Poly Features:
1) Spray dry type, lower water insolubles
2) Used for drinking water treatment and wastewater treatment
3) Appearance: Light yellow powder
4) Al2O3: 30% (min. )
5) Basicity: 50.0% ~ 90.0%
6) Insolubles: 1.0% (max. )
7) pH (1% water solution): 3.5 ~ 5.0
8) SO42-: 3.5% (max. )
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