[Name] Polyaluminium Chloride, PAC or polyaluminium

[Technical standard] Product quality meets the national standard GB15892-2020

Polyaluminum chloride is a water-soluble inorganic polymer made by hydrolytic polymerization of aluminium salts (such as aluminium trichloride, aluminium sulphate, alum, etc.) under certain conditions, with the chemical formula [Al₂(OH)ₙCl₆₋ₙ]. ₘ.

Appearance and Properties

The solid presents as yellow, light yellow, brown, white and other colours of powder, granule;

The aqueous solution shows different degrees of turbidity or transparency.

Coagulation performance

a. Strong electric neutralisation of colloidal substances in water.

b, hydrolysis products on the water suspended in the excellent bridging adsorption effect.

c, selective adsorption of dissolved substances.

d, mainly through the compression of the double layer, adsorption of electric neutralisation, adsorption bridging, sediment net trapping and other mechanisms, so that the edema fine suspended particles and colloidal ions destabilisation, aggregation, flocculation, coagulation, precipitation, to achieve purification and treatment effects.

Product Feature

1. Good water purification effect: PAC forms large flocs, fast settling speed, which can significantly improve the water clarity and remove suspended matter, organic matter, heavy metal ions in water.

2. Strong adaptability: the adaptability of polymeric aluminium chloride has a wide range of pH value, strong adaptability to the raw water, and can deal with various types of water quality.

3. Less dosage: compared with other coagulants, the dosage of polymeric aluminium chloride is less, which can reduce the cost.

4. Small corrosiveness: the corrosiveness of polymeric aluminium chloride is relatively small, and the influence on equipment and pipeline is small.

5. Easy to operate and manage: the solubility of polymeric aluminium chloride is good, it is easy to mix well with water, and it will not produce harmful gases and substances in the process of using, the operation and management is relatively simple.

Production Process

（1）Spray drying method: Liquid raw material-press filtration-spray drying tower drying-powder finished product;

（2）Drum drying method: Liquid raw material - press filtration - drum dryer drying - granule finished product.

Use Field  Drinking water, industrial water and sewage treatment field

1.Drinking water treatment: It can effectively remove suspended solids, organic matter, some heavy metal ions in raw water, etc., to ensure the clarity and safety of drinking water, and is one of the commonly used water purification materials in waterworks.

2. Industrial wastewater treatment: widely used in printing and dyeing, papermaking, electroplating, chemical industry, food processing and other industries in the wastewater treatment, through flocculation to remove pigment, grease, heavy metals and other pollutants in the wastewater, so as to meet the discharge standards or to facilitate the subsequent depth of treatment.

3. Sewage treatment: for urban sewage, polymeric aluminium chloride can quickly reduce the turbidity of sewage, remove the colloidal impurities, etc., with the subsequent biochemical treatment process, to enhance the efficiency and effectiveness of the entire sewage treatment.

4. Industrial field: it can be used as a sizing precipitant in paper industry to help paper improve water resistance; it can be used as a binder in precision casting to improve the strength and precision of casting; it can be used in oil extraction field for the treatment of oilfield reinjection water to prevent clogging of strata and other problems.

Precautions

1. Configuration concentration: polymeric aluminium chloride solution is best used now, how much to configure how much to use. Configuration concentration is generally 1% 5%, i.e. 1050kg per cubic metre of water to be dissolved.

2. Adding amount: according to the actual water quality and water samples of the test results to determine the best amount to add. When the turbidity of raw water is 100500mg/L, the dosage is 1020kg per thousand tonnes of sewage.

3. Dissolving requirements: polymeric aluminium chloride must be dissolved with water, not with sewage or oily wastewater for dissolution.

4. Operation observation: pay attention to the observation and adjustment in the operation, such as the precipitation pool alum less, turbidity is large, the dosage is too small; such as the precipitation pool alum is large and upturned, turbidity is high, then the dosage is too large, it should be adjusted appropriately.