Polymeric aluminum chloride is an important inorganic polymer coagulant, and its functions and uses mainly include the following aspects:

1. The main functions of polymeric aluminum chloride are as follows:
1. Water purification function
Polymeric aluminum chloride hydrolyzes in water to form aluminum hydroxide colloid, which carries a positive charge. Most suspended particles in wastewater carry a negative charge, and these positively charged colloids can neutralize the negatively charged suspended particles, causing them to lose stability.
This further leads to the adsorption bridging effect, aggregating small suspended particles into larger flocs, connecting them like small particles, making it easier for them to settle or be filtered out of the water, effectively reducing water turbidity and purifying water quality. This water purification function is widely used in the purification process of drinking water and industrial water.
2. Color removal function
Polymeric aluminum chloride can adsorb colored substances in water, such as dyes and other organic pigments in dyeing wastewater, by adsorbing pigment molecules onto the surface of aluminum hydroxide colloid, thereby reducing the color in water and achieving a decolorization effect.
 3. Removal of organic matter and heavy metals
Polymeric aluminum chloride can adsorb some organic pollutants in water, such as humic substances and other natural organic matter, reducing the chemical oxygen demand (COD) in water and lowering the organic matter content. It also has a certain removal effect on some heavy metal ions (such as mercury, lead, cadmium, etc.) in water, precipitating heavy metal ions along with the flocs through the coagulation and sedimentation process, thereby reducing the content of heavy metals in water.

29% content polymeric aluminum chloride

2. The main uses of polymeric aluminum chloride are as follows:

1. Water treatment field
Drinking water treatment: As a coagulant and filter aid, polymeric aluminum chloride can effectively remove suspended solids, organic matter, heavy metals, and other pollutants from water, ensuring the health and hygiene of drinking water.
Industrial water treatment: Polymeric aluminum chloride can be used for scale prevention and turbidity removal in circulating cooling water of power plants, as well as pretreatment in the preparation of ultra-pure water in the electronics industry.
Wastewater treatment: Polymeric aluminum chloride can reduce the turbidity of urban sewage and industrial wastewater, promote sludge settlement, and remove pollutants such as chemical oxygen demand and biological oxygen demand. In the treatment of industrial wastewater from dyeing, leather, and papermaking, it can improve the biodegradability of wastewater and remove color and pollutants.
 2. Industrial production field
Papermaking industry: Polymeric aluminum chloride is used as a sizing agent and retention aid to improve the strength and whiteness of paper, while also saving the amount of glue and aluminum salts, overcoming some disadvantages of using synthetic adhesives for neutral sizing.
Mining industry: Polymeric aluminum chloride is used for solid-liquid separation, improving mineral processing efficiency and metal recovery rates.
Oil extraction industry: As a primary material for wastewater treatment, it removes suspended solids from drilling mud and crude oil.
Food processing industry: As a clarifying agent, it removes turbidity during the production of juices, beverages, etc., improving product quality.

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3. Other fields
Environmental protection: In solid waste treatment, polymeric aluminum chloride can combine with heavy metal ions in waste to form insoluble precipitates, reducing the toxicity and harm of heavy metals; in air pollution prevention, polymeric aluminum chloride can be used to purify pollutants in the atmosphere, such as particulate matter and sulfur dioxide.
Agricultural irrigation: Purifying irrigation water to remove impurities and pollutants, preventing damage to soil and crops.

Drinking water grade spray polymeric aluminum chloride 2020 standard