Basic Aluminum Chloride (BAC) is a sophisticated inorganic polymer coagulant that has become indispensable in modern water and wastewater treatment processes. Its unique chemical properties and high efficacy make it a preferred choice for industries seeking efficient purification solutions. This article provides a detailed understanding of BAC, its key characteristics, diverse applications, and essential guidance for those looking to purchase it.

Chemically, BAC is an aluminum compound characterized by a polymer structure involving aluminum, oxygen, and chlorine. Typically, it is manufactured through the polymerization of aluminum salts, resulting in a highly cationic species. This cationic nature is fundamental to its function as a coagulant, as it effectively neutralizes the negative charges of impurities suspended in water, leading to flocculation and subsequent removal. The product's appearance is often described as black granulars, indicating its processed form ready for application.

The key specifications that define high-grade BAC include its alumina content, typically ≥28%, and its basicity, which can range from 20-98%. The pH value of a 10g/L aqueous solution usually falls between 3.5-5.0. These parameters ensure its effectiveness in a wide range of water conditions. Its low iron and arsenic content are also crucial indicators of its quality, particularly for potable water applications or when minimizing trace contaminants is essential.

BAC's primary application is as a coagulant in water treatment. It is highly effective in purifying industrial wastewater, municipal sewage, and even process water for industries like papermaking and printing/dyeing. Its ability to efficiently remove pollutants, organic matter, turbidity, heavy metal salts, and radioactive contaminants makes it a versatile solution for environmental protection. The low dosage required for effective treatment, coupled with its high purification efficiency, makes it a cost-effective choice for businesses.

For procurement professionals and R&D scientists, understanding how to buy BAC is important. When looking to purchase, it is advisable to identify reliable manufacturers and suppliers, often found in regions like China, known for their chemical production capabilities. Key factors to consider include product purity, consistency, packaging (commonly 25kg bags), and the supplier's ability to provide technical support and timely delivery. Requesting product samples and comparing quotes from multiple vendors are standard practices to ensure the best value and quality.

The advantages of using BAC are numerous: it offers superior purification efficiency, requires a lower dosage, and contributes to reduced sludge generation compared to some older coagulant technologies. It is also known for its adaptability to different water temperatures and pH levels, making it a robust solution for various operational environments. For those in need of effective water treatment chemicals, Basic Aluminum Chloride represents a modern, efficient, and environmentally sound option.

In conclusion, Basic Aluminum Chloride is a powerful tool in the ongoing effort to ensure clean water. Its advanced chemical properties and proven efficacy in diverse treatment scenarios make it an essential chemical for industries worldwide. By understanding its characteristics and following a diligent procurement process, businesses can effectively leverage BAC for superior water purification results.