The diversification of
polyaluminium chloride products has resulted in considerable variation within the current market offerings. Compounded by differences in production processes and raw material selection among manufacturers, the resulting products exhibit significant colour variations. Presently, these range from white, pale yellow, golden yellow, brown, to dark brown.
What distinguishes these differently coloured polyaluminium chloride products? Let us first examine the white variety. White polyaluminium chloride represents a relatively novel water purification agent, specifically designed for applications in food processing, potable water treatment, and precision manufacturing sectors. Given its direct relevance to daily life and health, it commands higher purity standards and a correspondingly elevated price point. Next comes the pale yellow product. Pale yellow products rank second in quality to the white variety. They are primarily employed in drinking water treatment. Given stringent restrictions on heavy metals, particularly for potable-grade products requiring sediment-free outcomes, the fine powder, uniform particle size, and excellent flocculation properties of pale yellow products make them well-suited. Next are the golden yellow products. Golden yellow products are currently the most widely used on the market. They are chiefly applied in wastewater treatment, offering superior flocculation performance. They prove effective in industrial water treatment, industrial effluent management, and municipal sewage purification. Lastly, brown and dark brown products contain higher iron concentrations. These are employed in sectors with specialised water treatment requirements.
Given the diverse colour spectrum of polyaluminium chloride products, how should one select the appropriate formulation for use? When choosing, consider the aluminium oxide content. Generally, higher aluminium oxide content correlates with greater density. Many users mistakenly assume that higher content equates to superior performance. This is not necessarily the case. The optimal product concentration should be selected based on the specific characteristics of the water being treated. Base degree is another critical factor to consider during application. Alkalinity, also termed basicity, can be adjusted between 40% and 95%. Custom production according to user requirements is also feasible. However, during manufacturing, lower alkalinity necessitates increased raw material input, whereas higher alkalinity significantly reduces costs. For users, higher alkalinity is not necessarily preferable. The operational environment is crucial for optimal product performance. Finally, pH value is important. An appropriate pH range enables the product to achieve its best performance.
