When using
polyaluminium chloride products, many find the dissolution process prior to use genuinely troublesome. There is a desire to directly add the solid product. Is this approach acceptable? Generally speaking, it can be used directly. However, it is important to understand that direct addition of the product will result in larger particles. This will inadvertently increase the cost of wastewater treatment.
Polyaluminium chloride is an inorganic polymeric coagulant. It exhibits rapid sedimentation and excellent flocculation properties. It also possesses a broad pH applicability range and is non-corrosive to pipeline infrastructure. It demonstrates exceptional efficacy in removing suspended solids from water. In practical application, it effectively eliminates various toxic and harmful substances from wastewater while typically requiring minimal dosage. It stands as a highly valuable water treatment chemical.
Why does the direct use of solid polyaluminium chloride without dissolution increase wastewater treatment costs? Primarily because direct addition to wastewater causes rapid encapsulation of suspended solids, leading to flocculation and sedimentation issues. This results in equipment blockages. Moreover, under such conditions, usage quantities inevitably increase. The required dosage becomes two to three times that of the dissolved product. While this may seem more convenient, it ultimately leads to significantly higher operational costs.
How should polyaluminium chloride be correctly used? Dosage should be determined experimentally based on the specific water quality at the site to select the optimal amount for effective treatment. When preparing the solution, ensure it is used immediately after mixing. Do not allow dissolved product to stand for extended periods. When using solid product, first add tap water to prepare a 10%-25% solution, then dilute with water to the required concentration. Crucially, products from different manufacturers or with different specifications must not be mixed, as this can adversely affect the final solution. It is advisable to prepare a 10%-25% concentration solution and then dilute it with water to the required concentration. It is important to note that products from different manufacturers or of different grades should not be mixed, as this may adversely affect the final treatment outcome. Furthermore, to achieve optimal results, the dosage must be determined based on varying water qualities, seasonal conditions, and tank configurations. During dissolution, maintain continuous stirring until complete dissolution is achieved. When adding to the wastewater, incorporate slowly and evenly to prevent clumping caused by uneven contact with the product. This ensures optimal water treatment efficacy.
