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How can we assess the quality of polyaluminum chloride based on its indicators?
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2021-11-25
In today’s era of rapid scientific and technological advancement, the state has set specific performance criteria for the testing of every product. During the examination of certain substances, there are corresponding standard criteria for judgment. I’m sure everyone understands how much effort goes into defining these indices. Polyaluminum chloride also has its own set of acceptance criteria during sampling inspections.
In today’s era of rapid scientific and technological advancement, the state has set specific performance criteria for the testing of every product. During the examination of certain substances, there are corresponding standard criteria for judgment. I’m sure everyone understands how much effort goes into defining these indices. Polyaluminum chloride also has its own set of acceptance criteria during sampling inspections.
It is extremely important to ensure the reliability of polyaluminum chloride quality. Today, we will introduce several key indicators of polyaluminum chloride PAC chemical reagent:
1. Alkalinity: The alkalinity of polyaluminum chloride is a relatively important parameter among polyaluminum products, especially for polyaluminum products intended for drinking water applications. This standard serves as one of the key indicators for controlling production on polyaluminum manufacturing lines. The lower the alkalinity, the higher the price. All purchasers may adjust their operations based on the actual conditions at the factory. Moreover, the alkalinity of polyaluminum chloride products produced and processed using different raw materials and processes also varies, requiring manufacturers to make appropriate adjustments. Increasing the alkalinity of polyaluminum chloride products can significantly enhance both production and usage economic benefits. By raising the alkalinity from 65% to 92%, raw material costs can be reduced by 20%, and usage costs can be cut by 40%.
2. Water-insoluble matter: The presence of water-insoluble matter will affect the overall performance of polyaluminum chloride. In general, its percentage should not exceed 0.1%. Otherwise, the natural sedimentation method will fail to achieve satisfactory treatment results. The data are as follows.
3. Aluminum oxide: As an important raw material for the production of polyaluminum chloride, its compositional content largely determines the purification efficiency of the polyaluminum chloride reagent. Its presence primarily enables both coagulation and flocculation effects—effects that cannot be achieved by other drying methods.
Polyaluminum chloride can treat various types of domestic and industrial wastewater and boasts excellent treatment performance. It is essential to select the appropriate dosage based on the actual volume of wastewater to be treated. Users need to understand how to properly use polyaluminum chloride products and how to choose the right type of polyaluminum chloride.
When using polyaluminum chloride, it is necessary to conduct new small-scale tests and, based on the results of these tests, determine the appropriate application method and dosage of the polyaluminum chloride. Place the polyaluminum chloride into a dosing tank. During actual production, when adding polyaluminum chloride, first add five parts of tap water to completely dissolve it, then dilute the solution with additional water. The concentration of the polyaluminum chloride solution typically ranges around 5%. When dissolving polyaluminum chloride, do not use metal dosing tanks made of materials such as iron, as this could cause the polyaluminum chloride product to degrade.
The three primary indicators of polyaluminum chloride are aluminum oxide content, basicity, and water-insoluble matter. The effective water-purifying component of polyaluminum chloride is aluminum oxide. The higher the polyaluminum chloride content, the better the purification effect—and the higher the price. The higher the aluminum oxide content in polyaluminum chloride, the fewer impurities it contains and the lower its water-insoluble matter content; this is precisely why polyaluminum chloride with higher content is more highly valued.
The alkalinity of polyaluminum chloride is an important indicator and controllable factor in its production. Since the alkalinity of polyaluminum chloride also affects its flocculation performance, most professional polyaluminum chloride manufacturers can produce products with high alkalinity according to customer requirements.
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