High Efficiency Sewage Treatment Chemicals Flocculant Polyaluminum Chloride

• CAS No.: 1327-41-9
• Formula: Aici3
• Color: Yellow
• Appearance: Powder
• Transport Package: 25kg/Bag
• Specification: 25Kg/bag
• Trademark: henghao
• Origin: China
• HS Code: 282732
• Production Capacity: 9999999

Product Description

The main purpose
1. Water treatment agent is mainly used for the purification of drinking water, industrial sewage and urban sewage, such as iron removal,adioactive pollution removal, floating oil removal, etc. Also used for industrial wastewater treatment, such as printing and dyeing wastewater. Also used in precision casting, medicine, paper rubber, leather, petroleum, chemicals, dyes. 2. Polyaluminum chloride is used as a water treatment agent in surface treatment. 3. Cosmetic raw materials.


water purification principle


The structure of the micelle electric double layer determines that the concentration of counter ions is the largest at the surface of the colloidal particles. The larger the distance from the surface of the colloidal particles, the lower the concentration of counter ions, which is finally equal to the ion concentration in the solution. When the electrolyte is added to the solution to increase the ion concentration in the solution, the thickness of the diffusion layer decreases.


When two colloidal particles approach each other, the zeta potential decreases due to the decrease in the thickness of the diffusion layer, so the mutual repulsion force between them decreases, that is, the repulsive force between the colloidal particles with high ion concentration in the solution is smaller than that with low ionic concentration. The suction force between the colloidal particles is not affected by the composition of the water phase, but due to the thinning of diffusion, the distance between them when they collide is reduced, so that the mutual suction force is larger. It can be seen that the resultant force of repulsion and attraction has changed from repulsion-based to suction-based (the repulsive potential energy has disappeared), and the colloidal particles can be rapidly aggregated. This mechanism can better explain the sedimentation phenomenon in the harbour. When the fresh water enters the sea water, the salt increases, the ion concentration increases, and the stability of the colloidal particles carried by the fresh water decreases, so the clay and other colloidal particles are easy to deposit in the harbour.


According to this mechanism, when the added electrolyte in the solution exceeds the critical agglomeration concentration for agglomeration by a large amount, there will be no more excess counter ions entering the diffusion layer, and it is impossible to change the sign of the colloidal particles to re-stabilize the colloidal particles. This mechanism is based on the simple electrostatic phenomenon to explain the effect of electrolyte on the destabilization of colloidal particles, but it does not consider the effect of other properties (such as adsorption) in the destabilization process, so it cannot explain other complex destabilization phenomena, such as trivalent destabilization. If the amount of aluminum salt and iron salt as coagulant is too much, the coagulation effect will decrease, or even re-stabilize; another example, the polymer or polymer organic matter with the same electric number as the colloidal particles may have a good coagulation effect: the isoelectric state should be It has the best coagulation effect, but often in production practice, the coagulation effect is the least when the zeta potential is greater than zero.


In fact, adding a coagulant to an aqueous solution to destabilize the colloidal particles involves the interaction between the colloidal particles and the coagulant, the colloidal particles and the aqueous solution, and the coagulant and the aqueous solution, which is a comprehensive phenomenon.