Polyaluminum chloride has remarkable application effect in industry, is widely adaptable to water, easily and quickly forms large flakes, has good precipitation performance, and has a wide range of suitable pH value (5-9), and the pH value and alkalinity of treated water It is an inorganic polymer flocculant. The color of Lushuijie industrial grade PAC is reddish-brown, and its molecule is [Al2(OH)nCL6-n]m, n≤5m≤10. Different hydroxyl groups, when polyaluminum chloride is added to the turbid source water, continue to be hydrolyzed under the PH condition of the source water. During the hydrolysis process, physical and chemical processes such as coagulation, adsorption and precipitation occur, so as to achieve the purpose of purification.
Industrial grade polyaluminum chloride is cheap, has a wide range of applications, and can maintain a stable precipitation effect when the water temperature is low. Polyaluminum chloride is an inorganic polymer flocculant. Through the action of hydroxyl ion functional groups and polyvalent anion polymerization functional groups, macromolecules are produced, which can be used in industrial water treatment and industrial circulating water treatment, recycling of coal mine scouring wastewater and porcelain industrial wastewater, and can also be used in printing. Factories, printing and dyeing plants, tanneries, breweries, meat processing plants, pharmaceutical plants, paper mills, coal washing, metallurgy, mining areas, and the treatment of wastewater containing fluorine, oil, and heavy metals.
Industrial-grade polyaluminum chloride effect rods are widely used, and the specific applications are summarized as follows:
1. In mining and coal preparation industry, it can be used as a clarifier for mine waste and coal washing wastewater.
2. In the papermaking industry, paper can be used as a dry strength agent, a preservative, and a filter aid, which can greatly improve the quality of paper, save costs, and improve paper production capacity. It has a direct electrostatic bridge function with inorganic salt ions, fibers and other organic polymers to improve the physical strength of the paper, and can play an important flocculation role in the deinking process.
3. As a flocculant, it is mainly used in industrial solid-liquid separation process, including precipitation, clarification, concentration and sludge dewatering and other processes, applications, the main industries are: urban sewage treatment, paper industry, food processing industry, petrochemical industry, metallurgical industry , mining, dyeing and sugar industry and various industrial wastewater treatment. Used in the dewatering process of sludge precipitated in municipal sewage and meat, poultry, food processing wastewater treatment sludge.
4. The formation of fiber slurry (asbestos-cement products) The drainage system of asbestos-cement products has been improved, so that the strength of the billet increases asbestos, and the bonding ability and fiber additives can be improved in the insulating board.
5. Purify in phosphoric acid to help the separation process of wet phosphogypsum.
6. It can be used for the treatment of printing and dyeing wastewater, leather wastewater, oily wastewater, turbidity and bleaching to meet the discharge standards.
7. As a flocculant for water treatment in waterworks, it is effective and low in cost, especially when used in combination with inorganic coagulants.
It should be noted that the preparation and storage of aqueous solutions of industrial-grade polyaluminum chloride PAC should be carried out in enamel, galvanized, or plastic buckets, and should not be in contact with iron products. It must be stored in a dry, moisture-proof and heat-proof place. Contaminated by toxic substances and heat and moisture, do not damage the packaging.
When dissolving, the industrial-grade polyaluminum chloride product should be added evenly and slowly into the dissolver with stirring and heating measures. Large agglomerates and long-term severe mechanical shearing should be avoided. 1:3 After adding water to dissolve into liquid, add 8-10 times of clear water to dilute it to the required concentration before use. The dosage can be determined according to the different turbidity of the raw water, and the ideal dosage can be determined. The effect of dripping this product at the sewage discharge port is more significant. .
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