Advantages of polyaluminium chloride in industrial wastewater treatment
2021-12-06
Polyaluminium chloride is widely used in various fields of wastewater treatment, especially industrial wastewater treatment. Industrial wastewater is produced in large quantity and polluted seriously. It can only be discharged after treatment to reach the corresponding discharge standard. Polyaluminium chloride can be used to treat various industrial wastewater to protect the environment.
So what kind of sewage is suitable for polyaluminium chloride? Polyaluminium chloride can be widely used to treat industrial wastewater in industrial production, such as metallurgical wastewater, paper wastewater, printing and dyeing wastewater, electroplating wastewater, chemical wastewater, etc.. It can also treat wastewater with high content of heavy metals, such as iron and lead. Polyaluminium chloride also has strong effect of oil removal, decolorization and cod.
In industrial wastewater treatment, polyaluminium chloride is generally produced by roller method, and the content of polymeric aluminum chloride is between 26% and 30%. This kind of polyaluminium chloride not only has good treatment effect on industrial wastewater, but also is relatively cheap. It can be used in large quantities to save costs. Polyaluminium chloride is effective in treating industrial wastewater and is easy to use. Polyaluminium chloride is less corrosive and less corrosive to pipes and equipment. The industrial wastewater treated by polyaluminum chloride is more likely to meet the corresponding discharge standards.
Coagulants for wastewater treatment are widely used in the wastewater treatment industry, and the common ones are polyaluminum chloride and polyacrylamide. Especially, the products such as polymeric aluminum chloride and polyacrylamide have a significant impact on the square speed of flocculation and sedimentation of sewage, and are widely used in the fields of daily life sewage, chemical wastewater and industrial sewage treatment.
Polyaluminium chloride is the main raw material for oil extraction wastewater treatment; polyacrylamide is a multifunctional oilfield chemical treatment agent. It is used as oil repellant, water plugging regulator, drilling fluid regulator and fracturing fluid additive in oil extraction. Soil crust exists in the surface layer of soil and has the characteristics of high density, small pore space and low saturation hydraulic conductivity. It hinders soil water infiltration, increases surface runoff and prevents seed germination. Polyacrylamide can increase soil water content, restrain crust formation and increase water infiltration.
Alkaline aluminum chloride has a significant effect on flocculation and sedimentation of daily chemical production wastewater; in addition, white polyaluminium chloride is a product of water purification flocculant. It belongs to polymeric aluminum chloride. It can also be used as raw material or additive in pharmaceutical, cosmetic and beauty industry.
How does the color of polyaluminium chloride turn red
1. The red color of polyaluminium chloride may be caused by the iron ions in the product, so it will appear red. Generally speaking, its quality is mainly judged by the content of alumina. The higher the content of alumina, the better the effect of polymeric aluminum chloride.
2. However, polyaluminium chloride also contains iron ions and magnesium ions, which will also affect the effect of using polymeric aluminum chloride. Practice has proved that the high iron content is beneficial to the flocculation and precipitation of polymeric aluminum chloride. And for water treatment, it also plays a huge role in the timely treatment of sewage.
Although the color of polymeric aluminum chloride changes to red, the quality and effect remain the same. Therefore, the application effect cannot be judged by the naked eye, but by the results after actual operation. The red color also indicates that it contains more iron ions, and these products also play a strong role in the water treatment effect.
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