Polyaluminum chloride is an inorganic polymer compound composed of calcium aluminate, aluminum chloride, aluminum hydroxide and other substances, which has excellent water purification properties and coagulation effect. In coal washing plants, polyaluminium chloride is widely used in water treatment and slime water treatment.
In the coal washing plant, the water purification performance of polyaluminum chloride is mainly manifested in the following aspects:
1.Suspended solids removal: Polyaluminium chloride can effectively remove suspended solids in water, including sediment, organic matter, heavy metal ions, etc. Through coagulation, polyaluminium chloride can make these suspended solids form larger particles, which are easy to settle and filter.
2.Decolorization and deodorization: Polyaluminum chloride can remove pigments and odors in water and improve water quality. This is mainly because polyaluminum chloride can react with organic matter in water and destroy its structure, so as to achieve the effect of decolorization and deodorization.
3.Phosphorus and fluoride removal: Polyaluminium chloride can remove phosphorus and fluoride ions in water, reducing the risk of eutrophication and fluorosis in water. This is mainly due to the ability of polyaluminium chloride to react with phosphorus and fluoride ions in the water to form a precipitate, which removes it.
In the coal washing plant, the coagulation effect of polyaluminum chloride is mainly manifested in the following aspects:
1.Slime water treatment: Polyaluminum chloride can make the slime particles in the slime water form a large floc, which is convenient for sedimentation and filtration. This can improve the efficiency of slime water treatment and reduce the waste of water resources.
2.Circulating water treatment: Polyaluminum chloride can be used as a circulating water treatment agent to effectively remove impurities and microorganisms in the water and prolong the service life of the circulating water system.
When applying polyaluminium chloride in a coal washing plant, the following points need to be noted:
1.Dosage: Depending on the water quality and quantity, the dosage of polyaluminium chloride will also vary. In practice, adjustments need to be made to ensure the best possible water purification.
2.Dissolution and dilution: Polyaluminium chloride needs to be dissolved and diluted before use to avoid corrosion and clogging of equipment and pipelines. At the same time, the process of dissolution and dilution also requires strict control of factors such as temperature and concentration.
3.Equipment maintenance: In the process of using polyaluminum chloride, the equipment needs to be inspected and maintained regularly to ensure its normal operation and service life.
In a word, the application of polyaluminum chloride in coal washing plants is of great significance. It can not only improve the efficiency and quality of water treatment, but also reduce the waste of resources and environmental pollution. In the future development, the application of polyaluminum chloride will be more extensive and deeper.