Fluorine removal agent, preparation method and fluorine removal method for hydrofluoric acid wastewater

• Main Authors: YAO RUIHAN, TORA SHO, ZHANG LIPING, GUO XIANGSHUAI, AN YIYUN, ZHAO XIAOXI
• Format: Patent
• Language: Chinese; English
• Published: 13.05.2022
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention relates to the technical field of hydrofluoric acid wastewater treatment. The invention provides a defluorination agent, a preparation method of the defluorination agent and a method for defluorinating hydrofluoric acid wastewater. The defluorination agent is suitable for treating hydrofluoric acid wastewater. The defluorination agent is composed of an aluminum salt, an iron salt, a magnesium salt, a composite silicate and a modified natural organic high-molecular compound, and the mass percentages of the aluminum salt, the iron salt, the magnesium salt, the composite silicate and the modified natural organic high-molecular compound in the defluorination agent are respectively 40-55%, 30-40%, 5-15%, 2-10% and 2-10%. The defluorination agent comprises a multi-core polyhydroxy inorganic complex mainly containing iron, silicon, aluminum, magnesium and hydroxyl and a multi-core polyhydroxy organic polymer. The defluorination agent provided by the embodiment of the invention comprises the multi-core