Defluorination material based on mushroom dregs and regeneration method of defluorination material

• Main Authors: ZHOU XIANGYANG, ZHOU XIANGQING, ZHOU JINHUI, GE JINYUE, WANG HUI
• Format: Patent
• Language: Chinese; English
• Published: 14.12.2018
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a defluorination material based on mushroom dregs and a regeneration method of the defluorination material. An optimized preparation method of the defluorination material comprises the following steps: drying and grinding the mushroom dregs; preparing slurry containing the ground mushroom dreg powder and soluble rare earth salt; adding inorganic base and performing evaporation to dryness; performing high-temperature calcination, water washing and drying. The regeneration method comprises steps of rinsing a defluorinated material in dilute acid and performing hydrothermal treatment on defluorination residues obtained after rinsing in a solution prepared from alkali carbonate and inorganic base. Fluorine in general industrial wastewater can be removed efficiently by the provided composited defluorination material, the removal effect on fluorine in a zinc sulfate electrolyte in zinc hydrometallurgy is particularly obvious, and the defluorination material has the characteristics of being h