Innocent treatment of cyanide and fluoride in solid waste residues and recycling process thereof
A technology of harmless treatment and solid waste, which is applied in the direction of protective devices against harmful chemicals, etc., can solve problems such as farmland occupation and hidden dangers of the ecological environment, and achieve the effect of saving land use, simple equipment, and eliminating sources and hidden dangers
Active Publication Date: 2009-06-03
浙江钰滔环保科技有限公司
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The invention relates to innocent treatment of cyanide and fluoride in solid waste residues and a recycling process thereof. The method of innocent treatment and recycling of cyanide and fluoride contained in electrolysis bath overhaul residues or solid at a normal temperature is characterized in that a water ball mill with a weight ratio of 1:1 is added into and mixed with the electrolysis bath overhaul residues containing cyanide and fluoride, calcium or magnesium or sodium compound that can produce hypochlorous acid by being dissolved in water, and water-soluble calcium or magnesium or aluminum salt to prepare pulp, thereby enabling cyanide to be dissolved and reduced in the liquid phase of ball mill pulping; meanwhile, calcium ions, magnesium ions and aluminum ions released by water-soluble calcium or magnesium or aluminum salt and fluoride ions in the liquid phase form water-insoluble calcium fluoride, magnesium fluoride and aluminum fluoride which are harmless sediments; and neutral water is separated from slurry by the solid-liquid separation, so that the purpose of decontamination and no discharging can be achieved.
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