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METHOD OF DETOXICATION OF INDUSTRIAL WASTES CONTAINING COMPLEX SALTS OF HEAVY METALS
METHOD OF DETOXICATION OF INDUSTRIAL WASTES CONTAINING COMPLEX SALTS OF HEAVY METALS
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机译:含重金属复杂盐的工业废水的解毒方法
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摘要
A process for the detoxication of waste slurries, in particular from the leather and skin industry, containing heavy metal salt complexes and organic materials comprises treating a suspension containing at most 100 kg/m3 of solid material with sulphuric acid and/or a mineral acid mixture composed of at least 30% by weight of sulphuric acid. The acid liquid containing the heavy metal salts is separated from the slurry, and the solution is neutralized; the metal salts are precipitated, purified and the organic slurry is washed to make it metal ion- and acid-free.
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机译:一种用于废浆脱毒的方法,特别是来自皮革和皮肤工业的,含有重金属盐络合物和有机材料的废浆的脱毒方法,包括用硫酸和/或硫酸处理含有至多100 kg / m 3固体材料的悬浮液。无机酸混合物至少包含30%(重量)的硫酸。从浆液中分离出含有重金属盐的酸性液体,并将溶液中和。沉淀,纯化金属盐,并洗涤有机浆料,使其不含金属离子和酸。
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