电解法去除土壤中铬污染试验初报

摘要

By unreasonable emissions of pollution water in its chrome ore tailings ,exceeded phenomenon of chromium metal in the downstream water & soil is more serious .Experiments of electroremediation of chromium were con-duced .Result shows that :using the phosphate buffer solution as the electrolyte ,both ends of the chromium-con-taminated soil are added low voltage DC electric field ;the chromium contaminated soil in the mesons of the electro-lyte phosphate buffer were generated ionic migration ,namely trivalent or hexavalent chromium move to the electrode direction ,so that the state of chromium ions in the soil is enriched at the cathode side ;the chromium metal in the soil are effectively removed .%受铬矿尾矿库污水不合理排放的影响，铬金属在下游水源和土壤中超标现象较为严重。为治理铬污染，开展了电解法去除土壤中铬污染试验，结果表明：采用磷酸盐缓冲液作为电解质，在铬污染土壤两端加上低压直流电场，使铬污染土壤在电解液磷酸盐缓冲液介子中以离子态产生迁移，即以三价或六价铬向电极方向移动，从而使土壤中的离子态铬在阴极端得到富集，土壤中的金属铬得到有效去除。