| 摘要 |
2055480 9013518 PCTABS00002 A process for the purification of acid aqueous effluents contaminated with organic materials thereby a) bringing the aqueous effluent in contact with an iron-containing material in the form of pieces or a powder, wherein the iron at least partially is present in a metallic state; b) subjecting said material to mechanic processing in contact with the aqueous effluent while dissolving at least part of the metallic iron; c) increasing the pH of the aqueous effluent after said mechanical processing to an essentially neutral pH; d) causing precipitation of three-valent iron under oxidizing conditions; and e) separating the precipitate from d) the aqueous phase.
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