Treatment of Cr -electroplating Wastewater by the Method of Precipitation Floatation

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Treatment of Cr -electroplating Wastewater by the Method of Precipitation Floatation

更新时间：2026-05-27

- Treatment of Cr -electroplating Wastewater by the Method of Precipitation Floatation
- Vol. 16, Issue 4, (1999)
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- Online First：12 November 1999，
  
  Published：1999
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Treatment of Cr -electroplating Wastewater by the Method of Precipitation Floatation[J]. 1999, 16(4).
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Treatment of Cr -electroplating Wastewater by the Method of Precipitation Floatation[J]. 1999, 16(4). DOI：

摘要

研究了用亚硫酸钠和硫酸亚铁两步还原、然后进行沉淀浮选处理电镀废水中的Ｃｒ６＋．试验结果表明，用亚硫酸钠和硫酸亚铁混合还原较单一还原剂还原效果好，在原水含Ｃｒ６＋１．９２ ×１０－３ｍｏｌ／Ｌ的情况下，处理后残余总铬浓度仅为１．３５×１０－５ｍｏｌ／Ｌ，远低于国家的排放标准，且处理时间短、上浮渣少、出水清澈透明．研究了还原剂最佳组合用量，浮选最佳ｐＨ值，捕收剂种类，最佳用量和组合用药对浮选效果的影响．

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