铁氧体法处理含铬废水及铬回收实验研究  

Treatment of Wastewater Containing Chromium and Recycling Chromium by Ferrite Process

作　　者：李燕灵[1] 王海峰[1] 

机构地区：[1]贵州大学材料与冶金学院,贵州贵阳550025

出　　处：《广州化工》2013年第14期101-103,共3页GuangZhou Chemical Industry

摘　　要：通过实验研究了铁氧体法处理含Cr6+废水和回收铬的工艺条件,包括Fe2+/Cr2O27-(摩尔比)、反应pH值、温度、酸化pH值。得出实验的最佳工艺条件为:酸化pH为3.0、Fe2+/Cr2O27-(摩尔比)为12∶1、反应pH值为9、温度为70℃。在此工艺条件下,处理后废水中Cr6+的浓度可达到国家环保排放标准(GB8978-1996),且回收率相对较高,最高可达67.21%。The treatment and recycling conditions of wastewater containing chromium with ferrite were studied, inclu- ding FeE＋/Cr=O27- （molar ratio）, reaction pH, temperature, and acidification of the pH. The best experimental condi- tions were acidification pH at 3.0, molar ratio of Fe2＋ and Cr2072-of 12 ： 1, reaction pH 9, and temperature 70 ℃. Under the conditions, the wastewater after the treatment of Cr6＋ concentration met the emission standards of GB8978 - 1996, and the recycling rate was relatively high. The highest recycling rate was 67.21%.

关 键 词：铁氧体法 含铬废水 PH 去除率 

分 类 号：X52[环境科学与工程—环境工程]