硫酸亚铁对铬渣滤液中Cr^(6+)的处理研究

Study of Ferrous Sulfate on the Cr^(6+) Ion Disposing in the Filtrate of Chromium Residue

铬渣废水中由于Cr6+浓度高,对环境以及人的健康存在潜在危害,因此有必要进行研究处理。笔者通过单因子试验研究硫酸亚铁投药量、pH、搅拌速度、搅拌时间和反应时间5种参数对含铬废水处理的影响。研究结果表明,5种影响因素中对含铬废水处理效果最明显的是投药量,试验条件下的各单因子的最佳条件分别为:投药比为80;pH为7~8;反应时间为20min;搅拌速度为快速搅拌;搅拌时间为10min。

Because of the Cr6＋ ion having the potential of endangering the environment and harming the health of people in the filtrate of chromium residue, so it is necessary to treat it. Based on the study of single factor experiment, ferrous sulfate drug ratio, pH, stir speed and reaction time were studied on the effect of chromium-containing waste water treatment. The results showed that ferrous sulfate drug ratio was the most obvious influential factor among the all five influencing factors. Through the process of single factor law of process conditions, the author analyzed and the experimental conditions for optimum technological conditions for strategy was： more than 80, pH for 7-8, the reaction time for 20 min, stirring speed for fast mixing, stirring time for 10 min, the results of the experiments of chromium-containing waste water treatment provided theoretical basis.