论文部分内容阅读
选用铁碳微电解处理水源中的Cr(Ⅵ),研究其对Cr(Ⅵ)的去除效果和各种因素的影响。结果表明,在不调p H的条件下(原水p H=5.8~6.4),反应时间为40 min,六价铬为1 mg/L,Fe/C=7/3,总量为14 g的铁碳,重复处理100m L的铬液可以利用6~8次,水样经该条件处理后去除率达95%以上,效果良好。在此基础上进行动态连续实验,流量为8m L/min,铬液为1 mg/L,不调节p H情况下,蒸馏水配铬液的可以运行60 d,出水浓度为0.007~0.012 mg/L,处理率都达95%以上,出水达到《生活饮用水卫生标准》(GB 5749-2006)中六价铬的要求0.05 mg/L,总铁的要求0.3 mg/L。该技术在实验室实验的基础上,取得了较好的处理效果,对于研究水源水处理新技术有参考价值。
Iron (II) carbon microelectrolysis was used to treat Cr (Ⅵ) in water, and the effect of Cr (Ⅵ) removal and various factors on Cr (Ⅵ) removal was studied. The results showed that the reaction time was 40 min, the concentration of hexavalent chromium was 1 mg / L, Fe / C = 7/3 and the total amount was 14 g Iron-carbon, repeated treatment of 100m L of chromium liquid can be used 6 to 8 times, water samples treated by the conditions of the removal rate of 95% or more, the effect is good. On this basis, dynamic continuous experiments were carried out with a flow rate of 8 m L / min and a concentration of 1 mg / L of chromium. Without adjustment of p H, distilled water with chromium was allowed to run for 60 days with an effluent concentration of 0.007 to 0.012 mg / L , The treatment rate of more than 95%, effluent to meet the “drinking water health standards” (GB 5749-2006) hexavalent chromium requirements of 0.05 mg / L, the total iron requirement of 0.3 mg / L. Based on the laboratory experiments, the technology has achieved good treatment effect and is of reference value for the research of new technology of water source water treatment.