饮用水源突发性铬污染去除方法的比较研究  

Comparative study on elimination methods for unexpected chromium pollution in drinking water sources

作　　者：陶光华[1] 陆少鸣[1] 王健[1] 

机构地区：[1]华南理工大学环境科学与工程学院,广州510006

出　　处：《环境工程学报》2010年第1期133-136,共4页Chinese Journal of Environmental Engineering

基　　金：广州市自来水公司科技攻关项目

摘　　要：通过对水源水中铬污染的不同去除方法的比较实验及验证实验,研究pH值、FeSO_4、NaHSO_3和活性炭的投加量对铬的去除效果的影响。实验结果表明,当原水中铬的含量为0.5 mg/L时,未调节pH值的条件下,亚硫酸氢钠与活性炭对铬的最高去除率为50%左右;硫酸亚铁还原沉淀在FeSO_4·7H_2O:Cr^(6+)投加比=16:1时,滤后出水中Cr^(6+)的去除率达到96.8%,中试出水中未检出Cr^(6+),出水的总Cr、总Fe等指标完全达到《生活饮用水卫生标准》(GB 5749-2006)的要求。Through the lab and pilot-scale experiments of different measures on the removal of chromium in dringking water sources,the effects of pH value, oxidant of FeSO4, NaHSO2 and active carbon on the chromium removal were studied. The results showed that, when the mass concentration of chromium in raw water was 0.5 mg/L, the removal rate of chromium with NaHSO3 and active carbon was 50% ; the removal rate of chromium was 96.8% in lab experiment and 100% by the process of pilot-scale when the ratio of FeSO4 · 7H2O to Cr^6＋ was 16： 1, and the concentration of total chromium, total iron satisfied the requirement of Hygienic Standard for Drinking Water（GB 5749-2006）.

关 键 词：饮用水源 铬 硫酸亚铁 亚硫酸氢钠 活性炭 

分 类 号：TU991.27[建筑科学—市政工程]