纳米级零价铁处理含铀废水初步实验研究  

Study on the treatment of U(Ⅵ)-bearing wastewater by nano zero-valent iron

作　　者：万小岗[1] 杨胜亚[1] 

机构地区：[1]中国工程物理研究院,四川绵阳621900

出　　处：《工业水处理》2012年第3期42-44,共3页Industrial Water Treatment

摘　　要：研究了纳米级零价铁对废水中铀(Ⅵ)的去除效果,考察了纳米级零价铁投加量、pH及竞争离子等因素对处理效果的影响。结果表明,当模拟含铀(Ⅵ)废水的pH=5时,铀去除率达到99%。常见的阳离子对铀去除率没有明显影响,但二价阴离子SO42-、CO32-对铀去除率的影响显著。在相同条件下,纳米铁对铀(Ⅵ)的去除效果明显优于普通铁粉,还原速率比普通铁粉提高了15倍。The removing effectiveness of U （ Ⅵ ） in U （ Ⅵ）-bearing wastewater by nano zero-valent iron has been studied. The effects of the dosage of nano zero-valent iron, pH and competitive ions on treatment effiency are investi- gated. The results indicate that the U （ Ⅵ ） removing rate is 99%, when the pH of simulated U （ Ⅵ ）-bearing wastewater is 5. The common cations have no evident influence on U （Ⅵ ） removing rate,while bivalent anions, such as SO2-, CO32-, do. Under the same conditions, the removing efficiency of nano zero-valent iron is remarkably better than common iron powder, and the deoxidizing velocity is 15 times higher than that of common iron powder.

关 键 词：零价铁 废水处理 铀(VI) 

分 类 号：X703[环境科学与工程—环境工程]