硫酸盐还原菌和零价铁协同处理含铀废水  

Synergetic Treatment of Uranium-Bearing Wastewater With Sulfate Reducing Bacteria and Zero-Valent Iron

作　　者：周泉宇[1] 谭凯旋[1] 曾晟[1] 刘栋[1] 

机构地区：[1]南华大学核资源与安全工程学院,湖南衡阳421001

出　　处：《原子能科学技术》2009年第9期808-812,共5页Atomic Energy Science and Technology

基　　金：国家自然科学基金资助项目(10675059)

摘　　要：含铀废水的处理和利用微生物治理矿山废水的研究已受到环境工作者的高度重视。本工作通过柱实验研究了硫酸盐还原菌(SRB)和零价铁(ZVI)协同去除废水铀和硫酸盐等污染物的潜力。SRB+ZVI可有效去除铀矿山废水中的污染物U(Ⅵ)和SO42-,U(Ⅵ)的去除率可达99.4%,硫酸根去除率为86.2%,废水的pH可达近中性。U(Ⅵ)和硫酸根均作为硫酸盐还原菌的电子受体而通过生物还原去除。ZVI的腐蚀有利于提高废水pH和形成厌氧还原性环境,加强了SRB的生存和代谢反应,从而对SRB去除废水中U(Ⅵ)和SO42-起到协同增强作用。The treatment of uranium-bearing wastewater from uranium mine and using microorganism to treat wastewater were paid much attention to environmental researchers.Based on column experiments,we investigated the potential using sulfate reducing bacteria（SRB） and zero-valent iron（ZVI） to synergetic treat contamination in wastewater such as sulfate,uranium,etc.SRB＋ZVI can effectively remove contamination U（Ⅵ） and SO2-4 in wastewater.The removal rate is 99.4% and 86.2% for U（Ⅵ） and SO2-4,respectively.The pH of wastewater can be basified to neutral.U（Ⅵ） and SO2-4 as electron acceptor of sulfate reducing bacteria are removed by biological reduction.The corrosion of ZVI is benefit to enhance the pH of wastewater,forms anaerobic reducing environment,strengthens survival and metabolism reaction of SRB,and plays a synergetic enhancement.

关 键 词：硫酸盐还原菌 零价铁 含铀废水处理 柱实验 

分 类 号：TL942[核科学技术—辐射防护及环境保护]