| 硫酸根和硝酸根对ZVI-SRB处理铀废水的影响研究 |
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| 引用本文： | 胡凯光,汪爱河,陶干强,李锦鹏,丁德馨.硫酸根和硝酸根对ZVI-SRB处理铀废水的影响研究[J].矿业工程研究,2010,25(3). |
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| 作者姓名： | 胡凯光 汪爱河 陶干强 李锦鹏 丁德馨 |
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| 作者单位： | 1. 南华大学,铀矿冶生物技术国防重点学科实验室,湖南,衡阳,421001
2. 湖南城市学院,城市建设系,湖南,益阳,413000 |
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| 基金项目： | 国家自然科学基金资助项目，湖南省教育厅重点资助项目 |
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| 摘 要： | 利用硫酸盐还原菌(SRB)和还原性铁粉(Zero Valent Iron,ZVI)还原沉淀废液中的铀,研究了硫酸根和硝酸根对SRB体系和ZVI-SRB体系还原沉淀废液中的铀的影响.试验结果表明,这2个酸根离子对SRB体系和ZVI-SRB体系处理铀废水有一定的影响.硫酸根的质量浓度低于4000mg/L对硫酸盐还原菌还原沉淀铀没有影响,但当硫酸根的质量浓度超过6000mg/L时,铀的去除率会显著下降,从80%以上降到14.1%;有硫酸根时,铀的最终除去率ZVI-SRB联合处理比SRB单独处理要高.低浓度的硝酸根有助于SRB的还原代谢,高浓度的硝酸根抑制SRB的生长代谢,进而影响铀废水的处理效率,当硝酸根的质量浓度达到1500mg/L,铀的去除率不到0.1%,而硝酸根的质量浓度低于1000mg/L,铀的去除率可达75%以上;有硝酸根时,加铁粉的SRB的铀除去率比没加铁粉的去除率都要低.
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| 关 键 词： | 硫酸根 硝酸根 硫酸盐还原菌 还原性铁粉 铀废水 |
Influence of sulfate radical and nitrate radical on microbial reduction of uranium wastewater by ZVI-SRB |
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| HU Kaiguang,WANG Aihe,TAO Ganqiang,LI Jingpeng,DING Dexin.Influence of sulfate radical and nitrate radical on microbial reduction of uranium wastewater by ZVI-SRB[J].Mineral Engineeering Reseach,2010,25(3). |
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| Authors: | HU Kaiguang WANG Aihe TAO Ganqiang LI Jingpeng DING Dexin |
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| Affiliation: | HU Kaiguang1,WANG Aihe2,TAO Ganqiang1,LI Jingpeng1,DING Dexin1 (1.Key Discipline Laboratory for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy,University of South China,Hengyang 421001,China,2.Department of Urban Construction,Hunan City College,Yiyang 410604,China) |
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| Abstract: | Microbial reduction technology by Sulfate reducing bacteria and Zero Valent Iron were employed to treat uranium wastewater. The experiments were conducted to evaluate the influence of anion (sulfate and nitrate) on dealing with uranium wastewater. Experimental results show that both SRB system and ZVI- SRB system processing uranium wastewater are affected by sulfate ion and nitrate ion. As the concentration of sulfate radical is lower than 4 000 mg/L, sulfate-reducing bacteria has not influenced on precipit... |
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| Keywords: | sulfate radical nitrate radical sulfate-reducing bacteria zero valent iron uranium wastewater |
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