改性粉煤灰在处理锑矿选矿废水中的应用
Treatment of wastewater released from antimony ore processing using acidified coal fly ash
查看参考文献27篇
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文摘
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针对锑矿选矿废水中锑和丁基黄原酸钠严重超标的问题,用酸改性粉煤灰对其进行吸附处理,试验结果表明,当改性粉煤灰处理选矿废水的最佳质量体积比(g·mL~(-1))为1:100,pH值为3.静置时间为4h时,可以将选矿废水中的锑浓度从28.611mg·L~(-1)降到0.05 mg·L~(-1)以下,去除率达99.8%以上;废水中的丁基黄原酸钠浓度可从0.373 mg·L~(-1)降到0.02 mg·L~(-1)以下,去除率达95.0%以上.处理废水后的改性粉煤灰用硫酸-硝酸浸提,浸出液中重金属离子浓度均低于国家浸出毒性标准,表明改性粉煤灰是一种很好的锑矿选矿废水处理剂, |
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其他语种文摘
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The removal of antimony and sodium butyl xanthate from antimony ore wastewater using acidified coal fly ash were investigated under various conditions of dosage, pH and standing time. The results demonstrated that at a dosage of 1 : 100 and pH 3, the concentration of antimony decreased from 28.611 mg·L~(-1) to 0.05 mg·L~(-1) (up to 99.8%) and the concentration of sodium butyl xanthate decreased from 0. 373 mg·L~(-1) to 0.02 mg·L~(-1) (up to 95.0%) over a 4 h period. After use, the acidified coal fly ash was leached with sulphuric and nitric acids and the contents of heavy metals detected in the leaching liquid were below the national standard, indicating a low toxicity of the solid fly ash waste. This result indicates that acidified coal fly ash can be useful as an absorbent to treat wastewater from antimony ore processing. |
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来源
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环境科学学报
,2010,30(2):361-367 【核心库】
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关键词
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改性粉煤灰
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选矿废水
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锑
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丁基黄原酸钠
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浸出毒性
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地址
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1.
中国科学院地球化学研究所, 环境地球化学国家重点实验室, 贵州, 贵阳, 550002
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中国环境科学研究院, 国家环境保护湖泊污染控制重点实验室, 北京, 100012
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0253-2468 |
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学科
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行业污染、废物处理与综合利用 |
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基金
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中国科学院知识创新工程重要方向项目
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国家自然科学基金
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文献收藏号
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CSCD:3875042
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