高级氧化技术处理选矿废水中黄药的研究进展

发布时间：2018-05-10 16:47

本文选题：高级氧化技术 + 黄药　；参考：《金属矿山》2017年12期

【摘要】：黄药是硫化矿浮选的常用、有效、廉价捕收剂,具有刺激性气味和毒性,在废水中难以自然降解,是很多选矿厂的主要污染物。传统的处理方法酸化分解法、自然曝晒法、化学沉淀法、吸附法等存在处理周期长、产生二次污染、难以达到深度处理效果等不足而难以推广应用,而高级氧化技术因具有有机污染物氧化效率高、污染物处理效果好、不产生二次污染等优点而备受关注。其中,臭氧催化氧化技术能有效去除选矿废水中的黄药,满足出水排放标准,但如何提高O3利用效率及开发高效低能耗的臭氧发生装置和反应器需要进一步研究;Fenton法处理技术具有氧化速率高、操作简单、无需复杂设备等优点,但Fenton法对双氧水利用率低,且催化剂的稳定性和寿命有待加强;光催化氧化技术具有操作简单方便,适用范围广,反应条件温和,无二次污染等优点,但催化剂对光能利用效率低,且光催化反应装置复杂。目前影响高级氧化技术大规模应用的根本原因是处理成本较高。因此,解决高级氧化技术的应用问题,应积极开展新型、高效、廉价催化剂和反应器的研发,以及各种高级氧化技术的优化组合及其与传统生化处理技术的联用研究,从而实现含黄药选矿废水的低成本、高效处理。
[Abstract]:Xanthate is a common, effective and cheap collector for sulphide flotation, which has irritating odor and toxicity and is difficult to degrade naturally in waste water. Xanthate is the main pollutant in many concentrators. The traditional treatment methods, such as acidizing decomposition method, natural exposure method, chemical precipitation method, adsorption method and so on, have some disadvantages such as long treatment period, secondary pollution, difficult to achieve advanced treatment effect, and difficult to be popularized and applied. However, advanced oxidation technology has attracted much attention because of its advantages of high efficiency of organic pollutants oxidation, good effect of pollutant treatment and no secondary pollution. Among them, ozone catalytic oxidation technology can effectively remove xanthate from mineral processing wastewater and meet the effluent discharge standard. However, how to improve the efficiency of ozone utilization and to develop high efficiency and low energy consumption ozone generating units and reactors need to be further studied. Fenton process has the advantages of high oxidation rate, simple operation and no complex equipment. However, the utilization rate of hydrogen peroxide by Fenton method is low. The stability and lifetime of the catalyst need to be strengthened, the photocatalytic oxidation technology has the advantages of simple operation, wide application range, mild reaction conditions, no secondary pollution and so on, but the utilization efficiency of light energy of the catalyst is low. And the photocatalytic reaction device is complex. At present, the basic reason that affects the large-scale application of advanced oxidation technology is the high cost of treatment. Therefore, to solve the problem of the application of advanced oxidation technology, we should actively develop new, efficient, inexpensive catalysts and reactors, and optimize the combination of various advanced oxidation technologies and their combination with traditional biochemical treatment technologies. Therefore, the low cost and high efficiency treatment of the wastewater containing xanthate can be realized.
【作者单位】：广西农业科学院农产品质量安全与检测技术研究所;广西大学化学化工学院;中钢集团马鞍山矿山研究院有限公司;
【基金】：国家自然科学基金项目(编号:21667004) 广西自然科学基金项目(编号:2015GXNSFCA139017)
【分类号】：X751

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