Xanthate is the common,effective and cheap collector in the flotation of metal sulfide minerals. It has irritating odor and toxicity,and exists difficulty in natural degradation in wastewater,so it is the main pollutant in many concentrator. The traditional treatment method i. e. acidification decomposition method,natural exposure method,chemical precipitation method and adsorption method have long processing cycle and secondary pollution,which are difficult to achieve the advanced treat-ment and application. Advanced oxidation technology has attracted much attention due to the high efficiency of organic pollutant oxidation,good effect of pollutant treatment,and no secondary pollution. There,Ozone catalytic oxidation technology can effec-tively remove the xanthate in mineral processing wastewater to meet the effluent discharge standards. How to improve the utili-zation of O3 and develop high-efficiency and low-energy ozone generator and reactor need further study. Fenton method has the advantages of high oxidation rate,simple operation and no complicated equipment. However,the Fenton method has low utiliza-tion rate of hydrogen peroxide and the stability and life of the catalyst need to be strengthened. Photocatalytic oxidation technol-ogy has the advantages of simple operation,wide application range,mild reaction condition and no secondary pollution,but the catalyst has low utilization rate of light energy and complicated photocatalytic reaction device. The fundamental reason to limit the large-scale application of advanced oxidation technology is that the high processing cost. In order to overcome the problems in the application of the advanced oxidation technology and achieve low-cost and efficient treatment of mineral processing wastewater containing xanthate,further investigation on the new-type,efficient,cheap catalyst and reactor,as well as a variety of combination of the advanced oxidation technology and its combination with traditional biochemical treatment technology need be carried out.%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.
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