Residual flotation reagents in beneficiation wastewater will have important impact on environment and human life. And thus,how to degrade flotation reagents effectively has drawn extensive attraction of researchers. The degradation char-acteristics of sodium diethyldithiocarbamate in solution were investigated in this paper. The results indicated that,increase of temperature and reaction time were beneficial to sodium diethyldithiocarbamate degradation,and the degradation rate of sodium diethyldithiocarbamate in acidic was much higher than that in neutral and alkaline conditions. The addition of oxidant could ef-fectively improve the degradation rate of sodium diethyldithiocarbamate. When the solution pH was 5. 98,reaction temperature was 25 ℃ and reaction time was 5. 5 h,the degradation rate of sodium diethyldithiocarbamate will reach to 88. 40%. Degrada-tion of sodium diethyldithiocarbamate will be enhanced with the addition of H2 O2 . With the increase of H2 O2 dosage,degrada-tion of sodium diethyldithiocarbamate increased sharply at first and then kept stable. When the dosage of H2O2 is 8. 00×102 mg/L and reaction time was 5 min,the maximum degradation rate of diethyldithiocarbamate was obtained,which was 99. 69%. The results could provide useful reference for the processing of sodium diethyldithiocarbamate contamination wastewater.%选矿废水中残留的选矿药剂会对环境及人类生活产生重要影响，因此，如何实现选矿药剂的有效降解逐渐被选矿工作者重视，为此考察了乙硫氮在水体中的降解特性。结果表明：升高温度、延长静置时间、降低溶液pH均有利于乙硫氮的降解；在反应温度为25℃、反应溶液pH为5．98、静置5．5 h时，乙硫氮降解率可达88．40%；添加H2O2可显著提高乙硫氮的降解率，缩短降解时间；在反应温度为25℃、反应溶液pH为5．98、H2O2用量为8．00×102 mg/L、静置时间为5 min时，乙硫氮的降解率可达99．69%。研究结果可以为含乙硫氮选矿废水的处理提供技术依据。
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