The degradation of DDTC in beneficiation wastewater has become an increasingly concerned issue due to the serious effects on the environment. In this study, the degradation characteristics of DDTC in artificially prepared beneficiation wastewater were investigated by adding sodium hypochlorite as an oxidant, and the influences of different degradation conditions on removal efficiency of DDTC were analyzed systematically. The results indicated that the degradation rate of DDTC without sodium hypochlorite added can reach 88.4% in a stewing time of 6 h. When the dosage of sodium hypochlorite was 400 mg·L−1, the degradation rate of DDTC can reach 91.28% for 1 min reaction time under the natural condition of pH value 5.98 and reaction temperature 25°C. The DDTC in the wastewater was firstly degraded into carbon disulfide and diethylamine, and then carbon disulfide was further degraded into CO2, S, or SO42−, while diethylamine was degraded into N2 and CO2. The research results can provide a technical basis for the treatment of beneficiation wastewater containing DDTC.

中文翻译：

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次氯酸钠对人工制备选矿废水中二乙基二硫代氨基甲酸钠（DDTC）的降解研究

由于对环境的严重影响，选矿废水中DDTC的降解已成为越来越受关注的问题。本研究以次氯酸钠为氧化剂,研究了人工制备的选矿废水中DDTC的降解特性,系统分析了不同降解条件对DDTC去除效率的影响。结果表明，不添加次氯酸钠的DDTC在6 h的炖煮时间内降解率可达88.4%。当次氯酸钠用量为400 mg·L-1时，在pH值为5.98、反应温度为25℃的自然条件下，1 min反应时间对DDTC的降解率可达91.28%。废水中的DDTC首先被降解为二硫化碳和二乙胺，然后二硫化碳进一步降解为CO2、S或SO42-，而二乙胺则降解为N2和CO2。研究结果可为处理含DDTC的选矿废水提供技术依据。