• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Treatment of dinitrodiazophenol industrial wastewater in heat-activated persulfate system
【24h】

Treatment of dinitrodiazophenol industrial wastewater in heat-activated persulfate system

机译：热活性过硫酸盐系统中二硝基噻吩醇产业废水的处理

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Heat-activated persulfate oxidation process was investigated as the treatment of dinitrodiazophenol industrial wastewater to degrade refractory pollutants and improve biodegradability. By studying the effects of 4 factors and carrying out orthogonal tests and scale-up experiments, optimal treatment conditions (temperature 90 degrees C, reaction time 75 min, PS dosage 20.0 g L-1 and initial pH approximate to 2.0) were obtained. The results showed that under these conditions, COD and color removal efficiencies were 99.22% and 99.99%, respectively. Moreover, an increase in BOD5/COD ratio (from 0 to 0.31) indicates significantly improved biodegradability. Dinitrodiazophenol dosage was measured by high performance liquid chromatography, which showed that dinitrodiazophenol removal efficiency reached 99.99%. Furthermore, the degradation process was analyzed by ultraviolet-visible spectra and Fourier transform infrared spectra. The former demonstrated that aromatic compounds in the system were destroyed during mineralization and the latter indicated that nitro groups on the benzene ring could be oxidized to nitrate. After verification test of the free radicals, mechanism of heat-activated persulfate system was assumed to be that SO4- and OH function together and SO4- predominate. To conclude, the heat-activated PS oxidation technology performs effectively in treatment of DDNP wastewater and expands applications of sulfate-radical-based advanced oxidation technology in industrial-wastewater treatment.
机译：研究了热活化的过硫酸盐氧化方法作为二硝基二唑工业废水的处理，降解耐火污染物并提高生物降解性。通过研究4因素的影响和进行正交试验和扩大实验，得到最佳处理条件（温度90℃，反应时间75分钟，PS剂量20.0g L-1和初始pH近似为2.0）。结果表明，在这些条件下，COD和颜色去除效率分别为99.22％和99.99％。此外，BOD5 / COD比率的增加（0至0.31）表示显着提高的生物降解性。通过高效液相色谱法测量二硝基二噻吩醇剂量，表明二硝基二苯酚去除效率达到99.99％。此外，通过紫外 - 可见光谱和傅里叶变换红外光谱分析了降解过程。前者证明了在矿化过程中破坏了系统中的芳族化合物，后者表明苯环上的硝基可以氧化成硝酸盐。在自由基的验证试验后，假设热活化过硫酸盐系统的机制是将SO4-和OH函数一起且SO4-占主导地位。为了得出结论，热活化的PS氧化技术在治疗DDNP废水中进行了有效地进行，并扩大了硫酸盐 - 自由基高氧化技术在工业废水处理中的应用。

著录项

  • 来源
    《RSC Advances》 |2018年第37期|共9页
  • 作者

    Wei Le-lan; Chen Wei-ming; Li Qi-bin; Gu Zhe-pei; Zhang Ai-ping;

  • 作者单位

    Sichuan Normal Univ Coll Chem &

    Mat Sci Key Lab Special Wastewater Treatment Coll Sichuan Chengdu 610068 Sichuan Peoples R China;

    Southwest Jiaotong Univ Geosci &

    Environm Engn Chengdu 611756 Sichuan Peoples R China;

    Southwest Jiaotong Univ Geosci &

    Environm Engn Chengdu 611756 Sichuan Peoples R China;

    Sichuan Normal Univ Coll Chem &

    Mat Sci Key Lab Special Wastewater Treatment Coll Sichuan Chengdu 610068 Sichuan Peoples R China;

    Sichuan Normal Univ Coll Chem &

    Mat Sci Key Lab Special Wastewater Treatment Coll Sichuan Chengdu 610068 Sichuan Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号