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Dinitrodiazophenol industrial wastewater treatment by a sequential ozone Fenton process

  • Zhepei Gu
  • Xuqin Pan
  • Shengpeng Guo
  • Aiping ZhangEmail author
Short Research and Discussion Article
  • 29 Downloads

Abstract

The ozonation process is efficient in degrading aromatic substances and substances with unsaturated bonds, but cannot effectively destroy small-molecule organic compounds, which accumulate. Likewise, the Fenton process is a classic wastewater treatment method, but requires strict pH control and produces secondary pollution when the concentration of organic substances is high. In this study, we applied a 1stO3-2ndFenton sequential process to treat diazodinitrophenol (DDNP) industrial wastewater and provide suitable reaction conditions for Fenton process. For the 1stOzone process, organics removal increased as O3 dosage increased. At optimized operation, the 1stO3 process provided an acidic effluent (pH = 3) and reduced the organics concentration to a level suitable for the 2ndFenton process. Benzene ring substances as well as nitro group and diazo group compounds were greatly degraded in the 1stO3 process and were further mineralized in the 2ndFenton process. Additionally, the biodegradability of DDNP industrial wastewater was greatly improved. This is the first reported time that ozonation and the Fenton process have been integrated sequentially to treat an explosive production wastewater. The study provides a feasible chemical oxidation method for treating DDNP industrial wastewater by simply combining two classic treatment processes.

Keywords

Ozone Fenton DDNP Sequential process Wastewater treatment 

Notes

Funding information

The authors are grateful for the support from China’s National Students’ Platform for Innovation and Entrepreneurship Training Program (201810636068).

Supplementary material

11356_2019_6469_MOESM1_ESM.docx (35 kb)
ESM 1 (DOCX 34 kb)

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Zhepei Gu
    • 1
  • Xuqin Pan
    • 2
  • Shengpeng Guo
    • 2
  • Aiping Zhang
    • 1
    Email author
  1. 1.College of Chemistry and Materials ScienceSichuan Normal UniversityChengduChina
  2. 2.Faculty of Geosciences and Environmental EngineeringSouthwest Jiaotong UniversityChengduChina

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