YANGEn-zhe,YANGTao,YANGFang-wen,et al.Design and Operation of WWTP for Preparing Hydrogen Peroxide by Anthraquinone Method[J].China Water & Wastewater,2022,38(4):98-102.
Design and Operation of WWTP for Preparing Hydrogen Peroxide by Anthraquinone Method
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第4期
Page:
98-102
Column:
Date of publication:
2022-02-17
- Keywords:
- wastewater treatment; hydrogen peroxide; Fenton oxidation method; biological aerated filter
- Abstract:
- The industrial production of hydrogen peroxide as an important chemical product by anthraquinone process produces wastewater containing heavy aromatics, trioctyl phosphate, 2-ethylanthraquinone and other organic pollutants. In view of the characteristics such as high organic concentration, complicated ingredients and non?biodegradable of the hydrogen peroxide production wastewater, a combined process of gravity oil separation, coagulation and air flotation, Fenton oxidation, coagulation and sedimentation, and biological aerated filter is developed to treat the wastewater. The main process, design parameters of the core units and economic analysis are elaborated for a practical project scale of 600 m3/d. The influent wastewater was acidic (pH=5-6), and the average value of COD was 4 000 mg/L. Based on the operation results in recent 3 years, the actual removal efficiency of COD was over 90%, and the effluent could meet the requirements of the first level in Integrated Wastewater Discharge Standard (GB 8978-1996). It is proved that the hydrogen peroxide production wastewater can be efficiently treated by the combined process of Fenton oxidation and biological aerated filter as core units.
Last Update:
2022-02-17